4 * The windows message processing methods.
6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
7 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
8 * Creation date: Fri Dec 3 1999
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included
18 * in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #include <GL/freeglut.h>
29 #include "freeglut_internal.h"
33 # define VFPRINTF(s,f,a) vfprintf((s),(f),(a))
36 # define VFPRINTF(s,f,a) vfprintf((s),(f),(a))
38 # define VFPRINTF(s,f,a) _doprnt((f),(a),(s))
40 # define VFPRINTF(s,f,a)
46 typedef struct GXDisplayProperties GXDisplayProperties;
47 typedef struct GXKeyList GXKeyList;
50 typedef struct GXKeyList (*GXGETDEFAULTKEYS)(int);
51 typedef int (*GXOPENINPUT)();
53 GXGETDEFAULTKEYS GXGetDefaultKeys_ = NULL;
54 GXOPENINPUT GXOpenInput_ = NULL;
56 struct GXKeyList gxKeyList;
61 * Try to get the maximum value allowed for ints, falling back to the minimum
62 * guaranteed by ISO C99 if there is no suitable header.
68 # define INT_MAX 32767
72 #define MIN(a,b) (((a)<(b)) ? (a) : (b))
77 * TODO BEFORE THE STABLE RELEASE:
79 * There are some issues concerning window redrawing under X11, and maybe
80 * some events are not handled. The Win32 version lacks some more features,
81 * but seems acceptable for not demanding purposes.
83 * Need to investigate why the X11 version breaks out with an error when
84 * closing a window (using the window manager, not glutDestroyWindow)...
87 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
90 * Handle a window configuration change. When no reshape
91 * callback is hooked, the viewport size is updated to
92 * match the new window size.
94 static void fghReshapeWindow ( SFG_Window *window, int width, int height )
96 SFG_Window *current_window = fgStructure.CurrentWindow;
98 freeglut_return_if_fail( window != NULL );
101 #if TARGET_HOST_UNIX_X11
103 XResizeWindow( fgDisplay.Display, window->Window.Handle,
105 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
107 #elif TARGET_HOST_WIN32
113 * For windowed mode, get the current position of the
114 * window and resize taking the size of the frame
115 * decorations into account.
118 /* "GetWindowRect" returns the pixel coordinates of the outside of the window */
119 GetWindowRect( window->Window.Handle, &winRect );
125 if ( window->Parent == NULL )
127 if ( ! window->IsMenu && !window->State.IsGameMode )
129 w += GetSystemMetrics( SM_CXSIZEFRAME ) * 2;
130 h += GetSystemMetrics( SM_CYSIZEFRAME ) * 2 +
131 GetSystemMetrics( SM_CYCAPTION );
137 GetWindowRect( window->Parent->Window.Handle, &parentRect );
138 x -= parentRect.left + GetSystemMetrics( SM_CXSIZEFRAME ) * 2;
139 y -= parentRect.top + GetSystemMetrics( SM_CYSIZEFRAME ) * 2 +
140 GetSystemMetrics( SM_CYCAPTION );
144 * SWP_NOACTIVATE Do not activate the window
145 * SWP_NOOWNERZORDER Do not change position in z-order
146 * SWP_NOSENDCHANGING Supress WM_WINDOWPOSCHANGING message
147 * SWP_NOZORDER Retains the current Z order (ignore 2nd param)
150 SetWindowPos( window->Window.Handle,
153 SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSENDCHANGING |
160 * XXX Should update {window->State.OldWidth, window->State.OldHeight}
161 * XXX to keep in lockstep with UNIX_X11 code.
163 if( FETCH_WCB( *window, Reshape ) )
164 INVOKE_WCB( *window, Reshape, ( width, height ) );
167 fgSetWindow( window );
168 glViewport( 0, 0, width, height );
172 * Force a window redraw. In Windows at least this is only a partial
173 * solution: if the window is increasing in size in either dimension,
174 * the already-drawn part does not get drawn again and things look funny.
175 * But without this we get this bad behaviour whenever we resize the
178 window->State.Redisplay = GL_TRUE;
181 fgSetWindow( current_window );
185 * Calls a window's redraw method. This is used when
186 * a redraw is forced by the incoming window messages.
188 static void fghRedrawWindow ( SFG_Window *window )
190 SFG_Window *current_window = fgStructure.CurrentWindow;
192 freeglut_return_if_fail( window );
193 freeglut_return_if_fail( FETCH_WCB ( *window, Display ) );
195 window->State.Redisplay = GL_FALSE;
197 freeglut_return_if_fail( window->State.Visible );
199 fgSetWindow( window );
201 if( window->State.NeedToResize )
209 window->State.NeedToResize = GL_FALSE;
212 INVOKE_WCB( *window, Display, ( ) );
214 fgSetWindow( current_window );
218 * A static helper function to execute display callback for a window
220 static void fghcbDisplayWindow( SFG_Window *window,
221 SFG_Enumerator *enumerator )
223 if( window->State.Redisplay &&
224 window->State.Visible )
226 window->State.Redisplay = GL_FALSE;
228 #if TARGET_HOST_UNIX_X11
229 fghRedrawWindow ( window ) ;
230 #elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
232 window->Window.Handle, NULL, NULL,
233 RDW_NOERASE | RDW_INTERNALPAINT | RDW_INVALIDATE | RDW_UPDATENOW
238 fgEnumSubWindows( window, fghcbDisplayWindow, enumerator );
242 * Make all windows perform a display call
244 static void fghDisplayAll( void )
246 SFG_Enumerator enumerator;
248 enumerator.found = GL_FALSE;
249 enumerator.data = NULL;
251 fgEnumWindows( fghcbDisplayWindow, &enumerator );
255 * Window enumerator callback to check for the joystick polling code
257 static void fghcbCheckJoystickPolls( SFG_Window *window,
