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.
32 #define G_LOG_DOMAIN "freeglut-main"
34 #include "../include/GL/freeglut.h"
35 #include "freeglut_internal.h"
38 #if TARGET_HOST_UNIX_X11
39 #include <sys/types.h>
44 #elif TARGET_HOST_WIN32
48 #define MAX(a,b) (((a)>(b)) ? (a) : (b))
52 #define MIN(a,b) (((a)<(b)) ? (a) : (b))
57 * TODO BEFORE THE STABLE RELEASE:
59 * There are some issues concerning window redrawing under X11, and maybe
60 * some events are not handled. The Win32 version lacks some more features,
61 * but seems acceptable for not demanding purposes.
63 * Need to investigate why the X11 version breaks out with an error when
64 * closing a window (using the window manager, not glutDestroyWindow)...
67 /* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
70 * Calls a window's redraw method. This is used when
71 * a redraw is forced by the incoming window messages.
73 * XXX We can/should make a "unified" window handle type so that
74 * XXX the function headers don't need this silly #ifdef junk.
75 * XXX Make the type, say, {fgWindow}. On UNIX_X11, this is
76 * XXX {Window}. On WIN32, it is {HWND}. Then do the #ifdef
77 * XXX junk *once* in "freeglut_internal.h".
79 static void fghRedrawWindowByHandle
80 #if TARGET_HOST_UNIX_X11
82 #elif TARGET_HOST_WIN32
86 SFG_Window* window = fgWindowByHandle( handle );
87 freeglut_return_if_fail( window != NULL );
88 freeglut_return_if_fail( window->Callbacks.Display != NULL );
89 freeglut_return_if_fail( window->State.Visible == TRUE );
91 fgSetWindow( window );
92 window->State.Redisplay = FALSE;
93 window->Callbacks.Display();
97 * Handle a window configuration change. When no reshape
98 * callback is hooked, the viewport size is updated to
99 * match the new window size.
101 static void fghReshapeWindowByHandle
102 #if TARGET_HOST_UNIX_X11
103 ( Window handle, int width, int height )
104 #elif TARGET_HOST_WIN32
105 ( HWND handle, int width, int height )
108 SFG_Window *current_window = fgStructure.Window ;
110 SFG_Window* window = fgWindowByHandle( handle );
111 freeglut_return_if_fail( window != NULL );
113 fgSetWindow( window );
114 if( window->Callbacks.Reshape != NULL )
115 window->Callbacks.Reshape( width, height );
117 glViewport( 0, 0, width, height );
120 * Force a window redraw. In Windows at least this is only a partial
121 * solution: if the window is increasing in size in either dimension,
122 * the already-drawn part does not get drawn again and things look funny.
123 * But without this we get this bad behaviour whenever we resize the
126 window->State.Redisplay = TRUE ;
128 if ( window->IsMenu )
129 fgSetWindow ( current_window ) ;
133 * A static helper function to execute display callback for a window
135 static void fghcbDisplayWindow( SFG_Window *window, SFG_Enumerator *enumerator )
137 #if TARGET_HOST_UNIX_X11
138 if( (window->Callbacks.Display != NULL) &&
139 (window->State.Redisplay == TRUE) &&
140 (window->State.Visible == TRUE) )
142 SFG_Window *current_window = fgStructure.Window ;
144 fgSetWindow( window );
145 window->State.Redisplay = FALSE;
146 window->Callbacks.Display();
147 fgSetWindow( current_window ) ;
150 #elif TARGET_HOST_WIN32
152 if( window->State.NeedToResize )
154 SFG_Window *current_window = fgStructure.Window ;
156 fgSetWindow( window );
158 fghReshapeWindowByHandle(
159 window->Window.Handle,
160 glutGet( GLUT_WINDOW_WIDTH ),
161 glutGet( GLUT_WINDOW_HEIGHT )
164 window->State.NeedToResize = FALSE;
165 fgSetWindow ( current_window ) ;
168 if( (window->Callbacks.Display != NULL) &&
169 (window->State.Redisplay == TRUE) &&
170 (window->State.Visible == TRUE) )
172 window->State.Redisplay = FALSE;
175 window->Window.Handle, NULL, NULL,
176 RDW_NOERASE | RDW_INTERNALPAINT | RDW_INVALIDATE | RDW_UPDATENOW
182 fgEnumSubWindows( window, fghcbDisplayWindow, enumerator );
186 * Make all windows perform a display call
188 static void fghDisplayAll( void )
190 SFG_Enumerator enumerator;
192 enumerator.found = FALSE;
193 enumerator.data = NULL;
195 fgEnumWindows( fghcbDisplayWindow, &enumerator );
199 * Window enumerator callback to check for the joystick polling code
201 static void fghcbCheckJoystickPolls( SFG_Window *window,
202 SFG_Enumerator *enumerator )
204 long int checkTime = fgElapsedTime();
206 if( window->State.JoystickLastPoll + window->State.JoystickPollRate <=
209 fgJoystickPollWindow( window );
210 window->State.JoystickLastPoll = checkTime;
213 fgEnumSubWindows( window, fghcbCheckJoystickPolls, enumerator );
217 * Check all windows for joystick polling
219 static void fghCheckJoystickPolls( void )
221 SFG_Enumerator enumerator;
223 enumerator.found = FALSE;
224 enumerator.data = NULL;
226 fgEnumWindows( fghcbCheckJoystickPolls, &enumerator );
230 * Check the global timers
232 static void fghCheckTimers( void )
234 long checkTime = fgElapsedTime();
235 SFG_Timer *timer, *next;
238 fgListInit(&timedOut);
240 for( timer = (SFG_Timer *)fgState.Timers.First;
242 timer = (SFG_Timer *)next )
244 next = (SFG_Timer *)timer->Node.Next;
246 if( timer->TriggerTime <= checkTime )
248 fgListRemove( &fgState.Timers, &timer->Node );
249 fgListAppend( &timedOut, &timer->Node );
254 * Now feel free to execute all the hooked and timed out timer callbacks
255 * And delete the timed out timers...
