Added ESC key handling

29 files changed, 784 insertions, 412 deletions

diff --git a/progs/redbook/accanti.c b/progs/redbook/accanti.c
index d45cf9e64e..12ca16f7a5 100644
--- a/progs/redbook/accanti.c
+++ b/progs/redbook/accanti.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -57,7 +57,7 @@ void myinit(void)
     glMaterialf(GL_FRONT, GL_SHININESS, 50.0);
     glLightfv(GL_LIGHT0, GL_POSITION, light_position);
     glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lm_ambient);
-    
+
     glEnable(GL_LIGHTING);
     glEnable(GL_LIGHT0);
     glDepthFunc(GL_LESS);
@@ -68,25 +68,25 @@ void myinit(void)
     glClearAccum(0.0, 0.0, 0.0, 0.0);
 }
 
-void displayObjects(void) 
+void displayObjects(void)
 {
     GLfloat torus_diffuse[] = { 0.7, 0.7, 0.0, 1.0 };
     GLfloat cube_diffuse[] = { 0.0, 0.7, 0.7, 1.0 };
     GLfloat sphere_diffuse[] = { 0.7, 0.0, 0.7, 1.0 };
     GLfloat octa_diffuse[] = { 0.7, 0.4, 0.4, 1.0 };
-    
+
     glPushMatrix ();
     glRotatef (30.0, 1.0, 0.0, 0.0);
 
     glPushMatrix ();
-    glTranslatef (-0.80, 0.35, 0.0); 
+    glTranslatef (-0.80, 0.35, 0.0);
     glRotatef (100.0, 1.0, 0.0, 0.0);
     glMaterialfv(GL_FRONT, GL_DIFFUSE, torus_diffuse);
     glutSolidTorus (0.275, 0.85, 16, 16);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (-0.75, -0.50, 0.0); 
+    glTranslatef (-0.75, -0.50, 0.0);
     glRotatef (45.0, 0.0, 0.0, 1.0);
     glRotatef (45.0, 1.0, 0.0, 0.0);
     glMaterialfv(GL_FRONT, GL_DIFFUSE, cube_diffuse);
@@ -94,14 +94,14 @@ void displayObjects(void)
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (0.75, 0.60, 0.0); 
+    glTranslatef (0.75, 0.60, 0.0);
     glRotatef (30.0, 1.0, 0.0, 0.0);
     glMaterialfv(GL_FRONT, GL_DIFFUSE, sphere_diffuse);
     glutSolidSphere (1.0, 16, 16);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (0.70, -0.90, 0.25); 
+    glTranslatef (0.70, -0.90, 0.25);
     glMaterialfv(GL_FRONT, GL_DIFFUSE, octa_diffuse);
     glutSolidOctahedron ();
     glPopMatrix ();
@@ -124,7 +124,7 @@ void display(void)
 	glPushMatrix ();
 /*	Note that 4.5 is the distance in world space between
  *	left and right and bottom and top.
- *	This formula converts fractional pixel movement to 
+ *	This formula converts fractional pixel movement to
  *	world coordinates.
  */
 	glTranslatef (j8[jitter].x*4.5/viewport[2],
@@ -142,15 +142,28 @@ void myReshape(int w, int h)
     glViewport(0, 0, w, h);
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
-    if (w <= h) 
+    if (w <= h)
 	glOrtho (-2.25, 2.25, -2.25*h/w, 2.25*h/w, -10.0, 10.0);
-    else 
+    else
 	glOrtho (-2.25*w/h, 2.25*w/h, -2.25, 2.25, -10.0, 10.0);
     glMatrixMode(GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -163,6 +176,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/anti.c b/progs/redbook/anti.c
index 12aa5f8a21..9eab0bc351 100644
--- a/progs/redbook/anti.c
+++ b/progs/redbook/anti.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -45,8 +45,8 @@
 #include <stdio.h>
 #include <GL/glut.h>
 
-/*  Initialize antialiasing for RGBA mode, including alpha 
- *  blending, hint, and line width.  Print out implementation 
+/*  Initialize antialiasing for RGBA mode, including alpha
+ *  blending, hint, and line width.  Print out implementation
  *  specific info on line width granularity and width.
  */
 void myinit(void)
@@ -56,7 +56,7 @@ void myinit(void)
     printf ("GL_LINE_WIDTH_GRANULARITY value is %3.1f\n", values[0]);
 
     glGetFloatv (GL_LINE_WIDTH_RANGE, values);
-    printf ("GL_LINE_WIDTH_RANGE values are %3.1f %3.1f\n", 
+    printf ("GL_LINE_WIDTH_RANGE values are %3.1f %3.1f\n",
 	values[0], values[1]);
 
     glEnable (GL_LINE_SMOOTH);
@@ -93,8 +93,21 @@ void myReshape(int w, int h)
     glTranslatef (0.0, 0.0, -4.0);  /*  move object into view   */
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -105,7 +118,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
-
diff --git a/progs/redbook/bezmesh.c b/progs/redbook/bezmesh.c
index eb7f0f7a84..55e7e827f2 100644
--- a/progs/redbook/bezmesh.c
+++ b/progs/redbook/bezmesh.c
@@ -3,14 +3,14 @@
 
 /**
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -68,7 +68,7 @@ GLfloat ctrlpoints[4][4][3] =
         {1.5, 1.5, -1.0}}
 };
 
-void 
+void
 initlights(void)
 {
     GLfloat ambient[] =
@@ -93,7 +93,7 @@ initlights(void)
     glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
 }
 
-void 
+void
 display(void)
 {
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -104,7 +104,7 @@ display(void)
     glFlush();
 }
 
-void 
+void
 myinit(void)
 {
     glClearColor(0.0, 0.0, 0.0, 1.0);
@@ -118,7 +118,7 @@ myinit(void)
     initlights();       /* for lighted version only */
 }
 
-void 
+void
 myReshape(int w, int h)
 {
     glViewport(0, 0, w, h);
@@ -134,7 +134,20 @@ myReshape(int w, int h)
     glLoadIdentity();
 }
 
-int 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
+int
 main(int argc, char **argv)
 {
     glutInit(&argc, argv);
@@ -143,6 +156,7 @@ main(int argc, char **argv)
     myinit();
     glutReshapeFunc(myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/checker.c b/progs/redbook/checker.c
index 34853b0c6e..4b7695237f 100644
--- a/progs/redbook/checker.c
+++ b/progs/redbook/checker.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -52,10 +52,10 @@ GLubyte checkImage[checkImageWidth][checkImageHeight][3];
 void makeCheckImage(void)
 {
     int i, j, c;
-    
+
     for (i = 0; i < checkImageWidth; i++) {
 	for (j = 0; j < checkImageHeight; j++) {
-	    c = ((((i&0x8)==0)^((j&0x8))==0))*255;
+	    c = ((((i&0x8)==0)^((j&0x8)==0)))*255;
 	    checkImage[i][j][0] = (GLubyte) c;
 	    checkImage[i][j][1] = (GLubyte) c;
 	    checkImage[i][j][2] = (GLubyte) c;
@@ -64,15 +64,15 @@ void makeCheckImage(void)
 }
 
 void myinit(void)
-{    
+{
     glClearColor (0.0, 0.0, 0.0, 0.0);
     glEnable(GL_DEPTH_TEST);
     glDepthFunc(GL_LESS);
 
     makeCheckImage();
     glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-    glTexImage2D(GL_TEXTURE_2D, 0, 3, checkImageWidth, 
-	checkImageHeight, 0, GL_RGB, GL_UNSIGNED_BYTE, 
+    glTexImage2D(GL_TEXTURE_2D, 0, 3, checkImageWidth,
+	checkImageHeight, 0, GL_RGB, GL_UNSIGNED_BYTE,
 	&checkImage[0][0][0]);
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
@@ -111,6 +111,19 @@ void myReshape(int w, int h)
     glTranslatef(0.0, 0.0, -3.6);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 int
 main(int argc, char** argv)
 {
@@ -120,6 +133,7 @@ main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/depthcue.c b/progs/redbook/depthcue.c
index 41af19cf96..a3e5b743aa 100644
--- a/progs/redbook/depthcue.c
+++ b/progs/redbook/depthcue.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -39,7 +39,7 @@
  */
 /*
  *  depthcue.c
- *  This program draws a wireframe model, which uses 
+ *  This program draws a wireframe model, which uses
  *  intensity (brightness) to give clues to distance.
  *  Fog is used to achieve this effect.
  */
@@ -86,6 +86,19 @@ void myReshape(int w, int h)
     glTranslatef (0.0, 0.0, -4.0);  /*  move object into view   */
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
  */
 int main(int argc, char** argv)
@@ -96,7 +109,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc(myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
-
diff --git a/progs/redbook/dof.c b/progs/redbook/dof.c
index 166ca9e62f..6673dc2d54 100644
--- a/progs/redbook/dof.c
+++ b/progs/redbook/dof.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -55,35 +55,35 @@
 
