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))
35 # define VFPRINTF(s,f,a) _doprnt((f),(a),(s))
37 # define VFPRINTF(s,f,a)
42 typedef struct GXDisplayProperties GXDisplayProperties;
43 typedef struct GXKeyList GXKeyList;
46 typedef struct GXKeyList (*GXGETDEFAULTKEYS)(int);
47 typedef int (*GXOPENINPUT)();
49 GXGETDEFAULTKEYS GXGetDefaultKeys_ = NULL;
50 GXOPENINPUT GXOpenInput_ = NULL;
52 struct GXKeyList gxKeyList;
57 * Try to get the maximum value allowed for ints, falling back to the minimum
58 * guaranteed by ISO C99 if there is no suitable header.
64 # define INT_MAX 32767
68 #define MIN(a,b) (((a)<(b)) ? (a) : (b))
73 * TODO BEFORE THE STABLE RELEASE:
75 * There are some issues concerning window redrawing under X11, and maybe
76 * some events are not handled. The Win32 version lacks some more features,
77 * but seems acceptable for not demanding purposes.
79 * Need to investigate why the X11 version breaks out with an error when
80 * closing a window (using the window manager, not glutDestroyWindow)...
83 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
86 * Handle a window configuration change. When no reshape
87 * callback is hooked, the viewport size is updated to
88 * match the new window size.
90 static void fghReshapeWindow ( SFG_Window *window, int width, int height )
92 SFG_Window *current_window = fgStructure.CurrentWindow;
94 freeglut_return_if_fail( window != NULL );
97 #if TARGET_HOST_UNIX_X11
99 XResizeWindow( fgDisplay.Display, window->Window.Handle,
101 XFlush( fgDisplay.Display ); /* XXX Shouldn't need this */
103 #elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
105 #if !TARGET_HOST_WINCE
111 * For windowed mode, get the current position of the
112 * window and resize taking the size of the frame
113 * decorations into account.
116 /* "GetWindowRect" returns the pixel coordinates of the outside of the window */
117 GetWindowRect( window->Window.Handle, &winRect );
123 if ( window->Parent == NULL )
125 if ( ! window->IsMenu && !window->State.IsGameMode )
127 w += GetSystemMetrics( SM_CXSIZEFRAME ) * 2;
128 h += GetSystemMetrics( SM_CYSIZEFRAME ) * 2 +
129 GetSystemMetrics( SM_CYCAPTION );
135 GetWindowRect( window->Parent->Window.Handle, &parentRect );
136 x -= parentRect.left + GetSystemMetrics( SM_CXSIZEFRAME ) * 2;
137 y -= parentRect.top + GetSystemMetrics( SM_CYSIZEFRAME ) * 2 +
138 GetSystemMetrics( SM_CYCAPTION );
142 * SWP_NOACTIVATE Do not activate the window
143 * SWP_NOOWNERZORDER Do not change position in z-order
144 * SWP_NOSENDCHANGING Supress WM_WINDOWPOSCHANGING message
145 * SWP_NOZORDER Retains the current Z order (ignore 2nd param)
148 SetWindowPos( window->Window.Handle,
151 SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSENDCHANGING |
155 #endif /* TARGET_HOST_WINCE */
158 * XXX Should update {window->State.OldWidth, window->State.OldHeight}
159 * XXX to keep in lockstep with UNIX_X11 code.
161 if( FETCH_WCB( *window, Reshape ) )
162 INVOKE_WCB( *window, Reshape, ( width, height ) );
165 fgSetWindow( window );
166 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 window->State.OldWidth = width;
592 window->State.OldHeight = height;
593 if( FETCH_WCB( *window, Reshape ) )
594 INVOKE_WCB( *window, Reshape, ( width, height ) );
597 fgSetWindow( window );
598 glViewport( 0, 0, width, height );
600 glutPostRedisplay( );
607 * This is sent to confirm the XDestroyWindow call.
609 * XXX WHY is this commented out? Should we re-enable it?
611 /* fgAddToWindowDestroyList ( window ); */
616 * We are too dumb to process partial exposes...
618 * XXX Well, we could do it. However, it seems to only
619 * XXX be potentially useful for single-buffered (since
620 * XXX double-buffered does not respect viewport when we
621 * XXX do a buffer-swap).
624 if( event.xexpose.count == 0 )
626 GETWINDOW( xexpose );
627 fgSetWindow( window );
628 glutPostRedisplay( );
635 * If we never do anything with this, can we just not ask to
636 * get these messages?
642 * Have the client's keyboard knowledge updated (xlib.ps,
643 * page 206, says that's a good thing to do)
645 XRefreshKeyboardMapping( (XMappingEvent *) &event );
648 case VisibilityNotify:
650 GETWINDOW( xvisibility );
652 * XXX INVOKE_WCB() does this check for us.