257 while ( (timer = (SFG_Timer *)timedOut.First) )
259 if( timer->Callback != NULL )
260 timer->Callback( timer->ID );
261 fgListRemove( &timedOut, &timer->Node );
270 long fgElapsedTime( void )
272 #if TARGET_HOST_UNIX_X11
276 gettimeofday( &now, NULL );
278 elapsed = (now.tv_usec - fgState.Time.Value.tv_usec) / 1000;
279 elapsed += (now.tv_sec - fgState.Time.Value.tv_sec) * 1000;
282 #elif TARGET_HOST_WIN32
283 return (timeGetTime() - fgState.Time.Value);
290 void fgError( const char *fmt, ... )
296 fprintf( stderr, "freeglut ");
297 if( fgState.ProgramName )
298 fprintf (stderr, "(%s): ", fgState.ProgramName);
299 vfprintf( stderr, fmt, ap );
300 fprintf( stderr, "\n" );
307 void fgWarning( const char *fmt, ... )
313 fprintf( stderr, "freeglut ");
314 if( fgState.ProgramName )
315 fprintf( stderr, "(%s): ", fgState.ProgramName );
316 vfprintf( stderr, fmt, ap );
317 fprintf( stderr, "\n" );
323 * Indicates whether Joystick events are being used by ANY window.
325 * The current mechanism is to walk all of the windows and ask if
326 * there is a joystick callback. Certainly in some cases, maybe
327 * in all cases, the joystick is attached to the system and accessed
328 * from ONE point by GLUT/freeglut, so this is not the right way,
329 * in general, to do this. However, the Joystick code is segregated
330 * in its own little world, so we can't access the information that
331 * we need in order to do that nicely.
334 * * Store Joystick data into freeglut global state.
335 * * Provide NON-static functions or data from Joystick *.c file.
337 * Basically, the RIGHT way to do this requires knowing something
338 * about the Joystick. Right now, the Joystick code is behind
342 static void fgCheckJoystickCallback( SFG_Window* w, SFG_Enumerator* e)
344 if( w->Callbacks.Joystick )
349 fgEnumSubWindows( w, fgCheckJoystickCallback, e );
351 static int fgHaveJoystick( void )
353 SFG_Enumerator enumerator;
354 enumerator.found = FALSE;
355 enumerator.data = NULL;
356 fgEnumWindows( fgCheckJoystickCallback, &enumerator );
357 return !!enumerator.data;
359 static void fgHavePendingRedisplaysCallback( SFG_Window* w, SFG_Enumerator* e)
361 if( w->State.Redisplay )
366 fgEnumSubWindows( w, fgHavePendingRedisplaysCallback, e );
368 static int fgHavePendingRedisplays (void)
370 SFG_Enumerator enumerator;
371 enumerator.found = FALSE;
372 enumerator.data = NULL;
373 fgEnumWindows( fgHavePendingRedisplaysCallback, &enumerator );
374 return !!enumerator.data;
377 * Indicates whether there are any outstanding timers.
379 static int fgHaveTimers( void )
381 return !!fgState.Timers.First;
384 * Returns the number of GLUT ticks (milliseconds) till the next timer event.
386 static long fgNextTimer( void )
388 long now = fgElapsedTime();
392 for( timer = (SFG_Timer *)fgState.Timers.First;
394 timer = (SFG_Timer *)timer->Node.Next )
395 ret = MIN( ret, MAX( 0, (timer->TriggerTime) - now ) );
400 * Does the magic required to relinquish the CPU until something interesting
403 static void fgSleepForEvents( void )
405 #if TARGET_HOST_UNIX_X11
412 if( fgState.IdleCallback ||
413 fgHavePendingRedisplays() )
415 socket = ConnectionNumber( fgDisplay.Display );
417 FD_SET( socket, &fdset );
419 msec = fgNextTimer();
420 if( fgHaveJoystick() )
421 msec = MIN( msec, 10 );
423 wait.tv_sec = msec / 1000;
424 wait.tv_usec = (msec % 1000) * 1000;
425 err = select( socket+1, &fdset, NULL, NULL, &wait );
428 printf( "freeglut select() error: %d\n", errno );
430 #elif TARGET_HOST_WIN32
434 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
437 * Executes a single iteration in the freeglut processing loop.
439 void FGAPIENTRY glutMainLoopEvent( void )
441 #if TARGET_HOST_UNIX_X11
447 * This code was repeated constantly, so here it goes into a definition:
449 #define GETWINDOW(a) \
450 window = fgWindowByHandle( event.a.window ); \
451 if( window == NULL ) \
454 #define GETMOUSE(a) \
455 window->State.MouseX = event.a.x; \
456 window->State.MouseY = event.a.y;
458 freeglut_assert_ready;
460 while( XPending( fgDisplay.Display ) )
462 XNextEvent( fgDisplay.Display, &event );
468 * This is sent to confirm the XDestroyWindow call.