 /*	accFrustum()
  *  The first 6 arguments are identical to the glFrustum() call.
- *  
- *  pixdx and pixdy are anti-alias jitter in pixels. 
+ *
+ *  pixdx and pixdy are anti-alias jitter in pixels.
  *  Set both equal to 0.0 for no anti-alias jitter.
- *  eyedx and eyedy are depth-of field jitter in pixels. 
+ *  eyedx and eyedy are depth-of field jitter in pixels.
  *  Set both equal to 0.0 for no depth of field effects.
  *
- *  focus is distance from eye to plane in focus. 
+ *  focus is distance from eye to plane in focus.
  *  focus must be greater than, but not equal to 0.0.
  *
- *  Note that accFrustum() calls glTranslatef().  You will 
- *  probably want to insure that your ModelView matrix has been 
+ *  Note that accFrustum() calls glTranslatef().  You will
+ *  probably want to insure that your ModelView matrix has been
  *  initialized to identity before calling accFrustum().
  */
-void accFrustum(GLdouble left, GLdouble right, GLdouble bottom, 
-    GLdouble top, GLdouble nnear, GLdouble ffar, GLdouble pixdx, 
+void accFrustum(GLdouble left, GLdouble right, GLdouble bottom,
+    GLdouble top, GLdouble nnear, GLdouble ffar, GLdouble pixdx,
     GLdouble pixdy, GLdouble eyedx, GLdouble eyedy, GLdouble focus)
 {
-    GLdouble xwsize, ywsize; 
+    GLdouble xwsize, ywsize;
     GLdouble dx, dy;
     GLint viewport[4];
 
     glGetIntegerv (GL_VIEWPORT, viewport);
-	
+
     xwsize = right - left;
     ywsize = top - bottom;
-	
+
     dx = -(pixdx*xwsize/(GLdouble) viewport[2] + eyedx*nnear/focus);
     dy = -(pixdy*ywsize/(GLdouble) viewport[3] + eyedy*nnear/focus);
-	
+
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
     glFrustum (left + dx, right + dx, bottom + dy, top + dy, nnear, ffar);
@@ -93,20 +93,20 @@ void accFrustum(GLdouble left, GLdouble right, GLdouble bottom,
 }
 
 /*  accPerspective()
- * 
+ *
  *  The first 4 arguments are identical to the gluPerspective() call.
- *  pixdx and pixdy are anti-alias jitter in pixels. 
+ *  pixdx and pixdy are anti-alias jitter in pixels.
  *  Set both equal to 0.0 for no anti-alias jitter.
- *  eyedx and eyedy are depth-of field jitter in pixels. 
+ *  eyedx and eyedy are depth-of field jitter in pixels.
  *  Set both equal to 0.0 for no depth of field effects.
  *
- *  focus is distance from eye to plane in focus. 
+ *  focus is distance from eye to plane in focus.
  *  focus must be greater than, but not equal to 0.0.
  *
  *  Note that accPerspective() calls accFrustum().
  */
-void accPerspective(GLdouble fovy, GLdouble aspect, 
-    GLdouble nnear, GLdouble ffar, GLdouble pixdx, GLdouble pixdy, 
+void accPerspective(GLdouble fovy, GLdouble aspect,
+    GLdouble nnear, GLdouble ffar, GLdouble pixdx, GLdouble pixdy,
     GLdouble eyedx, GLdouble eyedy, GLdouble focus)
 {
     GLdouble fov2,left,right,bottom,top;
@@ -128,7 +128,7 @@ void myinit(void)
     GLfloat ambient[] = { 0.0, 0.0, 0.0, 1.0 };
     GLfloat diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
     GLfloat position[] = { 0.0, 3.0, 3.0, 0.0 };
-    
+
     GLfloat lmodel_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
     GLfloat local_view[] = { 0.0 };
 
@@ -138,7 +138,7 @@ void myinit(void)
     glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
     glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
     glLightfv(GL_LIGHT0, GL_POSITION, position);
-    
+
     glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
     glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, local_view);
 
@@ -155,18 +155,18 @@ void myinit(void)
     glClearAccum(0.0, 0.0, 0.0, 0.0);
 }
 
-void renderTeapot (GLfloat x, GLfloat y, GLfloat z, 
-    GLfloat ambr, GLfloat ambg, GLfloat ambb, 
-    GLfloat difr, GLfloat difg, GLfloat difb, 
+void renderTeapot (GLfloat x, GLfloat y, GLfloat z,
+    GLfloat ambr, GLfloat ambg, GLfloat ambb,
+    GLfloat difr, GLfloat difg, GLfloat difb,
     GLfloat specr, GLfloat specg, GLfloat specb, GLfloat shine)
 {
     float mat[4];
 
     glPushMatrix();
     glTranslatef (x, y, z);
-    mat[0] = ambr; mat[1] = ambg; mat[2] = ambb; mat[3] = 1.0;	
+    mat[0] = ambr; mat[1] = ambg; mat[2] = ambb; mat[3] = 1.0;
     glMaterialfv (GL_FRONT, GL_AMBIENT, mat);
-    mat[0] = difr; mat[1] = difg; mat[2] = difb;	
+    mat[0] = difr; mat[1] = difg; mat[2] = difb;
     glMaterialfv (GL_FRONT, GL_DIFFUSE, mat);
     mat[0] = specr; mat[1] = specg; mat[2] = specb;
     glMaterialfv (GL_FRONT, GL_SPECULAR, mat);
@@ -175,9 +175,9 @@ void renderTeapot (GLfloat x, GLfloat y, GLfloat z,
     glPopMatrix();
 }
 
-/*  display() draws 5 teapots into the accumulation buffer 
+/*  display() draws 5 teapots into the accumulation buffer
  *  several times; each time with a jittered perspective.
- *  The focal point is at z = 5.0, so the gold teapot will 
+ *  The focal point is at z = 5.0, so the gold teapot will
  *  stay in focus.  The amount of jitter is adjusted by the
  *  magnitude of the accPerspective() jitter; in this example, 0.33.
  *  In this example, the teapots are drawn 8 times.  See jitter.h
@@ -192,8 +192,8 @@ void display(void)
 
     for (jitter = 0; jitter < 8; jitter++) {
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-	accPerspective (45.0, 
-		(GLdouble) viewport[2]/(GLdouble) viewport[3], 
+	accPerspective (45.0,
+		(GLdouble) viewport[2]/(GLdouble) viewport[3],
 		1.0, 15.0, 0.0, 0.0,
 		0.33*j8[jitter].x, 0.33*j8[jitter].y, 5.0);
 /*	ruby, gold, silver, emerald, and cyan teapots	*/
@@ -203,9 +203,9 @@ void display(void)
 	    0.75164, 0.60648, 0.22648, 0.628281, 0.555802, 0.366065, 0.4);
 	renderTeapot (0.2, -0.5, -5.5, 0.19225, 0.19225, 0.19225,
 	    0.50754, 0.50754, 0.50754, 0.508273, 0.508273, 0.508273, 0.4);
-	renderTeapot (1.0, -0.5, -6.0, 0.0215, 0.1745, 0.0215, 
+	renderTeapot (1.0, -0.5, -6.0, 0.0215, 0.1745, 0.0215,
 	    0.07568, 0.61424, 0.07568, 0.633, 0.727811, 0.633, 0.6);
-	renderTeapot (1.8, -0.5, -6.5, 0.0, 0.1, 0.06, 0.0, 0.50980392, 
+	renderTeapot (1.8, -0.5, -6.5, 0.0, 0.1, 0.06, 0.0, 0.50980392,
 	    0.50980392, 0.50196078, 0.50196078, 0.50196078, .25);
 	glAccum (GL_ACCUM, 0.125);
     }
@@ -219,8 +219,21 @@ void myReshape(int w, int h)
     glViewport(0, 0, w, h);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, depth buffer, and handle input events.
  */
 int main(int argc, char** argv)
@@ -232,7 +245,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc(myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
-
diff --git a/progs/redbook/double.c b/progs/redbook/double.c
index 65dfd4b2a3..a41229d12f 100644
--- a/progs/redbook/double.c
+++ b/progs/redbook/double.c
@@ -1,13 +1,13 @@
 /*
  * Copyright (c) 1993-1997, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -21,8 +21,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -66,7 +66,7 @@ void spinDisplay(void)
    glutPostRedisplay();
 }
 