654 if( ! FETCH_WCB( *window, WindowStatus ) )
656 fgSetWindow( window );
659 * Sending this event, the X server can notify us that the window
660 * has just acquired one of the three possible visibility states:
661 * VisibilityUnobscured, VisibilityPartiallyObscured or
662 * VisibilityFullyObscured
664 switch( event.xvisibility.state )
666 case VisibilityUnobscured:
667 INVOKE_WCB( *window, WindowStatus, ( GLUT_FULLY_RETAINED ) );
668 window->State.Visible = GL_TRUE;
671 case VisibilityPartiallyObscured:
672 INVOKE_WCB( *window, WindowStatus,
673 ( GLUT_PARTIALLY_RETAINED ) );
674 window->State.Visible = GL_TRUE;
677 case VisibilityFullyObscured:
678 INVOKE_WCB( *window, WindowStatus, ( GLUT_FULLY_COVERED ) );
679 window->State.Visible = GL_FALSE;
683 fgWarning( "Unknown X visibility state: %d",
684 event.xvisibility.state );
692 GETWINDOW( xcrossing );
693 GETMOUSE( xcrossing );
694 INVOKE_WCB( *window, Entry, ( ( EnterNotify == event.type ) ?
701 GETWINDOW( xmotion );
704 if( window->ActiveMenu )
706 if( window == window->ActiveMenu->ParentWindow )
708 window->ActiveMenu->Window->State.MouseX =
709 event.xmotion.x_root - window->ActiveMenu->X;
710 window->ActiveMenu->Window->State.MouseY =
711 event.xmotion.y_root - window->ActiveMenu->Y;
713 window->ActiveMenu->Window->State.Redisplay = GL_TRUE ;
714 fgSetWindow( window->ActiveMenu->ParentWindow );
720 * XXX For more than 5 buttons, just check {event.xmotion.state},
721 * XXX rather than a host of bit-masks? Or maybe we need to
722 * XXX track ButtonPress/ButtonRelease events in our own
725 #define BUTTON_MASK \
726 ( Button1Mask | Button2Mask | Button3Mask | Button4Mask | Button5Mask )
727 if ( event.xmotion.state & BUTTON_MASK )
728 INVOKE_WCB( *window, Motion, ( event.xmotion.x,
731 INVOKE_WCB( *window, Passive, ( event.xmotion.x,
739 GLboolean pressed = GL_TRUE;
742 if( event.type == ButtonRelease )
746 * A mouse button has been pressed or released. Traditionally,
747 * break if the window was found within the freeglut structures.
749 GETWINDOW( xbutton );
753 * An X button (at least in XFree86) is numbered from 1.
754 * A GLUT button is numbered from 0.
755 * Old GLUT passed through buttons other than just the first
756 * three, though it only gave symbolic names and official
757 * support to the first three.
759 button = event.xbutton.button - 1;
762 * Do not execute the application's mouse callback if a menu
763 * is hooked to this button. In that case an appropriate
764 * private call should be generated.
766 if( fgCheckActiveMenu( window, button, pressed,
767 event.xbutton.x_root, event.xbutton.y_root ) )
771 * Check if there is a mouse or mouse wheel callback hooked to the
774 if( ! FETCH_WCB( *window, Mouse ) &&
775 ! FETCH_WCB( *window, MouseWheel ) )
778 fgState.Modifiers = fghGetXModifiers( &event );
780 /* Finally execute the mouse or mouse wheel callback */
781 if( ( button < glutDeviceGet ( GLUT_NUM_MOUSE_BUTTONS ) ) || ( ! FETCH_WCB( *window, MouseWheel ) ) )
782 INVOKE_WCB( *window, Mouse, ( button,
783 pressed ? GLUT_DOWN : GLUT_UP,
790 * Map 4 and 5 to wheel zero; EVEN to +1, ODD to -1
791 * " 6 and 7 " " one; ...
793 * XXX This *should* be behind some variables/macros,
794 * XXX since the order and numbering isn't certain
795 * XXX See XFree86 configuration docs (even back in the
796 * XXX 3.x days, and especially with 4.x).
798 * XXX Note that {button} has already been decremeted
799 * XXX in mapping from X button numbering to GLUT.
801 int wheel_number = (button - glutDeviceGet ( GLUT_NUM_MOUSE_BUTTONS )) / 2;
807 INVOKE_WCB( *window, MouseWheel, ( wheel_number,
814 /* Trash the modifiers state */
815 fgState.Modifiers = 0xffffffff;
822 FGCBKeyboard keyboard_cb;
823 FGCBSpecial special_cb;
828 /* Detect auto repeated keys, if configured globally or per-window */
830 if ( fgState.KeyRepeat==GLUT_KEY_REPEAT_OFF || window->State.IgnoreKeyRepeat==GL_TRUE )
832 if (event.type==KeyRelease)
835 * Look at X11 keystate to detect repeat mode.