469 * XXX WHY is this commented out? Should we re-enable it?
471 /* fgAddToWindowDestroyList ( window, FALSE ); */
476 * Destroy the window when the WM_DELETE_WINDOW message arrives
478 if( (Atom) event.xclient.data.l[ 0 ] == fgDisplay.DeleteWindow )
480 GETWINDOW( xclient );
482 fgCloseWindow ( window ) ;
483 fgAddToWindowDestroyList ( window, FALSE );
489 * If we never do anything with this, can we just not ask to
490 * get these messages?
496 * We are too dumb to process partial exposes...
497 * XXX Well, we could do it. However, it seems to only
498 * XXX be potentially useful for single-buffered (since
499 * XXX double-buffered does not respect viewport when we
500 * XXX do a buffer-swap).
502 if( event.xexpose.count == 0 )
503 fghRedrawWindowByHandle( event.xexpose.window );
507 * CreateNotify causes a configure-event so that sub-windows are
508 * handled compatibly with GLUT. Otherwise, your sub-windows
509 * (in freeglut only) will not get an initial reshape event,
510 * which can break things.
512 * XXX NOTE that it is possible that you will more than one Reshape
513 * XXX event for your top-level window, but something like this
514 * XXX appears to be required for compatbility.
516 * GLUT presumably does this because it generally tries to treat
517 * sub-windows the same as windows.
520 case ConfigureNotify:
521 fghReshapeWindowByHandle(
522 event.xconfigure.window,
523 event.xconfigure.width,
524 event.xconfigure.height
530 * Have the client's keyboard knowledge updated (xlib.ps,
531 * page 206, says that's a good thing to do)
533 XRefreshKeyboardMapping( (XMappingEvent *) &event );
536 case VisibilityNotify:
538 GETWINDOW( xvisibility );
539 if( window->Callbacks.WindowStatus == NULL )
541 fgSetWindow( window );
544 * Sending this event, the X server can notify us that the window
545 * has just acquired one of the three possible visibility states:
546 * VisibilityUnobscured, VisibilityPartiallyObscured or
547 * VisibilityFullyObscured
549 switch( event.xvisibility.state )
551 case VisibilityUnobscured:
552 window->Callbacks.WindowStatus( GLUT_FULLY_RETAINED );
553 window->State.Visible = TRUE;
556 case VisibilityPartiallyObscured:
557 window->Callbacks.WindowStatus( GLUT_PARTIALLY_RETAINED );
558 window->State.Visible = TRUE;
561 case VisibilityFullyObscured:
562 window->Callbacks.WindowStatus( GLUT_FULLY_COVERED );
563 window->State.Visible = FALSE;
567 fgWarning( "Uknown X visibility state: %d",
568 event.xvisibility.state );
576 GETWINDOW( xcrossing );
577 GETMOUSE( xcrossing );
578 if( window->Callbacks.Entry )
580 fgSetWindow( window ) ;
581 window->Callbacks.Entry( GLUT_ENTERED );
588 GETWINDOW( xcrossing );
589 GETMOUSE( xcrossing );
590 if( window->Callbacks.Entry )
592 fgSetWindow( window ) ;
593 window->Callbacks.Entry( GLUT_LEFT );
600 GETWINDOW( xmotion );
603 if( window->ActiveMenu )
605 if( window == window->ActiveMenu->ParentWindow )
607 window->ActiveMenu->Window->State.MouseX =
608 event.xmotion.x_root - window->ActiveMenu->X;
609 window->ActiveMenu->Window->State.MouseY =
610 event.xmotion.y_root - window->ActiveMenu->Y;
612 window->ActiveMenu->Window->State.Redisplay = TRUE ;
613 fgSetWindow( window->ActiveMenu->ParentWindow ) ;
619 * XXX For more than 5 buttons, just check {event.xmotion.state},
620 * XXX rather than a host of bit-masks?
622 if( (event.xmotion.state & Button1Mask) ||
623 (event.xmotion.state & Button2Mask) ||
624 (event.xmotion.state & Button3Mask) ||
625 (event.xmotion.state & Button4Mask) ||
626 (event.xmotion.state & Button5Mask) )
629 * A mouse button was pressed during the movement...
630 * Is there a motion callback hooked to the window?
632 if( window->Callbacks.Motion )
634 fgSetWindow ( window ) ;
635 window->Callbacks.Motion( event.xmotion.x,
639 else if( window->Callbacks.Passive )
641 fgSetWindow ( window ) ;
642 window->Callbacks.Passive( event.xmotion.x, event.xmotion.y );
650 GLboolean pressed = TRUE;
653 if( event.type == ButtonRelease )
657 * A mouse button has been pressed or released. Traditionally,
658 * break if the window was found within the freeglut structures.
660 GETWINDOW( xbutton );
664 * An X button (at least in XFree86) is numbered from 1.
665 * A GLUT button is numbered from 0.
666 * Old GLUT passed through buttons other than just the first
667 * three, though it only gave symbolic names and official
668 * support to the first three.
670 button = event.xbutton.button - 1;
673 * Do not execute the application's mouse callback if a menu
674 * is hooked to this button. In that case an appropriate
675 * private call should be generated.