-void init(void) 
+void init(void)
 {
    glClearColor (0.0, 0.0, 0.0, 0.0);
    glShadeModel (GL_FLAT);
@@ -83,7 +83,7 @@ void reshape(int w, int h)
 }
 
 /* ARGSUSED2 */
-void mouse(int button, int state, int x, int y) 
+void mouse(int button, int state, int x, int y)
 {
    switch (button) {
       case GLUT_LEFT_BUTTON:
@@ -98,8 +98,21 @@ void mouse(int button, int state, int x, int y)
          break;
    }
 }
-   
-/* 
+
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
+/*
  *  Request double buffer display mode.
  *  Register mouse input callback functions
  */
@@ -107,13 +120,14 @@ int main(int argc, char** argv)
 {
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
-   glutInitWindowSize (250, 250); 
+   glutInitWindowSize (250, 250);
    glutInitWindowPosition (100, 100);
    glutCreateWindow (argv[0]);
    init ();
-   glutDisplayFunc(display); 
-   glutReshapeFunc(reshape); 
+   glutDisplayFunc(display);
+   glutReshapeFunc(reshape);
    glutMouseFunc(mouse);
+   glutKeyboardFunc(key);
    glutMainLoop();
    return 0;   /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/fog.c b/progs/redbook/fog.c
index 5f8a4e4e76..888ee138a4 100644
--- a/progs/redbook/fog.c
+++ b/progs/redbook/fog.c
@@ -3,14 +3,14 @@
 
 /**
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -39,11 +39,11 @@
  */
 /*
  *  fog.c
- *  This program draws 5 red teapots, each at a different 
- *  z distance from the eye, in different types of fog.  
- *  Pressing the left mouse button chooses between 3 types of 
- *  fog:  exponential, exponential squared, and linear.  
- *  In this program, there is a fixed density value, as well 
+ *  This program draws 5 red teapots, each at a different
+ *  z distance from the eye, in different types of fog.
+ *  Pressing the left mouse button chooses between 3 types of
+ *  fog:  exponential, exponential squared, and linear.
+ *  In this program, there is a fixed density value, as well
  *  as fixed start and end values for the linear fog.
  */
 #include <stdlib.h>
@@ -52,7 +52,7 @@
 
 GLint fogMode;
 
-void 
+void
 selectFog(int mode)
 {
     switch(mode) {
@@ -70,10 +70,10 @@ selectFog(int mode)
     }
 }
 
-/*  Initialize z-buffer, projection matrix, light source, 
+/*  Initialize z-buffer, projection matrix, light source,
  *  and lighting model.  Do not specify a material property here.
  */
-void 
+void
 myinit(void)
 {
     GLfloat position[] =
@@ -106,7 +106,7 @@ myinit(void)
     }
 }
 
-void 
+void
 renderRedTeapot(GLfloat x, GLfloat y, GLfloat z)
 {
     float mat[4];
@@ -133,7 +133,7 @@ renderRedTeapot(GLfloat x, GLfloat y, GLfloat z)
 
 /*  display() draws 5 teapots at different z positions.
  */
-void 
+void
 display(void)
 {
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -145,7 +145,7 @@ display(void)
     glFlush();
 }
 
-void 
+void
 myReshape(int w, int h)
 {
     glViewport(0, 0, w, h);
@@ -161,11 +161,24 @@ myReshape(int w, int h)
     glLoadIdentity();
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, depth buffer, and handle input events.
  */
-int 
+int
 main(int argc, char **argv)
 {
     glutInit(&argc, argv);
@@ -181,6 +194,7 @@ main(int argc, char **argv)
     glutAddMenuEntry("Fog LINEAR", GL_LINEAR);
     glutAddMenuEntry("Quit", 0);
     glutAttachMenu(GLUT_RIGHT_BUTTON);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/fogindex.c b/progs/redbook/fogindex.c
index b409c95ac9..b8bb691e28 100644
--- a/progs/redbook/fogindex.c
+++ b/progs/redbook/fogindex.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -39,21 +39,21 @@
  */
 /*
  *  fogindex.c
- *  This program demonstrates fog in color index mode.  
- *  Three cones are drawn at different z values in a linear 
- *  fog.  32 contiguous colors (from 16 to 47) are loaded 
+ *  This program demonstrates fog in color index mode.
+ *  Three cones are drawn at different z values in a linear
+ *  fog.  32 contiguous colors (from 16 to 47) are loaded
  *  with a color ramp.
  */
 #include <stdlib.h>
 #include <GL/glut.h>
 
-/*  Initialize color map and fog.  Set screen clear color 
+/*  Initialize color map and fog.  Set screen clear color
  *  to end of color ramp.
  */
 #define NUM_COLORS 32
 #define RAMPSTART 16
 
-void 
+void
 myinit(void)
 {
   int i;
@@ -77,7 +77,7 @@ myinit(void)
 
 /*  display() renders 3 cones at different z positions.
  */
-void 
+void
 display(void)
 {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -104,7 +104,7 @@ display(void)
   glFlush();
 }
 
-void 
+void
 myReshape(int w, int h)
 {
   glViewport(0, 0, w, h);
@@ -120,11 +120,24 @@ myReshape(int w, int h)
   glLoadIdentity();
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, depth buffer, and handle input events.
  */
-int 
+int
 main(int argc, char **argv)
 {
   glutInit(&argc, argv);
@@ -133,6 +146,7 @@ main(int argc, char **argv)
   myinit();
   glutReshapeFunc(myReshape);
   glutDisplayFunc(display);
+  glutKeyboardFunc(key);
   glutMainLoop();
   return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/hello.c b/progs/redbook/hello.c
index 516c9ecc00..4f644a46a8 100644
--- a/progs/redbook/hello.c
+++ b/progs/redbook/hello.c
@@ -1,13 +1,13 @@
 /*
  * Copyright (c) 1993-1997, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -21,8 +21,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -47,7 +47,7 @@ void display(void)
    glClear (GL_COLOR_BUFFER_BIT);
 
 /* draw white polygon (rectangle) with corners at
- * (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0)  
+ * (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0)
  */
    glColor3f (1.0, 1.0, 1.0);
    glBegin(GL_POLYGON);
@@ -57,13 +57,13 @@ void display(void)
       glVertex3f (0.25, 0.75, 0.0);
    glEnd();
 
-/* don't wait!  
- * start processing buffered OpenGL routines 
+/* don't wait!
+ * start processing buffered OpenGL routines
  */
    glFlush ();
 }
 
-void init (void) 
+void init (void)
 {
 /* select clearing color 	*/
    glClearColor (0.0, 0.0, 0.0, 0.0);
@@ -74,7 +74,20 @@ void init (void)
    glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
 }
 