258 SFG_Enumerator *enumerator )
260 long int checkTime = fgElapsedTime( );
262 if( window->State.JoystickLastPoll + window->State.JoystickPollRate <=
265 #if !TARGET_HOST_WINCE
266 fgJoystickPollWindow( window );
267 #endif /* !TARGET_HOST_WINCE */
268 window->State.JoystickLastPoll = checkTime;
271 fgEnumSubWindows( window, fghcbCheckJoystickPolls, enumerator );
275 * Check all windows for joystick polling
277 static void fghCheckJoystickPolls( void )
279 SFG_Enumerator enumerator;
281 enumerator.found = GL_FALSE;
282 enumerator.data = NULL;
284 fgEnumWindows( fghcbCheckJoystickPolls, &enumerator );
288 * Check the global timers
290 static void fghCheckTimers( void )
292 long checkTime = fgElapsedTime( );
294 while( fgState.Timers.First )
296 SFG_Timer *timer = fgState.Timers.First;
298 if( timer->TriggerTime > checkTime )
301 fgListRemove( &fgState.Timers, &timer->Node );
302 fgListAppend( &fgState.FreeTimers, &timer->Node );
304 timer->Callback( timer->ID );
311 long fgElapsedTime( void )
313 if ( fgState.Time.Set )
315 #if TARGET_HOST_UNIX_X11
319 gettimeofday( &now, NULL );
321 elapsed = (now.tv_usec - fgState.Time.Value.tv_usec) / 1000;
322 elapsed += (now.tv_sec - fgState.Time.Value.tv_sec) * 1000;
325 #elif TARGET_HOST_WIN32
326 return timeGetTime() - fgState.Time.Value;
327 #elif TARGET_HOST_WINCE
328 return GetTickCount() - fgState.Time.Value;
333 #if TARGET_HOST_UNIX_X11
334 gettimeofday( &fgState.Time.Value, NULL );
335 #elif TARGET_HOST_WIN32
336 fgState.Time.Value = timeGetTime ();
337 #elif TARGET_HOST_WINCE
338 fgState.Time.Value = GetTickCount();
340 fgState.Time.Set = GL_TRUE ;
349 void fgError( const char *fmt, ... )
355 fprintf( stderr, "freeglut ");
356 if( fgState.ProgramName )
357 fprintf( stderr, "(%s): ", fgState.ProgramName );
358 VFPRINTF( stderr, fmt, ap );
359 fprintf( stderr, "\n" );
363 if ( fgState.Initialised )
369 void fgWarning( const char *fmt, ... )
375 fprintf( stderr, "freeglut ");
376 if( fgState.ProgramName )
377 fprintf( stderr, "(%s): ", fgState.ProgramName );
378 VFPRINTF( stderr, fmt, ap );
379 fprintf( stderr, "\n" );
385 * Indicates whether Joystick events are being used by ANY window.
387 * The current mechanism is to walk all of the windows and ask if
388 * there is a joystick callback. We have a short-circuit early
389 * return if we find any joystick handler registered.
391 * The real way to do this is to make use of the glutTimer() API
392 * to more cleanly re-implement the joystick API. Then, this code
393 * and all other "joystick timer" code can be yanked.
396 static void fghCheckJoystickCallback( SFG_Window* w, SFG_Enumerator* e)
398 if( FETCH_WCB( *w, Joystick ) )
403 fgEnumSubWindows( w, fghCheckJoystickCallback, e );
405 static int fghHaveJoystick( void )
407 SFG_Enumerator enumerator;
409 enumerator.found = GL_FALSE;
410 enumerator.data = NULL;
411 fgEnumWindows( fghCheckJoystickCallback, &enumerator );
412 return !!enumerator.data;
414 static void fghHavePendingRedisplaysCallback( SFG_Window* w, SFG_Enumerator* e)
416 if( w->State.Redisplay )
421 fgEnumSubWindows( w, fghHavePendingRedisplaysCallback, e );
423 static int fghHavePendingRedisplays (void)
425 SFG_Enumerator enumerator;
427 enumerator.found = GL_FALSE;
428 enumerator.data = NULL;
429 fgEnumWindows( fghHavePendingRedisplaysCallback, &enumerator );
430 return !!enumerator.data;
433 * Returns the number of GLUT ticks (milliseconds) till the next timer event.
435 static long fghNextTimer( void )
438 SFG_Timer *timer = fgState.Timers.First;
441 ret = timer->TriggerTime - fgElapsedTime();
448 * Does the magic required to relinquish the CPU until something interesting
451 static void fghSleepForEvents( void )
455 if( fgState.IdleCallback || fghHavePendingRedisplays( ) )
458 msec = fghNextTimer( );
459 /* XXX Use GLUT timers for joysticks... */
460 /* XXX Dumb; forces granularity to .01sec */
461 if( fghHaveJoystick( ) && ( msec > 10 ) )
464 #if TARGET_HOST_UNIX_X11
466 * Possibly due to aggressive use of XFlush() and friends,
467 * it is possible to have our socket drained but still have
468 * unprocessed events. (Or, this may just be normal with
469 * X, anyway?) We do non-trivial processing of X events
470 * after the event-reading loop, in any case, so we
471 * need to allow that we may have an empty socket but non-
474 if( ! XPending( fgDisplay.Display ) )
481 socket = ConnectionNumber( fgDisplay.Display );
483 FD_SET( socket, &fdset );
484 wait.tv_sec = msec / 1000;
485 wait.tv_usec = (msec % 1000) * 1000;
486 err = select( socket+1, &fdset, NULL, NULL, &wait );
488 if( ( -1 == err ) && ( errno != EINTR ) )
489 fgWarning ( "freeglut select() error: %d", errno );
491 #elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
492 MsgWaitForMultipleObjects( 0, NULL, FALSE, msec, QS_ALLEVENTS );
496 #if TARGET_HOST_UNIX_X11
498 * Returns GLUT modifier mask for an XEvent.
500 static int fghGetXModifiers( XEvent *event )
504 if( event->xkey.state & ( ShiftMask | LockMask ) )
505 ret |= GLUT_ACTIVE_SHIFT;
506 if( event->xkey.state & ControlMask )
507 ret |= GLUT_ACTIVE_CTRL;
508 if( event->xkey.state & Mod1Mask )
509 ret |= GLUT_ACTIVE_ALT;
516 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
519 * Executes a single iteration in the freeglut processing loop.