676 * Near as I can tell, this is the menu behaviour:
677 * - Down-click the menu button, menu not active: activate
678 * the menu with its upper left-hand corner at the mouse
680 * - Down-click any button outside the menu, menu active:
681 * deactivate the menu
682 * - Down-click any button inside the menu, menu active:
683 * select the menu entry and deactivate the menu
684 * - Up-click the menu button, menu not active: nothing happens
685 * - Up-click the menu button outside the menu, menu active:
687 * - Up-click the menu button inside the menu, menu active:
688 * select the menu entry and deactivate the menu
690 /* Window has an active menu, it absorbs any mouse click */
691 if( window->ActiveMenu )
693 if( window == window->ActiveMenu->ParentWindow )
695 window->ActiveMenu->Window->State.MouseX =
696 event.xbutton.x_root - window->ActiveMenu->X;
697 window->ActiveMenu->Window->State.MouseY =
698 event.xbutton.y_root - window->ActiveMenu->Y;
701 /* In the menu, invoke the callback and deactivate the menu*/
702 if( fgCheckActiveMenu( window->ActiveMenu->Window,
703 window->ActiveMenu ) == TRUE )
706 * Save the current window and menu and set the current
707 * window to the window whose menu this is
709 SFG_Window *save_window = fgStructure.Window;
710 SFG_Menu *save_menu = fgStructure.Menu;
711 SFG_Window *parent_window =
712 window->ActiveMenu->ParentWindow;
713 fgSetWindow( parent_window );
714 fgStructure.Menu = window->ActiveMenu;
716 /* Execute the menu callback */
717 fgExecuteMenuCallback( window->ActiveMenu );
718 fgDeactivateMenu( parent_window );
720 /* Restore the current window and menu */
721 fgSetWindow( save_window );
722 fgStructure.Menu = save_menu;
726 * Outside the menu, deactivate if it's a downclick
727 * XXX This isn't enough. A downclick outside of
728 * XXX the interior of our freeglut windows should also
729 * XXX deactivate the menu. This is more complicated.
731 fgDeactivateMenu( window->ActiveMenu->ParentWindow );
733 window->State.Redisplay = TRUE;
738 * No active menu, let's check whether we need to activate one.
740 if( ( 0 <= button ) &&
742 ( window->Menu[ button ] ) &&
745 window->State.Redisplay = TRUE;
746 fgSetWindow( window );
747 fgActivateMenu( window, button );
752 * Check if there is a mouse or mouse wheel callback hooked to the
755 if( ( window->Callbacks.Mouse == NULL ) &&
756 ( window->Callbacks.MouseWheel == NULL ) )
759 fgSetWindow( window );
762 if( event.xbutton.state & ( ShiftMask | LockMask ) )
763 modifiers |= GLUT_ACTIVE_SHIFT;
764 if( event.xbutton.state & ControlMask )
765 modifiers |= GLUT_ACTIVE_CTRL;
766 if( event.xbutton.state & Mod1Mask )
767 modifiers |= GLUT_ACTIVE_ALT;
768 fgStructure.Window->State.Modifiers = modifiers;
771 * Finally execute the mouse or mouse wheel callback
773 * XXX Use a symbolic constant, *not* "4"!
775 if( ( button < 4 ) || ( !( window->Callbacks.MouseWheel ) ) )
777 if( window->Callbacks.Mouse )
778 fgStructure.Window->Callbacks.Mouse(
780 event.type == ButtonPress ? GLUT_DOWN : GLUT_UP,
787 if( ( button >= 4 ) && window->Callbacks.MouseWheel )
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 int wheel_number = (button - 4) / 2;
799 int direction = (button & 1)*2 - 1;
802 fgStructure.Window->Callbacks.MouseWheel(
812 * Trash the modifiers state
814 fgStructure.Window->State.Modifiers = 0xffffffff;
821 FGCBkeyboard keyboard_cb;
822 FGCBspecial special_cb;
827 if( event.type == KeyPress )
829 keyboard_cb = window->Callbacks.Keyboard;
830 special_cb = window->Callbacks.Special;
834 keyboard_cb = window->Callbacks.KeyboardUp;
835 special_cb = window->Callbacks.SpecialUp;
839 * Is there a keyboard/special callback hooked for this window?
841 if( keyboard_cb || special_cb )
843 XComposeStatus composeStatus;
844 char asciiCode[ 32 ];
849 * Check for the ASCII/KeySym codes associated with the event:
851 len = XLookupString( &event.xkey, asciiCode, sizeof(asciiCode),
852 &keySym, &composeStatus );
855 * GLUT API tells us to have two separate callbacks...
860 * ...one for the ASCII translateable keypresses...
864 fgSetWindow( window );
867 * Remember the current modifiers state
870 if( event.xkey.state & ( ShiftMask | LockMask ) )
871 modifiers |= GLUT_ACTIVE_SHIFT;
872 if( event.xkey.state & ControlMask )
873 modifiers |= GLUT_ACTIVE_CTRL;
874 if( event.xkey.state & Mod1Mask )
875 modifiers |= GLUT_ACTIVE_ALT;
876 window->State.Modifiers = modifiers;
878 keyboard_cb( asciiCode[ 0 ],
879 event.xkey.x, event.xkey.y );
882 * Trash the modifiers state
884 window->State.Modifiers = 0xffffffff;
892 * ...and one for all the others, which need to be
893 * translated to GLUT_KEY_Xs...