-/* 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
+/*
  * Declare initial window size, position, and display mode
  * (single buffer and RGBA).  Open window with "hello"
  * in its title bar.  Call initialization routines.
@@ -85,11 +98,12 @@ int main(int argc, char** argv)
 {
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
-   glutInitWindowSize (250, 250); 
+   glutInitWindowSize (250, 250);
    glutInitWindowPosition (100, 100);
    glutCreateWindow ("hello");
    init ();
-   glutDisplayFunc(display); 
+   glutDisplayFunc(display);
+   glutKeyboardFunc(key);
    glutMainLoop();
    return 0;   /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/material.c b/progs/redbook/material.c
index f8d6a918f4..f9a4fc5928 100644
--- a/progs/redbook/material.c
+++ b/progs/redbook/material.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -46,7 +46,7 @@
 #include <stdlib.h>
 #include <GL/glut.h>
 
-/*  Initialize z-buffer, projection matrix, light source, 
+/*  Initialize z-buffer, projection matrix, light source,
  *  and lighting model.  Do not specify a material property here.
  */
 void myinit(void)
@@ -72,7 +72,7 @@ void myinit(void)
     glClearColor(0.0, 0.1, 0.1, 0.0);
 }
 
-/*  Draw twelve spheres in 3 rows with 4 columns.  
+/*  Draw twelve spheres in 3 rows with 4 columns.
  *  The spheres in the first row have materials with no ambient reflection.
  *  The second row has materials with significant ambient reflection.
  *  The third row has materials with colored ambient reflection.
@@ -102,7 +102,7 @@ void display(void)
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
 /*  draw sphere in first row, first column
- *  diffuse reflection only; no ambient or specular  
+ *  diffuse reflection only; no ambient or specular
  */
     glPushMatrix();
     glTranslatef (-3.75, 3.0, 0.0);
@@ -154,7 +154,7 @@ void display(void)
     glPopMatrix();
 
 /*  draw sphere in second row, first column
- *  ambient and diffuse reflection; no specular  
+ *  ambient and diffuse reflection; no specular
  */
     glPushMatrix();
     glTranslatef (-3.75, 0.0, 0.0);
@@ -206,7 +206,7 @@ void display(void)
     glPopMatrix();
 
 /*  draw sphere in third row, first column
- *  colored ambient and diffuse reflection; no specular  
+ *  colored ambient and diffuse reflection; no specular
  */
     glPushMatrix();
     glTranslatef (-3.75, -3.0, 0.0);
@@ -266,16 +266,29 @@ void myReshape(int w, int h)
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
     if (w <= (h * 2))
-	glOrtho (-6.0, 6.0, -3.0*((GLfloat)h*2)/(GLfloat)w, 
+	glOrtho (-6.0, 6.0, -3.0*((GLfloat)h*2)/(GLfloat)w,
 	    3.0*((GLfloat)h*2)/(GLfloat)w, -10.0, 10.0);
     else
-	glOrtho (-6.0*(GLfloat)w/((GLfloat)h*2), 
+	glOrtho (-6.0*(GLfloat)w/((GLfloat)h*2),
 	    6.0*(GLfloat)w/((GLfloat)h*2), -3.0, 3.0, -10.0, 10.0);
     glMatrixMode(GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -287,7 +300,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc(myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
-
diff --git a/progs/redbook/mipmap.c b/progs/redbook/mipmap.c
index 96ef394f60..d32dd725f4 100644
--- a/progs/redbook/mipmap.c
+++ b/progs/redbook/mipmap.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -57,7 +57,7 @@ GLubyte mipmapImage1[1][1][3];
 void makeImages(void)
 {
     int i, j;
-    
+
     for (i = 0; i < 32; i++) {
 	for (j = 0; j < 32; j++) {
 	    mipmapImage32[i][j][0] = 255;
@@ -99,7 +99,7 @@ void makeImages(void)
 }
 
 void myinit(void)
-{    
+{
     glEnable(GL_DEPTH_TEST);
     glDepthFunc(GL_LESS);
     glShadeModel(GL_FLAT);
@@ -122,7 +122,7 @@ void myinit(void)
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
     glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, 
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
 	GL_NEAREST_MIPMAP_NEAREST);
     glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
     glEnable(GL_TEXTURE_2D);
@@ -150,6 +150,19 @@ void myReshape(int w, int h)
     glLoadIdentity();
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 int main(int argc, char** argv)
 {
     glutInit(&argc, argv);
@@ -159,7 +172,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
-
diff --git a/progs/redbook/nurbs.c b/progs/redbook/nurbs.c
index 513868e7d1..a7c6f0c696 100644
--- a/progs/redbook/nurbs.c
+++ b/progs/redbook/nurbs.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -46,10 +46,10 @@
 #include <GL/glut.h>
 
 #define S_NUMPOINTS 13
-#define S_ORDER     3   
+#define S_ORDER     3
 #define S_NUMKNOTS  (S_NUMPOINTS + S_ORDER)
 #define T_NUMPOINTS 3
-#define T_ORDER     3 
+#define T_ORDER     3
 #define T_NUMKNOTS  (T_NUMPOINTS + T_ORDER)
 #define SQRT2    1.41421356237309504880
 
@@ -86,7 +86,7 @@ GLfloat ctlpoints[S_NUMPOINTS][T_NUMPOINTS][4] = {
 
 GLUnurbsObj *theNurb;
 
-/*  Initialize material property, light source, lighting model, 
+/*  Initialize material property, light source, lighting model,
  *  and depth buffer.
  */
 void myinit(void)
@@ -133,12 +133,12 @@ void display(void)
     glTranslatef (-4., -4.5, -2.5);
 
     gluBeginSurface(theNurb);
-    gluNurbsSurface(theNurb, 
+    gluNurbsSurface(theNurb,
 	    S_NUMKNOTS, sknots,
 	    T_NUMKNOTS, tknots,
 	    4 * T_NUMPOINTS,
 	    4,
-	    &ctlpoints[0][0][0], 
+	    &ctlpoints[0][0][0],
 	    S_ORDER, T_ORDER,
 	    GL_MAP2_VERTEX_4);
     gluEndSurface(theNurb);
@@ -159,8 +159,21 @@ void myReshape(int w, int h)
     gluLookAt(7.0,4.5,4.0, 4.5,4.5,2.0, 6.0,-3.0,2.0);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -171,6 +184,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/pickdepth.c b/progs/redbook/pickdepth.c
index c6d50a91d9..4b95d245ce 100644
--- a/progs/redbook/pickdepth.c
+++ b/progs/redbook/pickdepth.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -39,19 +39,19 @@
  */
 /*
  *  pickdepth.c
- *  Picking is demonstrated in this program.  In 
- *  rendering mode, three overlapping rectangles are 
- *  drawn.  When the left mouse button is pressed, 
- *  selection mode is entered with the picking matrix.  
+ *  Picking is demonstrated in this program.  In
+ *  rendering mode, three overlapping rectangles are
+ *  drawn.  When the left mouse button is pressed,
+ *  selection mode is entered with the picking matrix.
  *  Rectangles which are drawn under the cursor position
- *  are "picked."  Pay special attention to the depth 
+ *  are "picked."  Pay special attention to the depth
  *  value range, which is returned.
  */
 #include <stdlib.h>
 #include <stdio.h>
 #include <GL/glut.h>
 
-void 
+void
 myinit(void)
 {
   glClearColor(0.0, 0.0, 0.0, 0.0);
@@ -61,11 +61,11 @@ myinit(void)
   glDepthRange(0.0, 1.0);  /* The default z mapping */
 }
 
-/*  The three rectangles are drawn.  In selection mode, 
- *  each rectangle is given the same name.  Note that 
+/*  The three rectangles are drawn.  In selection mode,
+ *  each rectangle is given the same name.  Note that
  *  each rectangle is drawn with a different z value.
  */
-void 
+void
 drawRects(GLenum mode)
 {
   if (mode == GL_SELECT)
@@ -97,10 +97,10 @@ drawRects(GLenum mode)
   glEnd();
 }
 
-/*  processHits() prints out the contents of the 
+/*  processHits() prints out the contents of the
  *  selection array.
  */
-void 
+void
 processHits(GLint hits, GLuint buffer[])
 {
   unsigned int i, j;
@@ -125,13 +125,13 @@ processHits(GLint hits, GLuint buffer[])
   }
 }
 