521 void FGAPIENTRY glutMainLoopEvent( void )
523 #if TARGET_HOST_UNIX_X11
527 /* This code was repeated constantly, so here it goes into a definition: */
528 #define GETWINDOW(a) \
529 window = fgWindowByHandle( event.a.window ); \
530 if( window == NULL ) \
533 #define GETMOUSE(a) \
534 window->State.MouseX = event.a.x; \
535 window->State.MouseY = event.a.y;
537 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutMainLoopEvent" );
539 while( XPending( fgDisplay.Display ) )
541 XNextEvent( fgDisplay.Display, &event );
546 /* Destroy the window when the WM_DELETE_WINDOW message arrives */
547 if( (Atom) event.xclient.data.l[ 0 ] == fgDisplay.DeleteWindow )
549 GETWINDOW( xclient );
551 fgDestroyWindow ( window );
553 if( fgState.ActionOnWindowClose == GLUT_ACTION_EXIT )
558 else if( fgState.ActionOnWindowClose == GLUT_ACTION_GLUTMAINLOOP_RETURNS )
559 fgState.ExecState = GLUT_EXEC_STATE_STOP;
566 * CreateNotify causes a configure-event so that sub-windows are
567 * handled compatibly with GLUT. Otherwise, your sub-windows
568 * (in freeglut only) will not get an initial reshape event,
569 * which can break things.
571 * GLUT presumably does this because it generally tries to treat
572 * sub-windows the same as windows.
574 * XXX Technically, GETWINDOW( xconfigure ) and
575 * XXX {event.xconfigure} may not be legit ways to get at
576 * XXX data for CreateNotify events. In practice, the data
577 * XXX is in a union which is laid out much the same either
578 * XXX way. But if you want to split hairs, this isn't legit,
579 * XXX and we should instead duplicate some code.
582 case ConfigureNotify:
583 GETWINDOW( xconfigure );
585 int width = event.xconfigure.width;
586 int height = event.xconfigure.height;
588 if( ( width != window->State.OldWidth ) ||
589 ( height != window->State.OldHeight ) )
591 SFG_Window *current_window = fgStructure.CurrentWindow;
593 window->State.OldWidth = width;
594 window->State.OldHeight = height;
595 if( FETCH_WCB( *window, Reshape ) )
596 INVOKE_WCB( *window, Reshape, ( width, height ) );
599 fgSetWindow( window );
600 glViewport( 0, 0, width, height );
602 glutPostRedisplay( );
604 fgSetWindow( current_window );
611 * This is sent to confirm the XDestroyWindow call.
613 * XXX WHY is this commented out? Should we re-enable it?
615 /* fgAddToWindowDestroyList ( window ); */
620 * We are too dumb to process partial exposes...
622 * XXX Well, we could do it. However, it seems to only
623 * XXX be potentially useful for single-buffered (since
624 * XXX double-buffered does not respect viewport when we
625 * XXX do a buffer-swap).
628 if( event.xexpose.count == 0 )
630 GETWINDOW( xexpose );
631 window->State.Redisplay = GL_TRUE;
638 * If we never do anything with this, can we just not ask to
639 * get these messages?
645 * Have the client's keyboard knowledge updated (xlib.ps,
646 * page 206, says that's a good thing to do)
648 XRefreshKeyboardMapping( (XMappingEvent *) &event );
651 case VisibilityNotify:
653 GETWINDOW( xvisibility );
655 * XXX INVOKE_WCB() does this check for us.
657 if( ! FETCH_WCB( *window, WindowStatus ) )
659 fgSetWindow( window );
662 * Sending this event, the X server can notify us that the window
663 * has just acquired one of the three possible visibility states:
664 * VisibilityUnobscured, VisibilityPartiallyObscured or
665 * VisibilityFullyObscured
667 switch( event.xvisibility.state )
669 case VisibilityUnobscured:
670 INVOKE_WCB( *window, WindowStatus, ( GLUT_FULLY_RETAINED ) );
671 window->State.Visible = GL_TRUE;
674 case VisibilityPartiallyObscured:
675 INVOKE_WCB( *window, WindowStatus,
676 ( GLUT_PARTIALLY_RETAINED ) );
677 window->State.Visible = GL_TRUE;
680 case VisibilityFullyObscured:
681 INVOKE_WCB( *window, WindowStatus, ( GLUT_FULLY_COVERED ) );
682 window->State.Visible = GL_FALSE;
686 fgWarning( "Unknown X visibility state: %d",
687 event.xvisibility.state );
695 GETWINDOW( xcrossing );
696 GETMOUSE( xcrossing );
697 if( ( event.type == LeaveNotify ) && window->IsMenu &&
698 window->ActiveMenu && window->ActiveMenu->IsActive )
699 fgUpdateMenuHighlight( window->ActiveMenu );
701 INVOKE_WCB( *window, Entry, ( ( EnterNotify == event.type ) ?
708 GETWINDOW( xmotion );
711 if( window->ActiveMenu )
713 if( window == window->ActiveMenu->ParentWindow )
715 window->ActiveMenu->Window->State.MouseX =
716 event.xmotion.x_root - window->ActiveMenu->X;
717 window->ActiveMenu->Window->State.MouseY =
718 event.xmotion.y_root - window->ActiveMenu->Y;
721 fgUpdateMenuHighlight( window->ActiveMenu );
727 * XXX For more than 5 buttons, just check {event.xmotion.state},
728 * XXX rather than a host of bit-masks? Or maybe we need to
729 * XXX track ButtonPress/ButtonRelease events in our own
732 #define BUTTON_MASK \
733 ( Button1Mask | Button2Mask | Button3Mask | Button4Mask | Button5Mask )
734 if ( event.xmotion.state & BUTTON_MASK )
735 INVOKE_WCB( *window, Motion, ( event.xmotion.x,
738 INVOKE_WCB( *window, Passive, ( event.xmotion.x,
746 GLboolean pressed = GL_TRUE;
749 if( event.type == ButtonRelease )
753 * A mouse button has been pressed or released. Traditionally,
754 * break if the window was found within the freeglut structures.
756 GETWINDOW( xbutton );
760 * An X button (at least in XFree86) is numbered from 1.