836 * While X11 says the key is actually held down, we'll ignore KeyRelease/KeyPress pairs.
840 XQueryKeymap( fgDisplay.Display, keys ); /* Look at X11 keystate to detect repeat mode */
842 if ( event.xkey.keycode<256 ) /* XQueryKeymap is limited to 256 keycodes */
844 if ( keys[event.xkey.keycode>>3] & (1<<(event.xkey.keycode%8)) )
845 window->State.KeyRepeating = GL_TRUE;
847 window->State.KeyRepeating = GL_FALSE;
852 window->State.KeyRepeating = GL_FALSE;
854 /* Cease processing this event if it is auto repeated */
856 if (window->State.KeyRepeating)
859 if( event.type == KeyPress )
861 keyboard_cb = (FGCBKeyboard)( FETCH_WCB( *window, Keyboard ));
862 special_cb = (FGCBSpecial) ( FETCH_WCB( *window, Special ));
866 keyboard_cb = (FGCBKeyboard)( FETCH_WCB( *window, KeyboardUp ));
867 special_cb = (FGCBSpecial) ( FETCH_WCB( *window, SpecialUp ));
870 /* Is there a keyboard/special callback hooked for this window? */
871 if( keyboard_cb || special_cb )
873 XComposeStatus composeStatus;
874 char asciiCode[ 32 ];
878 /* Check for the ASCII/KeySym codes associated with the event: */
879 len = XLookupString( &event.xkey, asciiCode, sizeof(asciiCode),
880 &keySym, &composeStatus
883 /* GLUT API tells us to have two separate callbacks... */
886 /* ...one for the ASCII translateable keypresses... */
889 fgSetWindow( window );
890 fgState.Modifiers = fghGetXModifiers( &event );
891 keyboard_cb( asciiCode[ 0 ],
892 event.xkey.x, event.xkey.y
894 fgState.Modifiers = 0xffffffff;
902 * ...and one for all the others, which need to be
903 * translated to GLUT_KEY_Xs...
907 case XK_F1: special = GLUT_KEY_F1; break;
908 case XK_F2: special = GLUT_KEY_F2; break;
909 case XK_F3: special = GLUT_KEY_F3; break;
910 case XK_F4: special = GLUT_KEY_F4; break;
911 case XK_F5: special = GLUT_KEY_F5; break;
912 case XK_F6: special = GLUT_KEY_F6; break;
913 case XK_F7: special = GLUT_KEY_F7; break;
914 case XK_F8: special = GLUT_KEY_F8; break;
915 case XK_F9: special = GLUT_KEY_F9; break;
916 case XK_F10: special = GLUT_KEY_F10; break;
917 case XK_F11: special = GLUT_KEY_F11; break;
918 case XK_F12: special = GLUT_KEY_F12; break;
920 case XK_Left: special = GLUT_KEY_LEFT; break;
921 case XK_Right: special = GLUT_KEY_RIGHT; break;
922 case XK_Up: special = GLUT_KEY_UP; break;
923 case XK_Down: special = GLUT_KEY_DOWN; break;
926 case XK_Prior: special = GLUT_KEY_PAGE_UP; break;
928 case XK_Next: special = GLUT_KEY_PAGE_DOWN; break;
930 case XK_Home: special = GLUT_KEY_HOME; break;
932 case XK_End: special = GLUT_KEY_END; break;
934 case XK_Insert: special = GLUT_KEY_INSERT; break;
938 * Execute the callback (if one has been specified),
939 * given that the special code seems to be valid...
941 if( special_cb && (special != -1) )
943 fgSetWindow( window );
944 fgState.Modifiers = fghGetXModifiers( &event );
945 special_cb( special, event.xkey.x, event.xkey.y );
946 fgState.Modifiers = 0xffffffff;
954 break; /* XXX Should disable this event */
957 fgWarning ("Unknown X event type: %d", event.type);
962 #elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
966 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutMainLoopEvent" );
968 while( PeekMessage( &stMsg, NULL, 0, 0, PM_NOREMOVE ) )
970 if( GetMessage( &stMsg, NULL, 0, 0 ) == 0 )
972 if( fgState.ActionOnWindowClose == GLUT_ACTION_EXIT )
977 else if( fgState.ActionOnWindowClose == GLUT_ACTION_GLUTMAINLOOP_RETURNS )
978 fgState.ExecState = GLUT_EXEC_STATE_STOP;
983 TranslateMessage( &stMsg );
984 DispatchMessage( &stMsg );
988 if( fgState.Timers.First )
990 fghCheckJoystickPolls( );
997 * Enters the freeglut processing loop.