-/*  pickRects() sets up selection mode, name stack, 
- *  and projection matrix for picking.  Then the objects 
+/*  pickRects() sets up selection mode, name stack,
+ *  and projection matrix for picking.  Then the objects
  *  are drawn.
  */
 #define BUFSIZE 512
 
-void 
+void
 pickRects(int button, int state, int x, int y)
 {
   GLuint selectBuf[BUFSIZE];
@@ -164,7 +164,7 @@ pickRects(int button, int state, int x, int y)
   processHits(hits, selectBuf);
 }
 
-void 
+void
 display(void)
 {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -172,7 +172,7 @@ display(void)
   glutSwapBuffers();
 }
 
-void 
+void
 myReshape(int w, int h)
 {
   glViewport(0, 0, w, h);
@@ -183,8 +183,21 @@ myReshape(int w, int h)
   glLoadIdentity();
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, depth buffer, and handle input events.
  */
 int
@@ -198,6 +211,7 @@ main(int argc, char **argv)
   glutMouseFunc(pickRects);
   glutReshapeFunc(myReshape);
   glutDisplayFunc(display);
+  glutKeyboardFunc(key);
   glutMainLoop();
   return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/plane.c b/progs/redbook/plane.c
index 2b0cca06fa..dc17f7b238 100644
--- a/progs/redbook/plane.c
+++ b/progs/redbook/plane.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -39,7 +39,7 @@
  */
 /*
  *  plane.c
- *  This program demonstrates the use of local versus 
+ *  This program demonstrates the use of local versus
  *  infinite lighting on a flat plane.
  */
 #include <stdlib.h>
@@ -130,17 +130,30 @@ void myReshape(int w, int h)
     glViewport (0, 0, w, h);
     glMatrixMode (GL_PROJECTION);
     glLoadIdentity ();
-    if (w <= h) 
-	glOrtho (-1.5, 1.5, -1.5*(GLdouble)h/(GLdouble)w, 
+    if (w <= h)
+	glOrtho (-1.5, 1.5, -1.5*(GLdouble)h/(GLdouble)w,
 	    1.5*(GLdouble)h/(GLdouble)w, -10.0, 10.0);
-    else 
-	glOrtho (-1.5*(GLdouble)w/(GLdouble)h, 
+    else
+	glOrtho (-1.5*(GLdouble)w/(GLdouble)h,
 	    1.5*(GLdouble)w/(GLdouble)h, -1.5, 1.5, -10.0, 10.0);
     glMatrixMode (GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -152,6 +165,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/polyoff.c b/progs/redbook/polyoff.c
index 42887c9e0c..280eb165ec 100644
--- a/progs/redbook/polyoff.c
+++ b/progs/redbook/polyoff.c
@@ -1,13 +1,13 @@
 /*
  * Copyright (c) 1993-1997, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -21,8 +21,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -89,7 +89,7 @@ void display (void)
 }
 
 /*  specify initial properties
- *  create display list with sphere  
+ *  create display list with sphere
  *  initialize lighting and depth buffer
  */
 void gfxinit (void)
@@ -137,7 +137,7 @@ void mouse(int button, int state, int x, int y) {
 	case GLUT_LEFT_BUTTON:
 	    switch (state) {
 		case GLUT_DOWN:
-		    spinx = (spinx + 5) % 360; 
+		    spinx = (spinx + 5) % 360;
                     glutPostRedisplay();
 		    break;
 		default:
@@ -147,7 +147,7 @@ void mouse(int button, int state, int x, int y) {
 	case GLUT_MIDDLE_BUTTON:
 	    switch (state) {
 		case GLUT_DOWN:
-		    spiny = (spiny + 5) % 360; 
+		    spiny = (spiny + 5) % 360;
                     glutPostRedisplay();
 		    break;
 		default:
@@ -209,8 +209,21 @@ void keyboard (unsigned char key, int x, int y)
    }
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -223,6 +236,7 @@ int main(int argc, char** argv)
     glutMouseFunc(mouse);
     glutKeyboardFunc(keyboard);
     gfxinit();
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;
 }
diff --git a/progs/redbook/polys.c b/progs/redbook/polys.c
index 2983bc5cc3..17c1cfbff2 100644
--- a/progs/redbook/polys.c
+++ b/progs/redbook/polys.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -76,7 +76,7 @@ void display(void)
 /*  draw all polygons in white	*/
     glColor3f (1.0, 1.0, 1.0);
 
-/*  draw one solid, unstippled rectangle,	*/	
+/*  draw one solid, unstippled rectangle,	*/
 /*  then two stippled rectangles		*/
     glRectf (25.0, 25.0, 125.0, 125.0);
     glEnable (GL_POLYGON_STIPPLE);
@@ -89,11 +89,11 @@ void display(void)
     glFlush ();
 }
 
-void myinit (void) 
+void myinit (void)
 {
 /*  clear background to black	*/
     glClearColor (0.0, 0.0, 0.0, 0.0);
-    glShadeModel (GL_FLAT);    
+    glShadeModel (GL_FLAT);
 }
 
 static void reshape(GLsizei w, GLsizei h)
@@ -106,8 +106,21 @@ static void reshape(GLsizei w, GLsizei h)
     glLoadIdentity();
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -119,6 +132,7 @@ int main(int argc, char** argv)
     myinit ();
     glutDisplayFunc(display);
     glutReshapeFunc(reshape);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/sccolorlight.c b/progs/redbook/sccolorlight.c
index 191f266043..0ea750e584 100644
--- a/progs/redbook/sccolorlight.c
+++ b/progs/redbook/sccolorlight.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -39,9 +39,9 @@
  */
 /*
  *  sccolorlight.c
- *  This program demonstrates the use of a colored 
- *  (magenta, in this example) light source.  Objects 
- *  are drawn using a grey material characteristic.  
+ *  This program demonstrates the use of a colored
+ *  (magenta, in this example) light source.  Objects
+ *  are drawn using a grey material characteristic.
  *  A single light source illuminates the objects.
  */
 #include <stdlib.h>
@@ -61,7 +61,7 @@ void myinit(void)
     glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
     glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
     glLightfv(GL_LIGHT0, GL_POSITION, light_position);
-    
+
     glEnable(GL_LIGHTING);
     glEnable(GL_LIGHT0);
     glDepthFunc(GL_LESS);
@@ -75,19 +75,19 @@ void display(void)
     glRotatef (20.0, 1.0, 0.0, 0.0);
 
     glPushMatrix ();
-    glTranslatef (-0.75, 0.5, 0.0); 
+    glTranslatef (-0.75, 0.5, 0.0);
     glRotatef (90.0, 1.0, 0.0, 0.0);
     glutSolidTorus (0.275, 0.85, 20, 20);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (-0.75, -0.5, 0.0); 
+    glTranslatef (-0.75, -0.5, 0.0);
     glRotatef (270.0, 1.0, 0.0, 0.0);
     glutSolidCone (1.0, 2.0, 20, 20);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (0.75, 0.0, -1.0); 
+    glTranslatef (0.75, 0.0, -1.0);
     glutSolidSphere (1.0, 20, 20);
     glPopMatrix ();
 