761 * A GLUT button is numbered from 0.
762 * Old GLUT passed through buttons other than just the first
763 * three, though it only gave symbolic names and official
764 * support to the first three.
766 button = event.xbutton.button - 1;
769 * Do not execute the application's mouse callback if a menu
770 * is hooked to this button. In that case an appropriate
771 * private call should be generated.
773 if( fgCheckActiveMenu( window, button, pressed,
774 event.xbutton.x_root, event.xbutton.y_root ) )
778 * Check if there is a mouse or mouse wheel callback hooked to the
781 if( ! FETCH_WCB( *window, Mouse ) &&
782 ! FETCH_WCB( *window, MouseWheel ) )
785 fgState.Modifiers = fghGetXModifiers( &event );
787 /* Finally execute the mouse or mouse wheel callback */
788 if( ( button < glutDeviceGet ( GLUT_NUM_MOUSE_BUTTONS ) ) || ( ! FETCH_WCB( *window, MouseWheel ) ) )
789 INVOKE_WCB( *window, Mouse, ( button,
790 pressed ? GLUT_DOWN : GLUT_UP,
797 * Map 4 and 5 to wheel zero; EVEN to +1, ODD to -1
798 * " 6 and 7 " " one; ...
800 * XXX This *should* be behind some variables/macros,
801 * XXX since the order and numbering isn't certain
802 * XXX See XFree86 configuration docs (even back in the
803 * XXX 3.x days, and especially with 4.x).
805 * XXX Note that {button} has already been decremeted
806 * XXX in mapping from X button numbering to GLUT.
808 int wheel_number = (button - glutDeviceGet ( GLUT_NUM_MOUSE_BUTTONS )) / 2;
814 INVOKE_WCB( *window, MouseWheel, ( wheel_number,
821 /* Trash the modifiers state */
822 fgState.Modifiers = 0xffffffff;
829 FGCBKeyboard keyboard_cb;
830 FGCBSpecial special_cb;
835 /* Detect auto repeated keys, if configured globally or per-window */
837 if ( fgState.KeyRepeat==GLUT_KEY_REPEAT_OFF || window->State.IgnoreKeyRepeat==GL_TRUE )
839 if (event.type==KeyRelease)
842 * Look at X11 keystate to detect repeat mode.
843 * While X11 says the key is actually held down, we'll ignore KeyRelease/KeyPress pairs.
847 XQueryKeymap( fgDisplay.Display, keys ); /* Look at X11 keystate to detect repeat mode */
849 if ( event.xkey.keycode<256 ) /* XQueryKeymap is limited to 256 keycodes */
851 if ( keys[event.xkey.keycode>>3] & (1<<(event.xkey.keycode%8)) )
852 window->State.KeyRepeating = GL_TRUE;
854 window->State.KeyRepeating = GL_FALSE;
859 window->State.KeyRepeating = GL_FALSE;
861 /* Cease processing this event if it is auto repeated */
863 if (window->State.KeyRepeating)
866 if( event.type == KeyPress )
868 keyboard_cb = (FGCBKeyboard)( FETCH_WCB( *window, Keyboard ));
869 special_cb = (FGCBSpecial) ( FETCH_WCB( *window, Special ));
873 keyboard_cb = (FGCBKeyboard)( FETCH_WCB( *window, KeyboardUp ));
874 special_cb = (FGCBSpecial) ( FETCH_WCB( *window, SpecialUp ));
877 /* Is there a keyboard/special callback hooked for this window? */
878 if( keyboard_cb || special_cb )
880 XComposeStatus composeStatus;
881 char asciiCode[ 32 ];
885 /* Check for the ASCII/KeySym codes associated with the event: */
886 len = XLookupString( &event.xkey, asciiCode, sizeof(asciiCode),
887 &keySym, &composeStatus
890 /* GLUT API tells us to have two separate callbacks... */
893 /* ...one for the ASCII translateable keypresses... */
896 fgSetWindow( window );
897 fgState.Modifiers = fghGetXModifiers( &event );
898 keyboard_cb( asciiCode[ 0 ],
899 event.xkey.x, event.xkey.y
901 fgState.Modifiers = 0xffffffff;
909 * ...and one for all the others, which need to be
910 * translated to GLUT_KEY_Xs...
914 case XK_F1: special = GLUT_KEY_F1; break;
915 case XK_F2: special = GLUT_KEY_F2; break;
916 case XK_F3: special = GLUT_KEY_F3; break;
917 case XK_F4: special = GLUT_KEY_F4; break;
918 case XK_F5: special = GLUT_KEY_F5; break;
919 case XK_F6: special = GLUT_KEY_F6; break;
920 case XK_F7: special = GLUT_KEY_F7; break;
921 case XK_F8: special = GLUT_KEY_F8; break;
922 case XK_F9: special = GLUT_KEY_F9; break;
923 case XK_F10: special = GLUT_KEY_F10; break;
924 case XK_F11: special = GLUT_KEY_F11; break;
925 case XK_F12: special = GLUT_KEY_F12; break;
927 case XK_Left: special = GLUT_KEY_LEFT; break;
928 case XK_Right: special = GLUT_KEY_RIGHT; break;
929 case XK_Up: special = GLUT_KEY_UP; break;
930 case XK_Down: special = GLUT_KEY_DOWN; break;
933 case XK_Prior: special = GLUT_KEY_PAGE_UP; break;
935 case XK_Next: special = GLUT_KEY_PAGE_DOWN; break;
937 case XK_Home: special = GLUT_KEY_HOME; break;
939 case XK_End: special = GLUT_KEY_END; break;
941 case XK_Insert: special = GLUT_KEY_INSERT; break;
945 * Execute the callback (if one has been specified),
946 * given that the special code seems to be valid...