998 * Stays until the "ExecState" changes to "GLUT_EXEC_STATE_STOP".
1000 void FGAPIENTRY glutMainLoop( void )
1004 #if TARGET_HOST_WIN32 || TARGET_HOST_WINCE
1005 SFG_Window *window = (SFG_Window *)fgStructure.Windows.First ;
1008 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutMainLoop" );
1010 #if TARGET_HOST_WIN32 || TARGET_HOST_WINCE
1012 * Processing before the main loop: If there is a window which is open and
1013 * which has a visibility callback, call it. I know this is an ugly hack,
1014 * but I'm not sure what else to do about it. Ideally we should leave
1015 * something uninitialized in the create window code and initialize it in
1016 * the main loop, and have that initialization create a "WM_ACTIVATE"
1017 * message. Then we would put the visibility callback code in the
1018 * "case WM_ACTIVATE" block below. - John Fay -- 10/24/02
1022 if ( FETCH_WCB( *window, Visibility ) )
1024 SFG_Window *current_window = fgStructure.CurrentWindow ;
1026 INVOKE_WCB( *window, Visibility, ( window->State.Visible ) );
1027 fgSetWindow( current_window );
1030 window = (SFG_Window *)window->Node.Next ;
1034 fgState.ExecState = GLUT_EXEC_STATE_RUNNING ;
1035 while( fgState.ExecState == GLUT_EXEC_STATE_RUNNING )
1039 glutMainLoopEvent( );
1041 * Step through the list of windows, seeing if there are any
1042 * that are not menus
1044 for( window = ( SFG_Window * )fgStructure.Windows.First;
1046 window = ( SFG_Window * )window->Node.Next )
1047 if ( ! ( window->IsMenu ) )
1051 fgState.ExecState = GLUT_EXEC_STATE_STOP;
1054 if( fgState.IdleCallback )
1055 fgState.IdleCallback( );
1057 fghSleepForEvents( );
1062 * When this loop terminates, destroy the display, state and structure
1063 * of a freeglut session, so that another glutInit() call can happen
1065 * Save the "ActionOnWindowClose" because "fgDeinitialize" resets it.
1067 action = fgState.ActionOnWindowClose;
1069 if( action == GLUT_ACTION_EXIT )
1074 * Leaves the freeglut processing loop.
1076 void FGAPIENTRY glutLeaveMainLoop( void )
1078 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLeaveMainLoop" );
1079 fgState.ExecState = GLUT_EXEC_STATE_STOP ;
1083 #if TARGET_HOST_WIN32 || TARGET_HOST_WINCE
1085 * Determine a GLUT modifer mask based on MS-WINDOWS system info.
1087 static int fghGetWin32Modifiers (void)
1090 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1091 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1092 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1093 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1094 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1095 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1099 * The window procedure for handling Win32 events
1101 LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam,
1108 FREEGLUT_INTERNAL_ERROR_EXIT_IF_NOT_INITIALISED ( "Event Handler" ) ;
1110 window = fgWindowByHandle( hWnd );
1112 if ( ( window == NULL ) && ( uMsg != WM_CREATE ) )
1113 return DefWindowProc( hWnd, uMsg, wParam, lParam );
1115 /* printf ( "Window %3d message <%04x> %12d %12d\n", window?window->ID:0,
1116 uMsg, wParam, lParam ); */
1120 /* The window structure is passed as the creation structure paramter... */
1121 window = (SFG_Window *) (((LPCREATESTRUCT) lParam)->lpCreateParams);
1122 FREEGLUT_INTERNAL_ERROR_EXIT ( ( window != NULL ), "Cannot create window",
1125 window->Window.Handle = hWnd;
1126 window->Window.Device = GetDC( hWnd );
1127 if( window->IsMenu )
1129 unsigned int current_DisplayMode = fgState.DisplayMode;
1130 fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH;
1131 #if !TARGET_HOST_WINCE
1132 fgSetupPixelFormat( window, GL_FALSE, PFD_MAIN_PLANE );
1134 fgState.DisplayMode = current_DisplayMode;
1136 if( fgStructure.MenuContext )
1137 wglMakeCurrent( window->Window.Device,
1138 fgStructure.MenuContext->Context
1142 fgStructure.MenuContext =
1143 (SFG_MenuContext *)malloc( sizeof(SFG_MenuContext) );
1144 fgStructure.MenuContext->Context =
1145 wglCreateContext( window->Window.Device );
1148 /* window->Window.Context = wglGetCurrentContext (); */
1149 window->Window.Context = wglCreateContext( window->Window.Device );
1153 #if !TARGET_HOST_WINCE
1154 fgSetupPixelFormat( window, GL_FALSE, PFD_MAIN_PLANE );
1157 if( ! fgState.UseCurrentContext )
1158 window->Window.Context =
1159 wglCreateContext( window->Window.Device );
1162 window->Window.Context = wglGetCurrentContext( );
1163 if( ! window->Window.Context )
1164 window->Window.Context =
1165 wglCreateContext( window->Window.Device );
1169 window->State.NeedToResize = GL_TRUE;
1170 window->State.Width = fgState.Size.X;
1171 window->State.Height = fgState.Size.Y;
1173 ReleaseDC( window->Window.Handle, window->Window.Device );
1175 #if TARGET_HOST_WINCE
1176 /* Take over button handling */
1178 HINSTANCE dxDllLib=LoadLibrary(_T("gx.dll"));
1181 GXGetDefaultKeys_=(GXGETDEFAULTKEYS)GetProcAddress(dxDllLib, _T("?GXGetDefaultKeys@@YA?AUGXKeyList@@H@Z"));
1182 GXOpenInput_=(GXOPENINPUT)GetProcAddress(dxDllLib, _T("?GXOpenInput@@YAHXZ"));
1187 if(GXGetDefaultKeys_)
1188 gxKeyList = (*GXGetDefaultKeys_)(GX_LANDSCAPEKEYS);
1191 #endif /* TARGET_HOST_WINCE */
1196 * If the window is visible, then it is the user manually resizing it.