@@ -100,17 +100,30 @@ void myReshape(int w, int h)
     glViewport(0, 0, w, h);
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
-    if (w <= h) 
-	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w, 
+    if (w <= h)
+	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w,
 	    2.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
-    else 
-	glOrtho (-2.5*(GLfloat)w/(GLfloat)h, 
+    else
+	glOrtho (-2.5*(GLfloat)w/(GLfloat)h,
 	    2.5*(GLfloat)w/(GLfloat)h, -2.5, 2.5, -10.0, 10.0);
     glMatrixMode(GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -122,6 +135,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/scene.c b/progs/redbook/scene.c
index 428e8bd7a1..c3abc727b7 100644
--- a/progs/redbook/scene.c
+++ b/progs/redbook/scene.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -40,7 +40,7 @@
 /*
  *  scene.c
  *  This program demonstrates the use of the GL lighting model.
- *  Objects are drawn using a grey material characteristic. 
+ *  Objects are drawn using a grey material characteristic.
  *  A single light source illuminates the objects.
  */
 #include <stdlib.h>
@@ -60,7 +60,7 @@ void myinit (void)
     glLightfv (GL_LIGHT0, GL_DIFFUSE, light_diffuse);
     glLightfv (GL_LIGHT0, GL_SPECULAR, light_specular);
     glLightfv (GL_LIGHT0, GL_POSITION, light_position);
-    
+
     glEnable (GL_LIGHTING);
     glEnable (GL_LIGHT0);
     glDepthFunc(GL_LESS);
@@ -75,19 +75,19 @@ void display (void)
     glRotatef (20.0, 1.0, 0.0, 0.0);
 
     glPushMatrix ();
-    glTranslatef (-0.75, 0.5, 0.0); 
+    glTranslatef (-0.75, 0.5, 0.0);
     glRotatef (90.0, 1.0, 0.0, 0.0);
     glutSolidTorus (0.275, 0.85, 15, 15);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (-0.75, -0.5, 0.0); 
+    glTranslatef (-0.75, -0.5, 0.0);
     glRotatef (270.0, 1.0, 0.0, 0.0);
     glutSolidCone (1.0, 2.0, 15, 15);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (0.75, 0.0, -1.0); 
+    glTranslatef (0.75, 0.0, -1.0);
     glutSolidSphere (1.0, 15, 15);
     glPopMatrix ();
 
@@ -100,17 +100,30 @@ void myReshape(int w, int h)
     glViewport (0, 0, w, h);
     glMatrixMode (GL_PROJECTION);
     glLoadIdentity ();
-    if (w <= h) 
-	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w, 
+    if (w <= h)
+	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w,
 	    2.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
-    else 
-	glOrtho (-2.5*(GLfloat)w/(GLfloat)h, 
+    else
+	glOrtho (-2.5*(GLfloat)w/(GLfloat)h,
 	    2.5*(GLfloat)w/(GLfloat)h, -2.5, 2.5, -10.0, 10.0);
     glMatrixMode (GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -122,6 +135,7 @@ int main(int argc, char** argv)
     myinit ();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/scenebamb.c b/progs/redbook/scenebamb.c
index a3449b5809..e7264d2003 100644
--- a/progs/redbook/scenebamb.c
+++ b/progs/redbook/scenebamb.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -39,7 +39,7 @@
  */
 /*
  *  scenebamb.c
- *  This program demonstrates use of a blue ambient light 
+ *  This program demonstrates use of a blue ambient light
  *  source.
  */
 #include <stdlib.h>
@@ -59,7 +59,7 @@ void myinit(void)
     glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
     glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
     glLightfv(GL_LIGHT0, GL_POSITION, light_position);
-    
+
     glEnable(GL_LIGHTING);
     glEnable(GL_LIGHT0);
     glDepthFunc(GL_LESS);
@@ -74,19 +74,19 @@ void display(void)
     glRotatef (20.0, 1.0, 0.0, 0.0);
 
     glPushMatrix ();
-    glTranslatef (-0.75, 0.5, 0.0); 
+    glTranslatef (-0.75, 0.5, 0.0);
     glRotatef (90.0, 1.0, 0.0, 0.0);
     glutSolidTorus (0.275, 0.85, 15, 15);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (-0.75, -0.5, 0.0); 
+    glTranslatef (-0.75, -0.5, 0.0);
     glRotatef (270.0, 1.0, 0.0, 0.0);
     glutSolidCone (1.0, 2.0, 15, 15);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (0.75, 0.0, -1.0); 
+    glTranslatef (0.75, 0.0, -1.0);
     glutSolidSphere (1.0, 15, 15);
     glPopMatrix ();
 
@@ -99,17 +99,30 @@ void myReshape(int w, int h)
     glViewport(0, 0, w, h);
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
-    if (w <= h) 
-	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w, 
+    if (w <= h)
+	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w,
 	    2.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
-    else 
-	glOrtho (-2.5*(GLfloat)w/(GLfloat)h, 
+    else
+	glOrtho (-2.5*(GLfloat)w/(GLfloat)h,
 	    2.5*(GLfloat)w/(GLfloat)h, -2.5, 2.5, -10.0, 10.0);
     glMatrixMode(GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -121,6 +134,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/sceneflat.c b/progs/redbook/sceneflat.c
index 5ab2037e4c..10891fb997 100644
--- a/progs/redbook/sceneflat.c
+++ b/progs/redbook/sceneflat.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -58,7 +58,7 @@ void myinit(void)
     glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
     glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
     glLightfv(GL_LIGHT0, GL_POSITION, light_position);
-    
+
     glEnable(GL_LIGHTING);
     glEnable(GL_LIGHT0);
     glDepthFunc(GL_LESS);
@@ -74,19 +74,19 @@ void display(void)
     glRotatef (20.0, 1.0, 0.0, 0.0);
 
     glPushMatrix ();
-    glTranslatef (-0.75, 0.5, 0.0); 
+    glTranslatef (-0.75, 0.5, 0.0);
     glRotatef (90.0, 1.0, 0.0, 0.0);
     glutSolidTorus (0.275, 0.85, 15, 15);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (-0.75, -0.5, 0.0); 
+    glTranslatef (-0.75, -0.5, 0.0);
     glRotatef (270.0, 1.0, 0.0, 0.0);
     glutSolidCone (1.0, 2.0, 15, 15);
     glPopMatrix ();
 
     glPushMatrix ();
-    glTranslatef (0.75, 0.0, -1.0); 
+    glTranslatef (0.75, 0.0, -1.0);
     glutSolidSphere (1.0, 15, 15);
     glPopMatrix ();
 
@@ -99,17 +99,30 @@ void myReshape(int w, int h)
     glViewport(0, 0, w, h);
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
-    if (w <= h) 
-	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w, 
+    if (w <= h)
+	glOrtho (-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w,
 	    2.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
-    else 
-	glOrtho (-2.5*(GLfloat)w/(GLfloat)h, 
+    else
+	glOrtho (-2.5*(GLfloat)w/(GLfloat)h,
 	    2.5*(GLfloat)w/(GLfloat)h, -2.5, 2.5, -10.0, 10.0);
     glMatrixMode(GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -121,6 +134,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/stencil.c b/progs/redbook/stencil.c
index 958cf85c8e..5626d55be6 100644
--- a/progs/redbook/stencil.c
+++ b/progs/redbook/stencil.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -38,9 +38,9 @@
  * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
  */
 /*  stencil.c
- *  This program draws two rotated tori in a window.  
- *  A diamond in the center of the window masks out part 
- *  of the scene.  Within this mask, a different model 
+ *  This program draws two rotated tori in a window.
+ *  A diamond in the center of the window masks out part
+ *  of the scene.  Within this mask, a different model
  *  (a sphere) is drawn in a different color.
  */
 #include <stdlib.h>
@@ -49,7 +49,7 @@
 #define YELLOWMAT   1
 #define BLUEMAT 2
 
-void myinit (void) 
+void myinit (void)
 {
     GLfloat yellow_diffuse[] = { 0.7, 0.7, 0.0, 1.0 };
     GLfloat yellow_specular[] = { 1.0, 1.0, 1.0, 1.0 };
@@ -112,7 +112,7 @@ void display(void)
     glFlush();
 }
 
-/*  Whenever the window is reshaped, redefine the 
+/*  Whenever the window is reshaped, redefine the
  *  coordinate system and redraw the stencil area.
  */
 void myReshape(int w, int h)
@@ -144,8 +144,21 @@ void myReshape(int w, int h)
     glTranslatef(0.0, 0.0, -5.0);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -157,6 +170,7 @@ int main(int argc, char** argv)
     myinit ();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/stroke.c b/progs/redbook/stroke.c
index d8c75c89fe..19b0391cba 100644
--- a/progs/redbook/stroke.c
+++ b/progs/redbook/stroke.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -38,10 +38,10 @@
  * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
  */
 /*
- *  stroke.c 
- *  This program demonstrates some characters of a 
+ *  stroke.c
+ *  This program demonstrates some characters of a
  *  stroke (vector) font.  The characters are represented
- *  by display lists, which are given numbers which 
+ *  by display lists, which are given numbers which
  *  correspond to the ASCII values of the characters.
  *  Use of glCallLists() is demonstrated.
  */
@@ -59,7 +59,7 @@ typedef struct charpoint {
 } CP;
 