948 if( special_cb && (special != -1) )
950 fgSetWindow( window );
951 fgState.Modifiers = fghGetXModifiers( &event );
952 special_cb( special, event.xkey.x, event.xkey.y );
953 fgState.Modifiers = 0xffffffff;
961 break; /* XXX Should disable this event */
964 fgWarning ("Unknown X event type: %d", event.type);
969 #elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
973 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutMainLoopEvent" );
975 while( PeekMessage( &stMsg, NULL, 0, 0, PM_NOREMOVE ) )
977 if( GetMessage( &stMsg, NULL, 0, 0 ) == 0 )
979 if( fgState.ActionOnWindowClose == GLUT_ACTION_EXIT )
984 else if( fgState.ActionOnWindowClose == GLUT_ACTION_GLUTMAINLOOP_RETURNS )
985 fgState.ExecState = GLUT_EXEC_STATE_STOP;
990 TranslateMessage( &stMsg );
991 DispatchMessage( &stMsg );
995 if( fgState.Timers.First )
997 fghCheckJoystickPolls( );
1004 * Enters the freeglut processing loop.
1005 * Stays until the "ExecState" changes to "GLUT_EXEC_STATE_STOP".
1007 void FGAPIENTRY glutMainLoop( void )
1011 #if TARGET_HOST_WIN32 || TARGET_HOST_WINCE
1012 SFG_Window *window = (SFG_Window *)fgStructure.Windows.First ;
1015 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutMainLoop" );
1017 #if TARGET_HOST_WIN32 || TARGET_HOST_WINCE
1019 * Processing before the main loop: If there is a window which is open and
1020 * which has a visibility callback, call it. I know this is an ugly hack,
1021 * but I'm not sure what else to do about it. Ideally we should leave
1022 * something uninitialized in the create window code and initialize it in
1023 * the main loop, and have that initialization create a "WM_ACTIVATE"
1024 * message. Then we would put the visibility callback code in the
1025 * "case WM_ACTIVATE" block below. - John Fay -- 10/24/02
1029 if ( FETCH_WCB( *window, Visibility ) )
1031 SFG_Window *current_window = fgStructure.CurrentWindow ;
1033 INVOKE_WCB( *window, Visibility, ( window->State.Visible ) );
1034 fgSetWindow( current_window );
1037 window = (SFG_Window *)window->Node.Next ;
1041 fgState.ExecState = GLUT_EXEC_STATE_RUNNING ;
1042 while( fgState.ExecState == GLUT_EXEC_STATE_RUNNING )
1046 glutMainLoopEvent( );
1048 * Step through the list of windows, seeing if there are any
1049 * that are not menus
1051 for( window = ( SFG_Window * )fgStructure.Windows.First;
1053 window = ( SFG_Window * )window->Node.Next )
1054 if ( ! ( window->IsMenu ) )
1058 fgState.ExecState = GLUT_EXEC_STATE_STOP;
1061 if( fgState.IdleCallback )
1063 if( fgStructure.CurrentWindow &&
1064 fgStructure.CurrentWindow->IsMenu )
1066 fgSetWindow( window );
1067 fgState.IdleCallback( );
1070 fghSleepForEvents( );
1075 * When this loop terminates, destroy the display, state and structure
1076 * of a freeglut session, so that another glutInit() call can happen
1078 * Save the "ActionOnWindowClose" because "fgDeinitialize" resets it.
1080 action = fgState.ActionOnWindowClose;
1082 if( action == GLUT_ACTION_EXIT )
1087 * Leaves the freeglut processing loop.
1089 void FGAPIENTRY glutLeaveMainLoop( void )
1091 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLeaveMainLoop" );
1092 fgState.ExecState = GLUT_EXEC_STATE_STOP ;
1096 #if TARGET_HOST_WIN32 || TARGET_HOST_WINCE
1098 * Determine a GLUT modifer mask based on MS-WINDOWS system info.
1100 static int fghGetWin32Modifiers (void)
1103 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1104 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1105 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1106 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1107 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1108 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1112 * The window procedure for handling Win32 events
1114 LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam,
1121 FREEGLUT_INTERNAL_ERROR_EXIT_IF_NOT_INITIALISED ( "Event Handler" ) ;
1123 window = fgWindowByHandle( hWnd );
1125 if ( ( window == NULL ) && ( uMsg != WM_CREATE ) )
1126 return DefWindowProc( hWnd, uMsg, wParam, lParam );
1128 /* printf ( "Window %3d message <%04x> %12d %12d\n", window?window->ID:0,
1129 uMsg, wParam, lParam ); */
1133 /* The window structure is passed as the creation structure paramter... */
1134 window = (SFG_Window *) (((LPCREATESTRUCT) lParam)->lpCreateParams);
1135 FREEGLUT_INTERNAL_ERROR_EXIT ( ( window != NULL ), "Cannot create window",
1138 window->Window.Handle = hWnd;
1139 window->Window.Device = GetDC( hWnd );
1140 if( window->IsMenu )
1142 unsigned int current_DisplayMode = fgState.DisplayMode;
1143 fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH;
1144 #if !TARGET_HOST_WINCE
1145 fgSetupPixelFormat( window, GL_FALSE, PFD_MAIN_PLANE );
1147 fgState.DisplayMode = current_DisplayMode;
1149 if( fgStructure.MenuContext )
1150 wglMakeCurrent( window->Window.Device,
1151 fgStructure.MenuContext->Context
1155 fgStructure.MenuContext =
1156 (SFG_MenuContext *)malloc( sizeof(SFG_MenuContext) );
1157 fgStructure.MenuContext->Context =
1158 wglCreateContext( window->Window.Device );
1161 /* window->Window.Context = wglGetCurrentContext (); */
1162 window->Window.Context = wglCreateContext( window->Window.Device );
1166 #if !TARGET_HOST_WINCE
1167 fgSetupPixelFormat( window, GL_FALSE, PFD_MAIN_PLANE );
1170 if( ! fgState.UseCurrentContext )
1171 window->Window.Context =
1172 wglCreateContext( window->Window.Device );
1175 window->Window.Context = wglGetCurrentContext( );
1176 if( ! window->Window.Context )
1177 window->Window.Context =
1178 wglCreateContext( window->Window.Device );
1182 window->State.NeedToResize = GL_TRUE;
1183 window->State.Width = fgState.Size.X;
1184 window->State.Height = fgState.Size.Y;
1186 ReleaseDC( window->Window.Handle, window->Window.Device );
1188 #if TARGET_HOST_WINCE
1189 /* Take over button handling */
1191 HINSTANCE dxDllLib=LoadLibrary(_T("gx.dll"));
1194 GXGetDefaultKeys_=(GXGETDEFAULTKEYS)GetProcAddress(dxDllLib, _T("?GXGetDefaultKeys@@YA?AUGXKeyList@@H@Z"));
1195 GXOpenInput_=(GXOPENINPUT)GetProcAddress(dxDllLib, _T("?GXOpenInput@@YAHXZ"));
1200 if(GXGetDefaultKeys_)
1201 gxKeyList = (*GXGetDefaultKeys_)(GX_LANDSCAPEKEYS);
1204 #endif /* TARGET_HOST_WINCE */
1209 * If the window is visible, then it is the user manually resizing it.