897 case XK_F1: special = GLUT_KEY_F1; break;
898 case XK_F2: special = GLUT_KEY_F2; break;
899 case XK_F3: special = GLUT_KEY_F3; break;
900 case XK_F4: special = GLUT_KEY_F4; break;
901 case XK_F5: special = GLUT_KEY_F5; break;
902 case XK_F6: special = GLUT_KEY_F6; break;
903 case XK_F7: special = GLUT_KEY_F7; break;
904 case XK_F8: special = GLUT_KEY_F8; break;
905 case XK_F9: special = GLUT_KEY_F9; break;
906 case XK_F10: special = GLUT_KEY_F10; break;
907 case XK_F11: special = GLUT_KEY_F11; break;
908 case XK_F12: special = GLUT_KEY_F12; break;
910 case XK_Left: special = GLUT_KEY_LEFT; break;
911 case XK_Right: special = GLUT_KEY_RIGHT; break;
912 case XK_Up: special = GLUT_KEY_UP; break;
913 case XK_Down: special = GLUT_KEY_DOWN; break;
916 case XK_Prior: special = GLUT_KEY_PAGE_UP; break;
918 case XK_Next: special = GLUT_KEY_PAGE_DOWN; break;
920 case XK_Home: special = GLUT_KEY_HOME; break;
922 case XK_End: special = GLUT_KEY_END; break;
924 case XK_Insert: special = GLUT_KEY_INSERT; break;
928 * Execute the callback (if one has been specified),
929 * given that the special code seems to be valid...
931 if( special_cb && (special != -1) )
933 fgSetWindow( window );
936 * Remember the current modifiers state
939 if( event.xkey.state & ( ShiftMask | LockMask ) )
940 modifiers |= GLUT_ACTIVE_SHIFT;
941 if( event.xkey.state & ControlMask )
942 modifiers |= GLUT_ACTIVE_CTRL;
943 if( event.xkey.state & Mod1Mask )
944 modifiers |= GLUT_ACTIVE_ALT;
945 window->State.Modifiers = modifiers;
947 special_cb( special, event.xkey.x, event.xkey.y );
950 * Trash the modifiers state
952 window->State.Modifiers = 0xffffffff;
960 fgWarning ("Unknown X event type: %d", event.type);
965 #elif TARGET_HOST_WIN32
969 while( PeekMessage( &stMsg, NULL, 0, 0, PM_NOREMOVE ) )
971 if( GetMessage( &stMsg, NULL, 0, 0 ) == 0 )
972 fgState.ExecState = GLUT_EXEC_STATE_STOP ;
974 TranslateMessage( &stMsg );
975 DispatchMessage( &stMsg );
980 fghCheckJoystickPolls( );
987 * Enters the freeglut processing loop.
988 * Stays until the "ExecState" changes to "GLUT_EXEC_STATE_STOP".
990 void FGAPIENTRY glutMainLoop( void )
992 #if TARGET_HOST_WIN32
993 SFG_Window *window = (SFG_Window *)fgStructure.Windows.First ;
996 freeglut_assert_ready;
998 #if TARGET_HOST_WIN32
1000 * Processing before the main loop: If there is a window which is open and
1001 * which has a visibility callback, call it. I know this is an ugly hack,
1002 * but I'm not sure what else to do about it. Ideally we should leave
1003 * something uninitialized in the create window code and initialize it in
1004 * the main loop, and have that initialization create a "WM_ACTIVATE"
1005 * message. Then we would put the visibility callback code in the
1006 * "case WM_ACTIVATE" block below. - John Fay -- 10/24/02
1010 if ( window->Callbacks.Visibility )
1012 SFG_Window *current_window = fgStructure.Window ;
1014 fgSetWindow( window );
1015 window->Callbacks.Visibility ( window->State.Visible ) ;
1016 fgSetWindow( current_window );
1019 window = (SFG_Window *)window->Node.Next ;
1023 fgState.ExecState = GLUT_EXEC_STATE_RUNNING ;
1024 while( fgState.ExecState == GLUT_EXEC_STATE_RUNNING )
1026 glutMainLoopEvent( );
1028 if( fgStructure.Windows.First == NULL )
1029 fgState.ExecState = GLUT_EXEC_STATE_STOP;
1032 if( fgState.IdleCallback )
1033 fgState.IdleCallback( );
1040 fgExecutionState execState = fgState.ActionOnWindowClose;
1043 * When this loop terminates, destroy the display, state and structure
1044 * of a freeglut session, so that another glutInit() call can happen
1048 if( execState == GLUT_ACTION_EXIT )
1054 * Leaves the freeglut processing loop.
1056 void FGAPIENTRY glutLeaveMainLoop( void )
1058 fgState.ExecState = GLUT_EXEC_STATE_STOP ;
1062 * The window procedure for handling Win32 events
1064 #if TARGET_HOST_WIN32
1065 LRESULT CALLBACK fgWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam,
1068 SFG_Window* window = fgWindowByHandle( hWnd );
1072 if ( ( window == NULL ) && ( uMsg != WM_CREATE ) )
1073 return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
1075 /* printf ( "Window %3d message <%04x> %12d %12d\n", window?window->ID:0,
1076 uMsg, wParam, lParam ); */
1081 * The window structure is passed as the creation structure paramter...