 CP Adata[] = {
-    { 0, 0, PT}, {0, 9, PT}, {1, 10, PT}, {4, 10, PT}, 
+    { 0, 0, PT}, {0, 9, PT}, {1, 10, PT}, {4, 10, PT},
     {5, 9, PT}, {5, 0, STROKE}, {0, 5, PT}, {5, 5, END}
 };
 
@@ -69,18 +69,18 @@ CP Edata[] = {
 };
 
 CP Pdata[] = {
-    {0, 0, PT}, {0, 10, PT},  {4, 10, PT}, {5, 9, PT}, {5, 6, PT}, 
+    {0, 0, PT}, {0, 10, PT},  {4, 10, PT}, {5, 9, PT}, {5, 6, PT},
     {4, 5, PT}, {0, 5, END}
 };
 
 CP Rdata[] = {
-    {0, 0, PT}, {0, 10, PT},  {4, 10, PT}, {5, 9, PT}, {5, 6, PT}, 
+    {0, 0, PT}, {0, 10, PT},  {4, 10, PT}, {5, 9, PT}, {5, 6, PT},
     {4, 5, PT}, {0, 5, STROKE}, {3, 5, PT}, {5, 0, END}
 };
 
 CP Sdata[] = {
-    {0, 1, PT}, {1, 0, PT}, {4, 0, PT}, {5, 1, PT}, {5, 4, PT}, 
-    {4, 5, PT}, {1, 5, PT}, {0, 6, PT}, {0, 9, PT}, {1, 10, PT}, 
+    {0, 1, PT}, {1, 0, PT}, {4, 0, PT}, {5, 1, PT}, {5, 4, PT},
+    {4, 5, PT}, {1, 5, PT}, {0, 6, PT}, {0, 9, PT}, {1, 10, PT},
     {4, 10, PT}, {5, 9, END}
 };
 
@@ -163,8 +163,21 @@ static void reshape(GLsizei w, GLsizei h)
     glLoadIdentity();
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int main(int argc, char** argv)
@@ -176,6 +189,7 @@ int main(int argc, char** argv)
     myinit ();
     glutDisplayFunc(display);
     glutReshapeFunc(reshape);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/surface.c b/progs/redbook/surface.c
index fb2691eb7c..8ff1574188 100644
--- a/progs/redbook/surface.c
+++ b/progs/redbook/surface.c
@@ -2,14 +2,14 @@
 
 /**
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -23,8 +23,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -38,7 +38,7 @@
  */
 /**
  *  surface.c
- *  This program draws a NURBS surface in the shape of a 
+ *  This program draws a NURBS surface in the shape of a
  *  symmetrical hill.
  */
 #include <GL/glut.h>
@@ -65,9 +65,9 @@ void init_surface(void)
 	    else
 		ctlpoints[u][v][2] = -3.0;
 	}
-    }				
-}				
-			
+    }
+}
+
 /*  Initialize material property and depth buffer.
  */
 void myinit(void)
@@ -111,12 +111,12 @@ void display(void)
     glScalef (0.25, 0.25, 0.25);
 
     gluBeginSurface(theNurb);
-    gluNurbsSurface(theNurb, 
+    gluNurbsSurface(theNurb,
 	    8, knots,
 	    8, knots,
 	    4 * 3,
 	    3,
-	    &ctlpoints[0][0][0], 
+	    &ctlpoints[0][0][0],
 	    4, 4,
 	    GL_MAP2_VERTEX_3);
     gluEndSurface(theNurb);
@@ -134,7 +134,7 @@ void display(void)
     glEnd();
     glEnable(GL_LIGHTING);
     }
-        
+
     glPopMatrix();
     glutSwapBuffers();
 }
@@ -194,6 +194,19 @@ mouse(int button, int state, int x, int y)
     }
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /* Main Loop */
 int
 main(int argc, char** argv)
@@ -212,6 +225,7 @@ main(int argc, char** argv)
     glutAttachMenu(GLUT_RIGHT_BUTTON);
     glutMouseFunc(mouse);
     glutMotionFunc(motion);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/teaambient.c b/progs/redbook/teaambient.c
index 62c091c70a..53b5111752 100644
--- a/progs/redbook/teaambient.c
+++ b/progs/redbook/teaambient.c
@@ -3,14 +3,14 @@
 
 /**
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -47,7 +47,7 @@
 
 /*  Initialize light source and lighting model.
  */
-void 
+void
 myinit(void)
 {
     GLfloat light_ambient[] =
@@ -78,7 +78,7 @@ myinit(void)
     glEnable(GL_DEPTH_TEST);
 }
 
-void 
+void
 display(void)
 {
     GLfloat low_ambient[] =
@@ -114,7 +114,7 @@ display(void)
     glFlush();
 }
 
-void 
+void
 myReshape(int w, int h)
 {
     glViewport(0, 0, w, h);
@@ -129,8 +129,21 @@ myReshape(int w, int h)
     glMatrixMode(GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*  Main Loop
- *  Open window with initial window size, title bar, 
+ *  Open window with initial window size, title bar,
  *  RGBA display mode, and handle input events.
  */
 int
@@ -143,6 +156,7 @@ main(int argc, char **argv)
     myinit();
     glutReshapeFunc(myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/teapots.c b/progs/redbook/teapots.c
index 2431cae735..edca5441ec 100644
--- a/progs/redbook/teapots.c
+++ b/progs/redbook/teapots.c
@@ -188,6 +188,19 @@ myReshape(int w, int h)
   glMatrixMode(GL_MODELVIEW);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 /*
  * Main Loop Open window with initial window size, title bar, RGBA display
  * mode, and handle input events.
@@ -201,6 +214,7 @@ main(int argc, char **argv)
   myinit();
   glutReshapeFunc(myReshape);
   glutDisplayFunc(display);
+  glutKeyboardFunc(key);
   glutMainLoop();
   return 0;             /* ANSI C requires main to return int. */
 }
diff --git a/progs/redbook/texbind.c b/progs/redbook/texbind.c
index 92c226fbdb..6a828ab2bd 100644
--- a/progs/redbook/texbind.c
+++ b/progs/redbook/texbind.c
@@ -1,13 +1,13 @@
 /*
  * Copyright (c) 1993-1997, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -21,8 +21,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -36,7 +36,7 @@
  */
 
 /*  texbind.c
- *  This program demonstrates using glBindTexture() by 
+ *  This program demonstrates using glBindTexture() by
  *  creating and managing two textures.
  */
 #include <GL/glut.h>
@@ -55,15 +55,15 @@ static GLuint texName[2];
 void makeCheckImages(void)
 {
    int i, j, c;
-    
+
    for (i = 0; i < checkImageHeight; i++) {
       for (j = 0; j < checkImageWidth; j++) {
-         c = ((((i&0x8)==0)^((j&0x8))==0))*255;
+         c = ((((i&0x8)==0)^((j&0x8)==0)))*255;
          checkImage[i][j][0] = (GLubyte) c;
          checkImage[i][j][1] = (GLubyte) c;
          checkImage[i][j][2] = (GLubyte) c;
          checkImage[i][j][3] = (GLubyte) 255;
-         c = ((((i&0x10)==0)^((j&0x10))==0))*255;
+         c = ((((i&0x10)==0)^((j&0x10)==0)))*255;
          otherImage[i][j][0] = (GLubyte) c;
          otherImage[i][j][1] = (GLubyte) 0;
          otherImage[i][j][2] = (GLubyte) 0;
@@ -73,7 +73,7 @@ void makeCheckImages(void)
 }
 