1197 * If it is not, then it is the system sending us a dummy resize with
1198 * zero dimensions on a "glutIconifyWindow" call.
1200 if( window->State.Visible )
1202 window->State.NeedToResize = GL_TRUE;
1203 #if TARGET_HOST_WINCE
1204 window->State.Width = HIWORD(lParam);
1205 window->State.Height = LOWORD(lParam);
1207 window->State.Width = LOWORD(lParam);
1208 window->State.Height = HIWORD(lParam);
1209 #endif /* TARGET_HOST_WINCE */
1215 /* printf("WM_SETFOCUS: %p\n", window ); */
1216 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1220 if (LOWORD(wParam) != WA_INACTIVE)
1222 /* printf("WM_ACTIVATE: fgSetCursor( %p, %d)\n", window,
1223 window->State.Cursor ); */
1224 fgSetCursor( window, window->State.Cursor );
1227 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1232 /* printf ( "Cursor event %x %x %x %x\n", window, window->State.Cursor, lParam, wParam ) ; */
1233 if( LOWORD( lParam ) == HTCLIENT )
1234 fgSetCursor ( window, window->State.Cursor ) ;
1236 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1240 window->State.Visible = GL_TRUE;
1241 window->State.Redisplay = GL_TRUE;
1245 /* Turn on the visibility in case it was turned off somehow */
1246 window->State.Visible = GL_TRUE;
1247 BeginPaint( hWnd, &ps );
1248 fghRedrawWindow( window );
1249 EndPaint( hWnd, &ps );
1253 fgDestroyWindow ( window );
1254 if ( fgState.ActionOnWindowClose != GLUT_ACTION_CONTINUE_EXECUTION )
1260 * The window already got destroyed, so don't bother with it.
1264 /* XXX For a future patch: we need a mouse entry event. Unfortunately Windows
1265 * XXX doesn't give us one, so we will probably need a "MouseInWindow" flag in
1266 * XXX the SFG_Window structure. Set it to true to begin with and then have the
1267 * XXX WM_MOUSELEAVE code set it to false. Then when we get a WM_MOUSEMOVE event,
1268 * XXX if the flag is false we invoke the Entry callback and set the flag to true.