1210 * If it is not, then it is the system sending us a dummy resize with
1211 * zero dimensions on a "glutIconifyWindow" call.
1213 if( window->State.Visible )
1215 window->State.NeedToResize = GL_TRUE;
1216 #if TARGET_HOST_WINCE
1217 window->State.Width = HIWORD(lParam);
1218 window->State.Height = LOWORD(lParam);
1220 window->State.Width = LOWORD(lParam);
1221 window->State.Height = HIWORD(lParam);
1222 #endif /* TARGET_HOST_WINCE */
1228 /* printf("WM_SETFOCUS: %p\n", window ); */
1229 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1233 if (LOWORD(wParam) != WA_INACTIVE)
1235 /* printf("WM_ACTIVATE: fgSetCursor( %p, %d)\n", window,
1236 window->State.Cursor ); */
1237 fgSetCursor( window, window->State.Cursor );
1240 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1245 /* printf ( "Cursor event %x %x %x %x\n", window, window->State.Cursor, lParam, wParam ) ; */
1246 if( LOWORD( lParam ) == HTCLIENT )
1247 fgSetCursor ( window, window->State.Cursor ) ;
1249 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1253 window->State.Visible = GL_TRUE;
1254 window->State.Redisplay = GL_TRUE;
1258 /* Turn on the visibility in case it was turned off somehow */
1259 window->State.Visible = GL_TRUE;
1260 BeginPaint( hWnd, &ps );
1261 fghRedrawWindow( window );
1262 EndPaint( hWnd, &ps );
1266 fgDestroyWindow ( window );
1267 if ( fgState.ActionOnWindowClose != GLUT_ACTION_CONTINUE_EXECUTION )
1273 * The window already got destroyed, so don't bother with it.
1277 /* XXX For a future patch: we need a mouse entry event. Unfortunately Windows
1278 * XXX doesn't give us one, so we will probably need a "MouseInWindow" flag in
1279 * XXX the SFG_Window structure. Set it to true to begin with and then have the
1280 * XXX WM_MOUSELEAVE code set it to false. Then when we get a WM_MOUSEMOVE event,
1281 * XXX if the flag is false we invoke the Entry callback and set the flag to true.
1283 case 0x02a2: /* This is the message we get when the mouse is leaving the window */
1284 if( window->IsMenu &&
1285 window->ActiveMenu && window->ActiveMenu->IsActive )
1286 fgUpdateMenuHighlight( window->ActiveMenu );
1288 INVOKE_WCB( *window, Entry, ( GLUT_LEFT ) );
1293 #if TARGET_HOST_WINCE
1294 window->State.MouseX = 320-HIWORD( lParam );
1295 window->State.MouseY = LOWORD( lParam );
1297 window->State.MouseX = LOWORD( lParam );
1298 window->State.MouseY = HIWORD( lParam );
1299 #endif /* TARGET_HOST_WINCE */
1300 /* Restrict to [-32768, 32767] to match X11 behaviour */
1301 /* See comment in "freeglut_developer" mailing list 10/4/04 */
1302 if ( window->State.MouseX > 32767 ) window->State.MouseX -= 65536;
1303 if ( window->State.MouseY > 32767 ) window->State.MouseY -= 65536;
1305 if ( window->ActiveMenu )
1307 fgUpdateMenuHighlight( window->ActiveMenu );
1311 fgState.Modifiers = fghGetWin32Modifiers( );
1313 if( ( wParam & MK_LBUTTON ) ||
1314 ( wParam & MK_MBUTTON ) ||
1315 ( wParam & MK_RBUTTON ) )
1316 INVOKE_WCB( *window, Motion, ( window->State.MouseX,
1317 window->State.MouseY ) );
1319 INVOKE_WCB( *window, Passive, ( window->State.MouseX,
1320 window->State.MouseY ) );
1322 fgState.Modifiers = 0xffffffff;
1326 case WM_LBUTTONDOWN:
1327 case WM_MBUTTONDOWN:
1328 case WM_RBUTTONDOWN:
1333 GLboolean pressed = GL_TRUE;
1336 #if TARGET_HOST_WINCE
1337 window->State.MouseX = 320-HIWORD( lParam );
1338 window->State.MouseY = LOWORD( lParam );
1340 window->State.MouseX = LOWORD( lParam );
1341 window->State.MouseY = HIWORD( lParam );
1342 #endif /* TARGET_HOST_WINCE */
1344 /* Restrict to [-32768, 32767] to match X11 behaviour */
1345 /* See comment in "freeglut_developer" mailing list 10/4/04 */
1346 if ( window->State.MouseX > 32767 ) window->State.MouseX -= 65536;
1347 if ( window->State.MouseY > 32767 ) window->State.MouseY -= 65536;
1351 case WM_LBUTTONDOWN:
1353 button = GLUT_LEFT_BUTTON;
1355 case WM_MBUTTONDOWN:
1357 button = GLUT_MIDDLE_BUTTON;
1359 case WM_RBUTTONDOWN:
1361 button = GLUT_RIGHT_BUTTON;
1365 button = GLUT_LEFT_BUTTON;
1369 button = GLUT_MIDDLE_BUTTON;
1373 button = GLUT_RIGHT_BUTTON;
1381 #if !TARGET_HOST_WINCE
1382 if( GetSystemMetrics( SM_SWAPBUTTON ) )
1384 if( button == GLUT_LEFT_BUTTON )
1385 button = GLUT_RIGHT_BUTTON;
1387 if( button == GLUT_RIGHT_BUTTON )
1388 button = GLUT_LEFT_BUTTON;
1390 #endif /* !TARGET_HOST_WINCE */
1393 return DefWindowProc( hWnd, uMsg, lParam, wParam );
1396 * Do not execute the application's mouse callback if a menu
1397 * is hooked to this button. In that case an appropriate
1398 * private call should be generated.
