#include <GL/freeglut.h>
#include <stdio.h>
#include <stdlib.h>
+#include <stdarg.h>
static int sequence_number = 0 ;
+int windows[2] = {0};
+
int reshape_called = 0, key_called = 0, special_called = 0, visibility_called = 0,
keyup_called = 0, specialup_called = 0, joystick_called = 0, mouse_called = 0,
mousewheel_called = 0, motion_called = 0, passivemotion_called = 0, entry_called = 0,
int mousewheel_number = -1, mousewheel_direction = -1, mousewheel_x = -1, mousewheel_y = -1, mousewheel_seq = -1 ;
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, ...)
+{
+ static char buf[256];
+ va_list args;
+
+ va_start(args, fmt);
+#if defined(WIN32) && !defined(__CYGWIN__)
+ (void) _vsnprintf (buf, sizeof(buf), fmt, args);
+#else
+ (void) vsnprintf (buf, sizeof(buf), fmt, args);
+#endif
+ va_end(args);
+ glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)buf ) ;
+}
+
+
static void
Display(void)
{
- char line[180] ;
int window = glutGetWindow () ;
glClear ( GL_COLOR_BUFFER_BIT );
glPushMatrix ();
glLoadIdentity ();
glColor3ub ( 0, 0, 0 );
- glRasterPos2i ( 10, glutGet ( GLUT_WINDOW_HEIGHT ) - 10 );
+ glRasterPos2i ( 10, glutGet ( GLUT_WINDOW_HEIGHT ) - 20 ); /* 10pt margin above 10pt letters */
if ( reshape_called )
{
- sprintf ( line, "Reshape %d: %d %d\n", reshape_seq, reshape_width, reshape_height );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Reshape %d: %d %d\n", reshape_seq, reshape_width, reshape_height );
}
if ( key_called )
{
- sprintf ( line, "Key %d: %d(%c) %d %d\n", key_seq, key_key, key_key, key_x, key_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Key %d: %d(%c) %d %d\n", key_seq, key_key, key_key, key_x, key_y );
}
if ( special_called )
{
- sprintf ( line, "Special %d: %d(%c) %d %d\n", special_seq, special_key, special_key, special_x, special_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Special %d: %d(%c) %d %d\n", special_seq, special_key, special_key, special_x, special_y );
}
if ( visibility_called )
{
- sprintf ( line, "Visibility %d: %d\n", visibility_seq, visibility_vis );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Visibility %d: %d\n", visibility_seq, visibility_vis );
}
if ( keyup_called )
{
- sprintf ( line, "Key Up %d: %d(%c) %d %d\n", keyup_seq, keyup_key, keyup_key, keyup_x, keyup_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Key Up %d: %d(%c) %d %d\n", keyup_seq, keyup_key, keyup_key, keyup_x, keyup_y );
}
if ( specialup_called )
{
- sprintf ( line, "Special Up %d: %d(%c) %d %d\n", specialup_seq, specialup_key, specialup_key, specialup_x, specialup_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Special Up %d: %d(%c) %d %d\n", specialup_seq, specialup_key, specialup_key, specialup_x, specialup_y );
}
if ( joystick_called )
{
- sprintf ( line, "Joystick %d: %d %d %d %d\n", joystick_seq, joystick_a, joystick_b, joystick_c, joystick_d );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Joystick %d: %d %d %d %d\n", joystick_seq, joystick_a, joystick_b, joystick_c, joystick_d );
}
if ( mouse_called )
{
- sprintf ( line, "Mouse %d: %d %d %d %d\n", mouse_seq, mouse_button, mouse_updown, mouse_x, mouse_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Mouse %d: %d %d %d %d\n", mouse_seq, mouse_button, mouse_updown, mouse_x, mouse_y );
}
if ( mousewheel_called )
{
- sprintf ( line, "Mouse Wheel %d: %d %d %d %d\n", mousewheel_seq, mousewheel_number, mousewheel_direction, mousewheel_x, mousewheel_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Mouse Wheel %d: %d %d %d %d\n", mousewheel_seq, mousewheel_number, mousewheel_direction, mousewheel_x, mousewheel_y );
}
if ( motion_called )
{
- sprintf ( line, "Motion %d: %d %d\n", motion_seq, motion_x, motion_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Motion %d: %d %d\n", motion_seq, motion_x, motion_y );
}
if ( passivemotion_called )
{
- sprintf ( line, "Passive Motion %d: %d %d\n", passivemotion_seq, passivemotion_x, passivemotion_y );
- glutBitmapString ( GLUT_BITMAP_HELVETICA_12, (unsigned char*)line );
+ bitmapPrintf ( "Passive Motion %d: %d %d\n", passivemotion_seq, passivemotion_x, passivemotion_y );
}
glMatrixMode ( GL_PROJECTION );
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)
{
reshape_width = width ;
reshape_height = height ;
reshape_seq = sequence_number ;
+ glViewport(0,0,width,height);
glutPostRedisplay () ;
}
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 ) ;
+ windows[0] = glutCreateWindow( "Callback Demo" );
+ printf ( "Creating window %d as 'Callback Demo'\n", windows[0] ) ;
glClearColor(1.0, 1.0, 1.0, 1.0);
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 );
- aux_window = glutCreateWindow( "Second Window" );
- printf ( "Creating window %d as 'Second Window'\n", aux_window ) ;
+ glutInitWindowPosition ( 140+500+2*glutGet(GLUT_WINDOW_BORDER_WIDTH), 140 );
+ /* Position second window right next to the first */
+ windows[1] = glutCreateWindow( "Second Window" );
+ printf ( "Creating window %d as 'Second Window'\n", windows[1] ) ;
glClearColor(1.0, 1.0, 1.0, 1.0);
projects / freeglut / blobdiff