1270 case 0x02a2: /* This is the message we get when the mouse is leaving the window */
1271 INVOKE_WCB( *window, Entry, ( GLUT_LEFT ) );
1276 #if TARGET_HOST_WINCE
1277 window->State.MouseX = 320-HIWORD( lParam );
1278 window->State.MouseY = LOWORD( lParam );
1280 window->State.MouseX = LOWORD( lParam );
1281 window->State.MouseY = HIWORD( lParam );
1282 #endif /* TARGET_HOST_WINCE */
1283 /* Restrict to [-32768, 32767] to match X11 behaviour */
1284 /* See comment in "freeglut_developer" mailing list 10/4/04 */
1285 if ( window->State.MouseX > 32767 ) window->State.MouseX -= 65536;
1286 if ( window->State.MouseY > 32767 ) window->State.MouseY -= 65536;
1288 if ( window->ActiveMenu )
1290 window->State.Redisplay = GL_TRUE;
1291 fgSetWindow ( window->ActiveMenu->ParentWindow );
1295 fgState.Modifiers = fghGetWin32Modifiers( );
1297 if( ( wParam & MK_LBUTTON ) ||
1298 ( wParam & MK_MBUTTON ) ||
1299 ( wParam & MK_RBUTTON ) )
1300 INVOKE_WCB( *window, Motion, ( window->State.MouseX,
1301 window->State.MouseY ) );
1303 INVOKE_WCB( *window, Passive, ( window->State.MouseX,
1304 window->State.MouseY ) );
1306 fgState.Modifiers = 0xffffffff;
1310 case WM_LBUTTONDOWN:
1311 case WM_MBUTTONDOWN:
1312 case WM_RBUTTONDOWN:
1317 GLboolean pressed = GL_TRUE;
1320 #if TARGET_HOST_WINCE
1321 window->State.MouseX = 320-HIWORD( lParam );
1322 window->State.MouseY = LOWORD( lParam );
1324 window->State.MouseX = LOWORD( lParam );
1325 window->State.MouseY = HIWORD( lParam );
1326 #endif /* TARGET_HOST_WINCE */
1328 /* Restrict to [-32768, 32767] to match X11 behaviour */
1329 /* See comment in "freeglut_developer" mailing list 10/4/04 */
1330 if ( window->State.MouseX > 32767 ) window->State.MouseX -= 65536;
1331 if ( window->State.MouseY > 32767 ) window->State.MouseY -= 65536;
1335 case WM_LBUTTONDOWN:
1337 button = GLUT_LEFT_BUTTON;
1339 case WM_MBUTTONDOWN:
1341 button = GLUT_MIDDLE_BUTTON;
1343 case WM_RBUTTONDOWN:
1345 button = GLUT_RIGHT_BUTTON;
1349 button = GLUT_LEFT_BUTTON;
1353 button = GLUT_MIDDLE_BUTTON;
1357 button = GLUT_RIGHT_BUTTON;
1365 #if !TARGET_HOST_WINCE
1366 if( GetSystemMetrics( SM_SWAPBUTTON ) )
1368 if( button == GLUT_LEFT_BUTTON )
1369 button = GLUT_RIGHT_BUTTON;
1371 if( button == GLUT_RIGHT_BUTTON )
1372 button = GLUT_LEFT_BUTTON;
1374 #endif /* !TARGET_HOST_WINCE */
1377 return DefWindowProc( hWnd, uMsg, lParam, wParam );
1380 * Do not execute the application's mouse callback if a menu
1381 * is hooked to this button. In that case an appropriate
1382 * private call should be generated.
1384 if( fgCheckActiveMenu( window, button, pressed,
1385 window->State.MouseX, window->State.MouseY ) )
1388 /* Set capture so that the window captures all the mouse messages */
1390 * XXX - Multiple button support: Under X11, the mouse is not released
1391 * XXX - from the window until all buttons have been released, even if the
1392 * XXX - user presses a button in another window. This will take more
1393 * XXX - code changes than I am up to at the moment (10/5/04). The present
1394 * XXX - is a 90 percent solution.
1396 if ( pressed == GL_TRUE )
1397 SetCapture ( window->Window.Handle ) ;
1401 if( ! FETCH_WCB( *window, Mouse ) )
1404 fgSetWindow( window );
1405 fgState.Modifiers = fghGetWin32Modifiers( );
1410 pressed ? GLUT_DOWN : GLUT_UP,
1411 window->State.MouseX,
1412 window->State.MouseY
1416 fgState.Modifiers = 0xffffffff;
1421 /* Should be WM_MOUSEWHEEL but my compiler doesn't recognize it */
1424 * XXX THIS IS SPECULATIVE -- John Fay, 10/2/03
1425 * XXX Should use WHEEL_DELTA instead of 120
1427 int wheel_number = LOWORD( wParam );
1428 short ticks = ( short )HIWORD( wParam ) / 120;
1438 * The mouse cursor has moved. Remember the new mouse cursor's position
1440 /* window->State.MouseX = LOWORD( lParam ); */
1441 /* Need to adjust by window position, */
1442 /* window->State.MouseY = HIWORD( lParam ); */
1443 /* change "lParam" to other parameter */
1445 if( ! FETCH_WCB( *window, MouseWheel ) &&
1446 ! FETCH_WCB( *window, Mouse ) )
1449 fgSetWindow( window );
1450 fgState.Modifiers = fghGetWin32Modifiers( );
1453 if( FETCH_WCB( *window, MouseWheel ) )
1454 INVOKE_WCB( *window, MouseWheel,
1457 window->State.MouseX,
1458 window->State.MouseY
1461 else /* No mouse wheel, call the mouse button callback twice */
1464 * XXX The below assumes that you have no more than 3 mouse
1465 * XXX buttons. Sorry.