1400 if( fgCheckActiveMenu( window, button, pressed,
1401 window->State.MouseX, window->State.MouseY ) )
1404 /* Set capture so that the window captures all the mouse messages */
1406 * XXX - Multiple button support: Under X11, the mouse is not released
1407 * XXX - from the window until all buttons have been released, even if the
1408 * XXX - user presses a button in another window. This will take more
1409 * XXX - code changes than I am up to at the moment (10/5/04). The present
1410 * XXX - is a 90 percent solution.
1412 if ( pressed == GL_TRUE )
1413 SetCapture ( window->Window.Handle ) ;
1417 if( ! FETCH_WCB( *window, Mouse ) )
1420 fgSetWindow( window );
1421 fgState.Modifiers = fghGetWin32Modifiers( );
1426 pressed ? GLUT_DOWN : GLUT_UP,
1427 window->State.MouseX,
1428 window->State.MouseY
1432 fgState.Modifiers = 0xffffffff;
1437 /* Should be WM_MOUSEWHEEL but my compiler doesn't recognize it */
1440 * XXX THIS IS SPECULATIVE -- John Fay, 10/2/03
1441 * XXX Should use WHEEL_DELTA instead of 120
1443 int wheel_number = LOWORD( wParam );
1444 short ticks = ( short )HIWORD( wParam ) / 120;
1454 * The mouse cursor has moved. Remember the new mouse cursor's position
1456 /* window->State.MouseX = LOWORD( lParam ); */
1457 /* Need to adjust by window position, */
1458 /* window->State.MouseY = HIWORD( lParam ); */
1459 /* change "lParam" to other parameter */
1461 if( ! FETCH_WCB( *window, MouseWheel ) &&
1462 ! FETCH_WCB( *window, Mouse ) )
1465 fgSetWindow( window );
1466 fgState.Modifiers = fghGetWin32Modifiers( );
1469 if( FETCH_WCB( *window, MouseWheel ) )
1470 INVOKE_WCB( *window, MouseWheel,
1473 window->State.MouseX,
1474 window->State.MouseY
1477 else /* No mouse wheel, call the mouse button callback twice */
1480 * XXX The below assumes that you have no more than 3 mouse
1481 * XXX buttons. Sorry.
1483 int button = wheel_number*2 + 4;
1486 INVOKE_WCB( *window, Mouse,
1487 ( button, GLUT_DOWN,
1488 window->State.MouseX, window->State.MouseY )
1490 INVOKE_WCB( *window, Mouse,
1492 window->State.MouseX, window->State.MouseX )
1496 fgState.Modifiers = 0xffffffff;
1506 if( ( fgState.KeyRepeat==GLUT_KEY_REPEAT_OFF || window->State.IgnoreKeyRepeat==GL_TRUE ) && (HIWORD(lParam) & KF_REPEAT) )
1510 * Remember the current modifiers state. This is done here in order
1511 * to make sure the VK_DELETE keyboard callback is executed properly.
1513 fgState.Modifiers = fghGetWin32Modifiers( );
1515 GetCursorPos( &mouse_pos );
1516 ScreenToClient( window->Window.Handle, &mouse_pos );
1518 window->State.MouseX = mouse_pos.x;
1519 window->State.MouseY = mouse_pos.y;
1521 /* Convert the Win32 keystroke codes to GLUTtish way */
1522 # define KEY(a,b) case a: keypress = b; break;
1526 KEY( VK_F1, GLUT_KEY_F1 );
1527 KEY( VK_F2, GLUT_KEY_F2 );
1528 KEY( VK_F3, GLUT_KEY_F3 );
1529 KEY( VK_F4, GLUT_KEY_F4 );
1530 KEY( VK_F5, GLUT_KEY_F5 );
1531 KEY( VK_F6, GLUT_KEY_F6 );
1532 KEY( VK_F7, GLUT_KEY_F7 );
1533 KEY( VK_F8, GLUT_KEY_F8 );
1534 KEY( VK_F9, GLUT_KEY_F9 );
1535 KEY( VK_F10, GLUT_KEY_F10 );
1536 KEY( VK_F11, GLUT_KEY_F11 );
1537 KEY( VK_F12, GLUT_KEY_F12 );
1538 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP );
1539 KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1540 KEY( VK_HOME, GLUT_KEY_HOME );
1541 KEY( VK_END, GLUT_KEY_END );
1542 KEY( VK_LEFT, GLUT_KEY_LEFT );
1543 KEY( VK_UP, GLUT_KEY_UP );
1544 KEY( VK_RIGHT, GLUT_KEY_RIGHT );
1545 KEY( VK_DOWN, GLUT_KEY_DOWN );
1546 KEY( VK_INSERT, GLUT_KEY_INSERT );
1549 /* The delete key should be treated as an ASCII keypress: */
1550 INVOKE_WCB( *window, Keyboard,
1551 ( 127, window->State.MouseX, window->State.MouseY )
1555 #if TARGET_HOST_WINCE
1556 if(!(lParam & 0x40000000)) /* Prevent auto-repeat */
1558 if(wParam==(unsigned)gxKeyList.vkRight)
1559 keypress = GLUT_KEY_RIGHT;
1560 else if(wParam==(unsigned)gxKeyList.vkLeft)
1561 keypress = GLUT_KEY_LEFT;
1562 else if(wParam==(unsigned)gxKeyList.vkUp)
1563 keypress = GLUT_KEY_UP;
1564 else if(wParam==(unsigned)gxKeyList.vkDown)
1565 keypress = GLUT_KEY_DOWN;
1566 else if(wParam==(unsigned)gxKeyList.vkA)
1567 keypress = GLUT_KEY_F1;
1568 else if(wParam==(unsigned)gxKeyList.vkB)
1569 keypress = GLUT_KEY_F2;
1570 else if(wParam==(unsigned)gxKeyList.vkC)
1571 keypress = GLUT_KEY_F3;
1572 else if(wParam==(unsigned)gxKeyList.vkStart)
1573 keypress = GLUT_KEY_F4;
1577 if( keypress != -1 )
1578 INVOKE_WCB( *window, Special,
1580 window->State.MouseX, window->State.MouseY )
1583 fgState.Modifiers = 0xffffffff;
1594 * Remember the current modifiers state. This is done here in order
1595 * to make sure the VK_DELETE keyboard callback is executed properly.