1083 window = (SFG_Window *) (((LPCREATESTRUCT) lParam)->lpCreateParams);
1084 assert( window != NULL );
1086 window->Window.Handle = hWnd;
1087 window->Window.Device = GetDC( hWnd );
1088 if( fgState.BuildingAMenu )
1090 unsigned int current_DisplayMode = fgState.DisplayMode;
1091 fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH;
1092 fgSetupPixelFormat( window, FALSE, PFD_MAIN_PLANE );
1093 fgState.DisplayMode = current_DisplayMode;
1095 if( fgStructure.MenuContext )
1096 wglMakeCurrent( window->Window.Device,
1097 fgStructure.MenuContext->Context ) ;
1100 fgStructure.MenuContext =
1101 (SFG_MenuContext *)malloc( sizeof(SFG_MenuContext) );
1102 fgStructure.MenuContext->Context =
1103 wglCreateContext( window->Window.Device );
1106 /* window->Window.Context = wglGetCurrentContext () ; */
1107 window->Window.Context = wglCreateContext( window->Window.Device );
1111 fgSetupPixelFormat( window, FALSE, PFD_MAIN_PLANE );
1113 if( fgState.UseCurrentContext != TRUE )
1114 window->Window.Context =
1115 wglCreateContext( window->Window.Device );
1118 window->Window.Context = wglGetCurrentContext( );
1119 if( ! window->Window.Context )
1120 window->Window.Context =
1121 wglCreateContext( window->Window.Device );
1125 window->State.NeedToResize = TRUE;
1126 ReleaseDC( window->Window.Handle, window->Window.Device );
1131 * We got resized... But check if the window has been already added...
1133 fghReshapeWindowByHandle( hWnd, LOWORD(lParam), HIWORD(lParam) );
1137 printf("WM_SETFOCUS: %p\n", window );
1138 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1142 if (LOWORD(wParam) != WA_INACTIVE)
1144 /* glutSetCursor( fgStructure.Window->State.Cursor ); */
1145 printf("WM_ACTIVATE: glutSetCursor( %p, %d)\n", window,
1146 window->State.Cursor );
1148 glutSetCursor( window->State.Cursor );
1151 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1157 * Windows seems to need reminding to erase the cursor for NONE.
1160 if ((LOWORD(lParam) == HTCLIENT) &&
1161 (fgStructure.Window->State.Cursor == GLUT_CURSOR_NONE))
1164 /* Set the cursor AND change it for this window class. */
1165 # define MAP_CURSOR(a,b) case a: SetCursor( LoadCursor( NULL, b ) ); \
1167 /* Nuke the cursor AND change it for this window class. */
1168 # define ZAP_CURSOR(a,b) case a: SetCursor( NULL ); \
1171 if( LOWORD( lParam ) == HTCLIENT )
1172 switch( window->State.Cursor )
1174 MAP_CURSOR( GLUT_CURSOR_RIGHT_ARROW, IDC_ARROW );
1175 MAP_CURSOR( GLUT_CURSOR_LEFT_ARROW, IDC_ARROW );
1176 MAP_CURSOR( GLUT_CURSOR_INFO, IDC_HELP );
1177 MAP_CURSOR( GLUT_CURSOR_DESTROY, IDC_CROSS );
1178 MAP_CURSOR( GLUT_CURSOR_HELP, IDC_HELP );
1179 MAP_CURSOR( GLUT_CURSOR_CYCLE, IDC_SIZEALL );
1180 MAP_CURSOR( GLUT_CURSOR_SPRAY, IDC_CROSS );
1181 MAP_CURSOR( GLUT_CURSOR_WAIT, IDC_WAIT );
1182 MAP_CURSOR( GLUT_CURSOR_TEXT, IDC_UPARROW );
1183 MAP_CURSOR( GLUT_CURSOR_CROSSHAIR, IDC_CROSS );
1184 /* MAP_CURSOR( GLUT_CURSOR_NONE, IDC_NO ); */
1185 ZAP_CURSOR( GLUT_CURSOR_NONE, NULL );
1188 MAP_CURSOR( GLUT_CURSOR_UP_DOWN, IDC_ARROW );
1192 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1196 window->State.Visible = TRUE;
1197 window->State.Redisplay = TRUE;
1201 BeginPaint( hWnd, &ps );
1202 fghRedrawWindowByHandle( hWnd );
1203 EndPaint( hWnd, &ps );
1208 * Make sure we don't close a window with current context active
1210 if( fgStructure.Window == window )
1215 wglMakeCurrent( NULL, NULL );
1217 * Step through the list of windows. If the rendering context
1218 * is not being used by another window, then we delete it.
1220 for( iter = (SFG_Window *)fgStructure.Windows.First;
1222 iter = (SFG_Window *)iter->Node.Next )
1224 if( ( iter->Window.Context == window->Window.Context ) &&
1225 ( iter != window ) )
1230 wglDeleteContext( window->Window.Context );
1234 * Put on a linked list of windows to be removed after all the
1235 * callbacks have returned
1237 fgAddToWindowDestroyList( window, FALSE ) ;
1238 DestroyWindow( hWnd );
1243 * The window already got destroyed, so don't bother with it.