 void init(void)
-{    
+{
    glClearColor (0.0, 0.0, 0.0, 0.0);
    glShadeModel(GL_FLAT);
    glEnable(GL_DEPTH_TEST);
@@ -85,9 +85,9 @@ void init(void)
    glBindTexture(GL_TEXTURE_2D, texName[0]);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, 
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
                    GL_NEAREST);
-   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, 
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
                    GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth,
                 checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE,
@@ -99,8 +99,8 @@ void init(void)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
-   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, 
-                checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, 
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth,
+                checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE,
                 otherImage);
    glEnable(GL_TEXTURE_2D);
 }
@@ -158,7 +158,7 @@ int main(int argc, char** argv)
    glutDisplayFunc(display);
    glutKeyboardFunc (keyboard);
    glutMainLoop();
-   return 0; 
+   return 0;
 }
 #else
 int main(int argc, char** argv)
@@ -169,4 +169,3 @@ int main(int argc, char** argv)
     return 0;
 }
 #endif
-
diff --git a/progs/redbook/texsub.c b/progs/redbook/texsub.c
index 5dc36ec4e7..4e829675ab 100644
--- a/progs/redbook/texsub.c
+++ b/progs/redbook/texsub.c
@@ -1,13 +1,13 @@
 /*
  * Copyright (c) 1993-1997, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -21,8 +21,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -40,7 +40,7 @@
  *  two rectangles.  This program clamps the texture, if
  *  the texture coordinates fall outside 0.0 and 1.0.
  *  If the s key is pressed, a texture subimage is used to
- *  alter the original texture.  If the r key is pressed, 
+ *  alter the original texture.  If the r key is pressed,
  *  the original texture is restored.
  */
 #include <GL/glut.h>
@@ -61,10 +61,10 @@ static GLuint texName;
 void makeCheckImages(void)
 {
    int i, j, c;
-    
+
    for (i = 0; i < checkImageHeight; i++) {
       for (j = 0; j < checkImageWidth; j++) {
-         c = ((((i&0x8)==0)^((j&0x8))==0))*255;
+         c = ((((i&0x8)==0)^((j&0x8)==0)))*255;
          checkImage[i][j][0] = (GLubyte) c;
          checkImage[i][j][1] = (GLubyte) c;
          checkImage[i][j][2] = (GLubyte) c;
@@ -73,7 +73,7 @@ void makeCheckImages(void)
    }
    for (i = 0; i < subImageHeight; i++) {
       for (j = 0; j < subImageWidth; j++) {
-         c = ((((i&0x4)==0)^((j&0x4))==0))*255;
+         c = ((((i&0x4)==0)^((j&0x4)==0)))*255;
          subImage[i][j][0] = (GLubyte) c;
          subImage[i][j][1] = (GLubyte) 0;
          subImage[i][j][2] = (GLubyte) 0;
@@ -83,7 +83,7 @@ void makeCheckImages(void)
 }
 
 void init(void)
-{    
+{
    glClearColor (0.0, 0.0, 0.0, 0.0);
    glShadeModel(GL_FLAT);
    glEnable(GL_DEPTH_TEST);
@@ -98,7 +98,7 @@ void init(void)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, checkImageHeight, 
+   glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, checkImageHeight,
                 0, GL_RGBA, GL_UNSIGNED_BYTE, checkImage);
 }
 
@@ -174,7 +174,7 @@ int main(int argc, char** argv)
    glutReshapeFunc(reshape);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
-   return 0; 
+   return 0;
 }
 #else
 int main(int argc, char** argv)
diff --git a/progs/redbook/texturesurf.c b/progs/redbook/texturesurf.c
index 89cdbcc652..0170070eaa 100644
--- a/progs/redbook/texturesurf.c
+++ b/progs/redbook/texturesurf.c
@@ -3,14 +3,14 @@
 
 /*
  * (c) Copyright 1993, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED 
- * Permission to use, copy, modify, and distribute this software for 
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
  * any purpose and without fee is hereby granted, provided that the above
  * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that 
+ * and this permission notice appear in supporting documentation, and that
  * the name of Silicon Graphics, Inc. not be used in advertising
  * or publicity pertaining to distribution of the software without specific,
- * written prior permission. 
+ * written prior permission.
  *
  * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
  * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
@@ -24,8 +24,8 @@
  * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
  * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- * 
- * US Government Users Restricted Rights 
+ *
+ * US Government Users Restricted Rights
  * Use, duplication, or disclosure by the Government is subject to
  * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
  * (c)(1)(ii) of the Rights in Technical Data and Computer Software
@@ -47,17 +47,17 @@
 #include <math.h>
 
 GLfloat ctrlpoints[4][4][3] = {
-    {{ -1.5, -1.5, 4.0}, { -0.5, -1.5, 2.0}, 
-	{0.5, -1.5, -1.0}, {1.5, -1.5, 2.0}}, 
-    {{ -1.5, -0.5, 1.0}, { -0.5, -0.5, 3.0}, 
-	{0.5, -0.5, 0.0}, {1.5, -0.5, -1.0}}, 
-    {{ -1.5, 0.5, 4.0}, { -0.5, 0.5, 0.0}, 
-	{0.5, 0.5, 3.0}, {1.5, 0.5, 4.0}}, 
-    {{ -1.5, 1.5, -2.0}, { -0.5, 1.5, -2.0}, 
+    {{ -1.5, -1.5, 4.0}, { -0.5, -1.5, 2.0},
+	{0.5, -1.5, -1.0}, {1.5, -1.5, 2.0}},
+    {{ -1.5, -0.5, 1.0}, { -0.5, -0.5, 3.0},
+	{0.5, -0.5, 0.0}, {1.5, -0.5, -1.0}},
+    {{ -1.5, 0.5, 4.0}, { -0.5, 0.5, 0.0},
+	{0.5, 0.5, 3.0}, {1.5, 0.5, 4.0}},
+    {{ -1.5, 1.5, -2.0}, { -0.5, 1.5, -2.0},
 	{0.5, 1.5, 0.0}, {1.5, 1.5, -1.0}}
 };
 
-GLfloat texpts[2][2][2] = {{{0.0, 0.0}, {0.0, 1.0}}, 
+GLfloat texpts[2][2][2] = {{{0.0, 0.0}, {0.0, 1.0}},
 			{{1.0, 0.0}, {1.0, 1.0}}};
 
 void display(void)
@@ -76,7 +76,7 @@ void makeImage(void)
 {
     int i, j;
     float ti, tj;
-    
+
     for (i = 0; i < imageWidth; i++) {
 	ti = 2.0*3.14159265*i/imageWidth;
 	for (j = 0; j < imageHeight; j++) {
@@ -93,7 +93,7 @@ void myinit(void)
 {
     glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4,
 	    0, 1, 12, 4, &ctrlpoints[0][0][0]);
-    glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 
+    glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2,
 	    0, 1, 4, 2, &texpts[0][0][0]);
     glEnable(GL_MAP2_TEXTURE_COORD_2);
     glEnable(GL_MAP2_VERTEX_3);
@@ -118,16 +118,29 @@ void myReshape(int w, int h)
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
     if (w <= h)
-	glOrtho(-4.0, 4.0, -4.0*(GLfloat)h/(GLfloat)w, 
+	glOrtho(-4.0, 4.0, -4.0*(GLfloat)h/(GLfloat)w,
 	    4.0*(GLfloat)h/(GLfloat)w, -4.0, 4.0);
     else
-	glOrtho(-4.0*(GLfloat)w/(GLfloat)h, 
+	glOrtho(-4.0*(GLfloat)w/(GLfloat)h,
 	    4.0*(GLfloat)w/(GLfloat)h, -4.0, 4.0, -4.0, 4.0);
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity();
     glRotatef(85.0, 1.0, 1.0, 1.0);
 }
 
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
 int main(int argc, char** argv)
 {
     glutInit(&argc, argv);
@@ -136,6 +149,7 @@ int main(int argc, char** argv)
     myinit();
     glutReshapeFunc (myReshape);
     glutDisplayFunc(display);
+    glutKeyboardFunc(key);
     glutMainLoop();
     return 0;             /* ANSI C requires main to return int. */
 }