1597 fgState.Modifiers = fghGetWin32Modifiers( );
1599 GetCursorPos( &mouse_pos );
1600 ScreenToClient( window->Window.Handle, &mouse_pos );
1602 window->State.MouseX = mouse_pos.x;
1603 window->State.MouseY = mouse_pos.y;
1606 * Convert the Win32 keystroke codes to GLUTtish way.
1607 * "KEY(a,b)" was defined under "WM_KEYDOWN"
1612 KEY( VK_F1, GLUT_KEY_F1 );
1613 KEY( VK_F2, GLUT_KEY_F2 );
1614 KEY( VK_F3, GLUT_KEY_F3 );
1615 KEY( VK_F4, GLUT_KEY_F4 );
1616 KEY( VK_F5, GLUT_KEY_F5 );
1617 KEY( VK_F6, GLUT_KEY_F6 );
1618 KEY( VK_F7, GLUT_KEY_F7 );
1619 KEY( VK_F8, GLUT_KEY_F8 );
1620 KEY( VK_F9, GLUT_KEY_F9 );
1621 KEY( VK_F10, GLUT_KEY_F10 );
1622 KEY( VK_F11, GLUT_KEY_F11 );
1623 KEY( VK_F12, GLUT_KEY_F12 );
1624 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP );
1625 KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1626 KEY( VK_HOME, GLUT_KEY_HOME );
1627 KEY( VK_END, GLUT_KEY_END );
1628 KEY( VK_LEFT, GLUT_KEY_LEFT );
1629 KEY( VK_UP, GLUT_KEY_UP );
1630 KEY( VK_RIGHT, GLUT_KEY_RIGHT );
1631 KEY( VK_DOWN, GLUT_KEY_DOWN );
1632 KEY( VK_INSERT, GLUT_KEY_INSERT );
1635 /* The delete key should be treated as an ASCII keypress: */
1636 INVOKE_WCB( *window, KeyboardUp,
1637 ( 127, window->State.MouseX, window->State.MouseY )
1643 #if !TARGET_HOST_WINCE
1647 GetKeyboardState( state );
1649 if( ToAscii( wParam, 0, state, code, 0 ) == 1 )
1652 INVOKE_WCB( *window, KeyboardUp,
1654 window->State.MouseX, window->State.MouseY )
1656 #endif /* !TARGET_HOST_WINCE */
1660 if( keypress != -1 )
1661 INVOKE_WCB( *window, SpecialUp,
1663 window->State.MouseX, window->State.MouseY )
1666 fgState.Modifiers = 0xffffffff;
1673 if( (fgState.KeyRepeat==GLUT_KEY_REPEAT_OFF || window->State.IgnoreKeyRepeat==GL_TRUE) && (HIWORD(lParam) & KF_REPEAT) )
1676 fgState.Modifiers = fghGetWin32Modifiers( );
1677 INVOKE_WCB( *window, Keyboard,
1679 window->State.MouseX, window->State.MouseY )
1681 fgState.Modifiers = 0xffffffff;
1685 case WM_CAPTURECHANGED:
1686 /* User has finished resizing the window, force a redraw */
1687 INVOKE_WCB( *window, Display, ( ) );
1689 /*lRet = DefWindowProc( hWnd, uMsg, wParam, lParam ); */
1692 /* Other messages that I have seen and which are not handled already */
1693 case WM_SETTEXT: /* 0x000c */
1694 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1695 /* Pass it on to "DefWindowProc" to set the window text */
1698 case WM_GETTEXT: /* 0x000d */
1699 /* Ideally we would copy the title of the window into "lParam" */
1700 /* strncpy ( (char *)lParam, "Window Title", wParam );
1701 lRet = ( wParam > 12 ) ? 12 : wParam; */
1702 /* the number of characters copied */
1703 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1706 case WM_GETTEXTLENGTH: /* 0x000e */
1707 /* Ideally we would get the length of the title of the window */
1709 /* the number of characters in "Window Title\0" (see above) */
1712 case WM_ERASEBKGND: /* 0x0014 */
1713 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1716 #if !TARGET_HOST_WINCE
1717 case WM_SYNCPAINT: /* 0x0088 */
1718 /* Another window has moved, need to update this one */
1719 window->State.Redisplay = GL_TRUE;
1720 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1721 /* Help screen says this message must be passed to "DefWindowProc" */
1724 case WM_NCPAINT: /* 0x0085 */
1725 /* Need to update the border of this window */
1726 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1727 /* Pass it on to "DefWindowProc" to repaint a standard border */
1730 case WM_SYSCOMMAND : /* 0x0112 */
1733 * We have received a system command message. Try to act on it.
1734 * The commands are passed in through the "wParam" parameter:
1735 * The least significant digit seems to be which edge of the window
1736 * is being used for a resize event:
1740 * Congratulations and thanks to Richard Rauch for figuring this out..
1742 switch ( wParam & 0xfff0 )
1751 /* User has clicked on the "-" to minimize the window */
1752 /* Turn off the visibility */
1753 window->State.Visible = GL_FALSE ;
1760 case SC_NEXTWINDOW :
1763 case SC_PREVWINDOW :
1767 /* Followed very closely by a WM_CLOSE message */
1791 case SC_SCREENSAVE :
1799 fgWarning( "Unknown wParam type 0x%x", wParam );
1804 #endif /* !TARGET_HOST_WINCE */
1806 /* We need to pass the message on to the operating system as well */
1807 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1811 /* Handle unhandled messages */
1812 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1820 /*** END OF FILE ***/