int motion_x = -1, motion_y = -1, motion_seq = -1 ;
int passivemotion_x = -1, passivemotion_y = -1, passivemotion_seq = -1 ;
+#define STRING_LENGTH 10
+
static void
bitmapPrintf (const char *fmt, ...)
{
glutSwapBuffers();
}
+static void
+Warning(const char *fmt, va_list ap)
+{
+ printf("%6d Warning callback:\n");
+
+ /* print warning message */
+ vprintf(fmt, ap);
+}
+
+static void
+Error(const char *fmt, va_list ap)
+{
+ char dummy_string[STRING_LENGTH];
+ printf("%6d Error callback:\n");
+
+ /* print warning message */
+ vprintf(fmt, ap);
+
+ /* terminate program, after pause for input so user can see */
+ printf ( "Please enter something to exit: " );
+ fgets ( dummy_string, STRING_LENGTH, stdin );
+
+ /* Call exit directly as freeglut is messed
+ * up internally when an error is called.
+ */
+ exit(1);
+}
+
static void
Reshape(int width, int height)
{
menudestroy_called = 1 ;
printf ( "%6d Window %d MenuDestroy Callback\n",
++sequence_number, window ) ;
- glutPostRedisplay () ;
+
+ if (window) /* When destroyed when shutting down, not always a window defined... */
+ glutPostRedisplay () ;
}
static void
int
main(int argc, char *argv[])
{
-#define STRING_LENGTH 10
int freeglut_window, aux_window ;
char dummy_string[STRING_LENGTH];
int menuID, subMenuA, subMenuB;
+ glutInitWarningFunc(Warning);
+ glutInitErrorFunc(Error);
glutInitWindowSize(500, 250);
glutInitWindowPosition ( 140, 140 );
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE );
glutInit(&argc, argv);
+ glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE,GLUT_ACTION_CONTINUE_EXECUTION);
freeglut_window = glutCreateWindow( "Callback Demo" );
printf ( "Creating window %d as 'Callback Demo'\n", freeglut_window ) ;
glutDialsFunc ( Dials ) ;
glutTabletMotionFunc ( TabletMotion ) ;
glutTabletButtonFunc ( TabletButton ) ;
- glutMenuDestroyFunc ( MenuDestroy );
glutMenuStatusFunc ( MenuStatus );
glutSetKeyRepeat(GLUT_KEY_REPEAT_OFF) ;
glutAddMenuEntry( "Sub menu A1 (01)", 1 );
glutAddMenuEntry( "Sub menu A2 (02)", 2 );
glutAddMenuEntry( "Sub menu A3 (03)", 3 );
+ glutMenuDestroyFunc ( MenuDestroy );
subMenuB = glutCreateMenu( MenuCallback );
glutAddMenuEntry( "Sub menu B1 (04)", 4 );
glutAddMenuEntry( "Sub menu B2 (05)", 5 );
glutAddMenuEntry( "Sub menu B3 (06)", 6 );
glutAddSubMenu( "Going to sub menu A", subMenuA );
+ glutMenuDestroyFunc ( MenuDestroy );
menuID = glutCreateMenu( MenuCallback );
glutAddMenuEntry( "Entry one", 1 );
glutAddMenuEntry( "Entry five", 5 );
glutAddSubMenu( "Enter sub menu A", subMenuA );
glutAddSubMenu( "Enter sub menu B", subMenuB );
+ glutMenuDestroyFunc ( MenuDestroy );
glutAttachMenu( GLUT_LEFT_BUTTON );