1249 window->State.MouseX = LOWORD( lParam );
1250 window->State.MouseY = HIWORD( lParam );
1252 if ( window->ActiveMenu )
1254 window->State.Redisplay = TRUE ;
1257 * Since the window is a menu, make the parent window current
1259 fgSetWindow ( window->ActiveMenu->ParentWindow ) ;
1264 window->State.Modifiers =
1265 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1266 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1267 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1268 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1269 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1270 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1272 if( ( wParam & MK_LBUTTON ) ||
1273 ( wParam & MK_MBUTTON ) ||
1274 ( wParam & MK_RBUTTON ) )
1276 if( window->Callbacks.Motion )
1278 fgSetWindow( window );
1279 window->Callbacks.Motion( window->State.MouseX,
1280 window->State.MouseY );
1285 if( window->Callbacks.Passive )
1287 fgSetWindow( window );
1288 window->Callbacks.Passive( window->State.MouseX,
1289 window->State.MouseY );
1293 window->State.Modifiers = 0xffffffff;
1297 case WM_LBUTTONDOWN:
1298 case WM_MBUTTONDOWN:
1299 case WM_RBUTTONDOWN:
1304 GLboolean pressed = TRUE;
1307 window->State.MouseX = LOWORD( lParam );
1308 window->State.MouseY = HIWORD( lParam );
1312 case WM_LBUTTONDOWN:
1313 pressed = TRUE; button = GLUT_LEFT_BUTTON; break;
1314 case WM_MBUTTONDOWN:
1315 pressed = TRUE; button = GLUT_MIDDLE_BUTTON; break;
1316 case WM_RBUTTONDOWN:
1317 pressed = TRUE; button = GLUT_RIGHT_BUTTON; break;
1319 pressed = FALSE; button = GLUT_LEFT_BUTTON; break;
1321 pressed = FALSE; button = GLUT_MIDDLE_BUTTON; break;
1323 pressed = FALSE; button = GLUT_RIGHT_BUTTON; break;
1325 pressed = FALSE; button = -1; break;
1328 if( GetSystemMetrics( SM_SWAPBUTTON ) )
1329 if( button == GLUT_LEFT_BUTTON )
1330 button = GLUT_RIGHT_BUTTON;
1331 else if( button == GLUT_RIGHT_BUTTON )
1332 button = GLUT_LEFT_BUTTON;
1335 return DefWindowProc( hWnd, uMsg, lParam, wParam );
1338 * Do not execute the application's mouse callback if a
1339 * menu is hooked to this button.
1340 * In that case an appropriate private call should be generated.
1341 * Near as I can tell, this is the menu behaviour:
1342 * - Down-click the menu button, menu not active: activate
1343 * the menu with its upper left-hand corner at the mouse location.
1344 * - Down-click any button outside the menu, menu active:
1345 * deactivate the menu
1346 * - Down-click any button inside the menu, menu active:
1347 * select the menu entry and deactivate the menu
1348 * - Up-click the menu button, menu not active: nothing happens
1349 * - Up-click the menu button outside the menu, menu active:
1351 * - Up-click the menu button inside the menu, menu active:
1352 * select the menu entry and deactivate the menu
1354 /* Window has an active menu, it absorbs any mouse click */
1355 if( window->ActiveMenu )
1357 /* Inside the menu, invoke the callback and deactivate the menu*/
1358 if( fgCheckActiveMenu( window, window->ActiveMenu ) == TRUE )
1361 * Save the current window and menu and set the current
1362 * window to the window whose menu this is
1364 SFG_Window *save_window = fgStructure.Window;
1365 SFG_Menu *save_menu = fgStructure.Menu;
1366 SFG_Window *parent_window = window->ActiveMenu->ParentWindow;
1367 fgSetWindow( parent_window );
1368 fgStructure.Menu = window->ActiveMenu;
1370 /* Execute the menu callback */
1371 fgExecuteMenuCallback( window->ActiveMenu );
1372 fgDeactivateMenu( parent_window );
1374 /* Restore the current window and menu */
1375 fgSetWindow( save_window );
1376 fgStructure.Menu = save_menu;
1378 else /* Out of menu, deactivate the menu if it's a downclick */
1380 if( pressed == TRUE )
1381 fgDeactivateMenu( window->ActiveMenu->ParentWindow );
1385 * Let's make the window redraw as a result of the mouse
1386 * click and menu activity.
1388 if( ! window->IsMenu )
1389 window->State.Redisplay = TRUE;
1394 if ( ( window->Menu[ button ] != NULL ) && ( pressed == TRUE ) )
1396 window->State.Redisplay = TRUE;
1397 fgSetWindow( window );
1398 fgActivateMenu( window, button );
1403 if( window->Callbacks.Mouse == NULL )
1406 fgSetWindow( window );
1408 fgStructure.Window->State.Modifiers =
1409 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1410 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1411 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1412 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1413 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1414 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1416 window->Callbacks.Mouse(
1418 pressed == TRUE ? GLUT_DOWN : GLUT_UP,
1419 window->State.MouseX,
1420 window->State.MouseY
1423 fgStructure.Window->State.Modifiers = 0xffffffff;
1428 /* Should be WM_MOUSEWHEEL but my compiler doesn't recognize it */
1430 int wheel_number = LOWORD( lParam );
1431 /* THIS IS SPECULATIVE -- John Fay, 10/2/03 */
1432 int ticks = HIWORD( lParam ) / 120;
1433 /* Should be WHEEL_DELTA instead of 120 */
1443 * The mouse cursor has moved. Remember the new mouse cursor's position
1445 /* window->State.MouseX = LOWORD( lParam ); */
1446 /* Need to adjust by window position, */
1447 /* window->State.MouseY = HIWORD( lParam ); */
1448 /* change "lParam" to other parameter */
1450 if( ( window->Callbacks.MouseWheel == NULL ) &&
1451 ( window->Callbacks.Mouse == NULL ) )
1454 fgSetWindow( window );
1455 fgStructure.Window->State.Modifiers =
1456 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1457 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1458 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1459 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1460 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1461 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1464 if( window->Callbacks.MouseWheel )
1465 window->Callbacks.MouseWheel(
1468 window->State.MouseX,
1469 window->State.MouseY
1471 else /* No mouse wheel, call the mouse button callback twice */
1474 * XXX The below assumes that you have no more than 3 mouse
1475 * XXX buttons. Sorry.