1467 int button = wheel_number*2 + 4;
1470 INVOKE_WCB( *window, Mouse,
1471 ( button, GLUT_DOWN,
1472 window->State.MouseX, window->State.MouseY )
1474 INVOKE_WCB( *window, Mouse,
1476 window->State.MouseX, window->State.MouseX )
1480 fgState.Modifiers = 0xffffffff;
1490 if( ( fgState.KeyRepeat==GLUT_KEY_REPEAT_OFF || window->State.IgnoreKeyRepeat==GL_TRUE ) && (HIWORD(lParam) & KF_REPEAT) )
1494 * Remember the current modifiers state. This is done here in order
1495 * to make sure the VK_DELETE keyboard callback is executed properly.
1497 fgState.Modifiers = fghGetWin32Modifiers( );
1499 GetCursorPos( &mouse_pos );
1500 ScreenToClient( window->Window.Handle, &mouse_pos );
1502 window->State.MouseX = mouse_pos.x;
1503 window->State.MouseY = mouse_pos.y;
1505 /* Convert the Win32 keystroke codes to GLUTtish way */
1506 # define KEY(a,b) case a: keypress = b; break;
1510 KEY( VK_F1, GLUT_KEY_F1 );
1511 KEY( VK_F2, GLUT_KEY_F2 );
1512 KEY( VK_F3, GLUT_KEY_F3 );
1513 KEY( VK_F4, GLUT_KEY_F4 );
1514 KEY( VK_F5, GLUT_KEY_F5 );
1515 KEY( VK_F6, GLUT_KEY_F6 );
1516 KEY( VK_F7, GLUT_KEY_F7 );
1517 KEY( VK_F8, GLUT_KEY_F8 );
1518 KEY( VK_F9, GLUT_KEY_F9 );
1519 KEY( VK_F10, GLUT_KEY_F10 );
1520 KEY( VK_F11, GLUT_KEY_F11 );
1521 KEY( VK_F12, GLUT_KEY_F12 );
1522 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP );
1523 KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1524 KEY( VK_HOME, GLUT_KEY_HOME );
1525 KEY( VK_END, GLUT_KEY_END );
1526 KEY( VK_LEFT, GLUT_KEY_LEFT );
1527 KEY( VK_UP, GLUT_KEY_UP );
1528 KEY( VK_RIGHT, GLUT_KEY_RIGHT );
1529 KEY( VK_DOWN, GLUT_KEY_DOWN );
1530 KEY( VK_INSERT, GLUT_KEY_INSERT );
1533 /* The delete key should be treated as an ASCII keypress: */
1534 INVOKE_WCB( *window, Keyboard,
1535 ( 127, window->State.MouseX, window->State.MouseY )
1539 #if TARGET_HOST_WINCE
1540 if(!(lParam & 0x40000000)) /* Prevent auto-repeat */
1542 if(wParam==(unsigned)gxKeyList.vkRight)
1543 keypress = GLUT_KEY_RIGHT;
1544 else if(wParam==(unsigned)gxKeyList.vkLeft)
1545 keypress = GLUT_KEY_LEFT;
1546 else if(wParam==(unsigned)gxKeyList.vkUp)
1547 keypress = GLUT_KEY_UP;
1548 else if(wParam==(unsigned)gxKeyList.vkDown)
1549 keypress = GLUT_KEY_DOWN;
1550 else if(wParam==(unsigned)gxKeyList.vkA)
1551 keypress = GLUT_KEY_F1;
1552 else if(wParam==(unsigned)gxKeyList.vkB)
1553 keypress = GLUT_KEY_F2;
1554 else if(wParam==(unsigned)gxKeyList.vkC)
1555 keypress = GLUT_KEY_F3;
1556 else if(wParam==(unsigned)gxKeyList.vkStart)
1557 keypress = GLUT_KEY_F4;
1561 if( keypress != -1 )
1562 INVOKE_WCB( *window, Special,
1564 window->State.MouseX, window->State.MouseY )
1567 fgState.Modifiers = 0xffffffff;
1578 * Remember the current modifiers state. This is done here in order
1579 * to make sure the VK_DELETE keyboard callback is executed properly.
1581 fgState.Modifiers = fghGetWin32Modifiers( );
1583 GetCursorPos( &mouse_pos );
1584 ScreenToClient( window->Window.Handle, &mouse_pos );
1586 window->State.MouseX = mouse_pos.x;
1587 window->State.MouseY = mouse_pos.y;
1590 * Convert the Win32 keystroke codes to GLUTtish way.
1591 * "KEY(a,b)" was defined under "WM_KEYDOWN"
1596 KEY( VK_F1, GLUT_KEY_F1 );
1597 KEY( VK_F2, GLUT_KEY_F2 );
1598 KEY( VK_F3, GLUT_KEY_F3 );
1599 KEY( VK_F4, GLUT_KEY_F4 );
1600 KEY( VK_F5, GLUT_KEY_F5 );
1601 KEY( VK_F6, GLUT_KEY_F6 );
1602 KEY( VK_F7, GLUT_KEY_F7 );
1603 KEY( VK_F8, GLUT_KEY_F8 );
1604 KEY( VK_F9, GLUT_KEY_F9 );
1605 KEY( VK_F10, GLUT_KEY_F10 );
1606 KEY( VK_F11, GLUT_KEY_F11 );
1607 KEY( VK_F12, GLUT_KEY_F12 );
1608 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP );
1609 KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1610 KEY( VK_HOME, GLUT_KEY_HOME );
1611 KEY( VK_END, GLUT_KEY_END );
1612 KEY( VK_LEFT, GLUT_KEY_LEFT );
1613 KEY( VK_UP, GLUT_KEY_UP );
1614 KEY( VK_RIGHT, GLUT_KEY_RIGHT );
1615 KEY( VK_DOWN, GLUT_KEY_DOWN );
1616 KEY( VK_INSERT, GLUT_KEY_INSERT );
1619 /* The delete key should be treated as an ASCII keypress: */
1620 INVOKE_WCB( *window, KeyboardUp,
1621 ( 127, window->State.MouseX, window->State.MouseY )
1627 #if !TARGET_HOST_WINCE
1631 GetKeyboardState( state );
1633 if( ToAscii( wParam, 0, state, code, 0 ) == 1 )
1636 INVOKE_WCB( *window, KeyboardUp,
1638 window->State.MouseX, window->State.MouseY )
1640 #endif /* !TARGET_HOST_WINCE */
1644 if( keypress != -1 )
1645 INVOKE_WCB( *window, SpecialUp,
1647 window->State.MouseX, window->State.MouseY )
1650 fgState.Modifiers = 0xffffffff;
1657 if( (fgState.KeyRepeat==GLUT_KEY_REPEAT_OFF || window->State.IgnoreKeyRepeat==GL_TRUE) && (HIWORD(lParam) & KF_REPEAT) )
1660 fgState.Modifiers = fghGetWin32Modifiers( );
1661 INVOKE_WCB( *window, Keyboard,
1663 window->State.MouseX, window->State.MouseY )
1665 fgState.Modifiers = 0xffffffff;
1669 case WM_CAPTURECHANGED:
1670 /* User has finished resizing the window, force a redraw */
1671 INVOKE_WCB( *window, Display, ( ) );
1673 /*lRet = DefWindowProc( hWnd, uMsg, wParam, lParam ); */
1676 /* Other messages that I have seen and which are not handled already */
1677 case WM_SETTEXT: /* 0x000c */
1678 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1679 /* Pass it on to "DefWindowProc" to set the window text */
1682 case WM_GETTEXT: /* 0x000d */
1683 /* Ideally we would copy the title of the window into "lParam" */
1684 /* strncpy ( (char *)lParam, "Window Title", wParam );
1685 lRet = ( wParam > 12 ) ? 12 : wParam; */
1686 /* the number of characters copied */
1687 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1690 case WM_GETTEXTLENGTH: /* 0x000e */
1691 /* Ideally we would get the length of the title of the window */
1693 /* the number of characters in "Window Title\0" (see above) */
1696 case WM_ERASEBKGND: /* 0x0014 */
1697 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1700 #if !TARGET_HOST_WINCE
1701 case WM_SYNCPAINT: /* 0x0088 */
1702 /* Another window has moved, need to update this one */
1703 window->State.Redisplay = GL_TRUE;
1704 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1705 /* Help screen says this message must be passed to "DefWindowProc" */
1708 case WM_NCPAINT: /* 0x0085 */
1709 /* Need to update the border of this window */
1710 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1711 /* Pass it on to "DefWindowProc" to repaint a standard border */
1714 case WM_SYSCOMMAND : /* 0x0112 */
1717 * We have received a system command message. Try to act on it.
1718 * The commands are passed in through the "wParam" parameter:
1719 * The least significant digit seems to be which edge of the window
1720 * is being used for a resize event:
1724 * Congratulations and thanks to Richard Rauch for figuring this out..
1726 switch ( wParam & 0xfff0 )
1735 /* User has clicked on the "-" to minimize the window */
1736 /* Turn off the visibility */
1737 window->State.Visible = GL_FALSE ;
1744 case SC_NEXTWINDOW :
1747 case SC_PREVWINDOW :
1751 /* Followed very closely by a WM_CLOSE message */
1775 case SC_SCREENSAVE :
1783 fgWarning( "Unknown wParam type 0x%x", wParam );
1788 #endif /* !TARGET_HOST_WINCE */
1790 /* We need to pass the message on to the operating system as well */
1791 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1795 /* Handle unhandled messages */
1796 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1804 /*** END OF FILE ***/