1477 int button = wheel_number*2 + 4;
1478 button += (1 + direction)/2;
1479 window->Callbacks.Mouse( button, GLUT_DOWN,
1480 window->State.MouseX,
1481 window->State.MouseY ) ;
1482 window->Callbacks.Mouse( button, GLUT_UP,
1483 window->State.MouseX,
1484 window->State.MouseY ) ;
1487 fgStructure.Window->State.Modifiers = 0xffffffff;
1497 if( fgState.IgnoreKeyRepeat && (lParam & KF_REPEAT) )
1501 * Remember the current modifiers state. This is done here in order
1502 * to make sure the VK_DELETE keyboard callback is executed properly.
1504 window->State.Modifiers =
1505 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1506 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1507 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1508 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1509 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1510 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1512 GetCursorPos( &mouse_pos );
1513 ScreenToClient( window->Window.Handle, &mouse_pos );
1515 window->State.MouseX = mouse_pos.x;
1516 window->State.MouseY = mouse_pos.y;
1519 * Convert the Win32 keystroke codes to GLUTtish way
1521 # define KEY(a,b) case a: keypress = b; break;
1525 KEY( VK_F1, GLUT_KEY_F1 );
1526 KEY( VK_F2, GLUT_KEY_F2 );
1527 KEY( VK_F3, GLUT_KEY_F3 );
1528 KEY( VK_F4, GLUT_KEY_F4 );
1529 KEY( VK_F5, GLUT_KEY_F5 );
1530 KEY( VK_F6, GLUT_KEY_F6 );
1531 KEY( VK_F7, GLUT_KEY_F7 );
1532 KEY( VK_F8, GLUT_KEY_F8 );
1533 KEY( VK_F9, GLUT_KEY_F9 );
1534 KEY( VK_F10, GLUT_KEY_F10 );
1535 KEY( VK_F11, GLUT_KEY_F11 );
1536 KEY( VK_F12, GLUT_KEY_F12 );
1537 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP );
1538 KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1539 KEY( VK_HOME, GLUT_KEY_HOME );
1540 KEY( VK_END, GLUT_KEY_END );
1541 KEY( VK_LEFT, GLUT_KEY_LEFT );
1542 KEY( VK_UP, GLUT_KEY_UP );
1543 KEY( VK_RIGHT, GLUT_KEY_RIGHT );
1544 KEY( VK_DOWN, GLUT_KEY_DOWN );
1545 KEY( VK_INSERT, GLUT_KEY_INSERT );
1549 * The delete key should be treated as an ASCII keypress:
1551 if( window->Callbacks.Keyboard )
1553 fgSetWindow( window );
1554 window->Callbacks.Keyboard( 127, window->State.MouseX,
1555 window->State.MouseY );
1559 if( ( keypress != -1 ) && window->Callbacks.Special )
1561 fgSetWindow( window );
1562 window->Callbacks.Special( keypress, window->State.MouseX,
1563 window->State.MouseY );
1566 window->State.Modifiers = 0xffffffff;
1577 * Remember the current modifiers state. This is done here in order
1578 * to make sure the VK_DELETE keyboard callback is executed properly.
1580 window->State.Modifiers =
1581 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1582 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1583 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1584 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1585 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1586 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1588 GetCursorPos( &mouse_pos );
1589 ScreenToClient( window->Window.Handle, &mouse_pos );
1591 window->State.MouseX = mouse_pos.x;
1592 window->State.MouseY = mouse_pos.y;
1595 * Convert the Win32 keystroke codes to GLUTtish way.
1596 * "KEY(a,b)" was defined under "WM_KEYDOWN"
1601 KEY( VK_F1, GLUT_KEY_F1 );
1602 KEY( VK_F2, GLUT_KEY_F2 );
1603 KEY( VK_F3, GLUT_KEY_F3 );
1604 KEY( VK_F4, GLUT_KEY_F4 );
1605 KEY( VK_F5, GLUT_KEY_F5 );
1606 KEY( VK_F6, GLUT_KEY_F6 );
1607 KEY( VK_F7, GLUT_KEY_F7 );
1608 KEY( VK_F8, GLUT_KEY_F8 );
1609 KEY( VK_F9, GLUT_KEY_F9 );
1610 KEY( VK_F10, GLUT_KEY_F10 );
1611 KEY( VK_F11, GLUT_KEY_F11 );
1612 KEY( VK_F12, GLUT_KEY_F12 );
1613 KEY( VK_PRIOR, GLUT_KEY_PAGE_UP );
1614 KEY( VK_NEXT, GLUT_KEY_PAGE_DOWN );
1615 KEY( VK_HOME, GLUT_KEY_HOME );
1616 KEY( VK_END, GLUT_KEY_END );
1617 KEY( VK_LEFT, GLUT_KEY_LEFT );
1618 KEY( VK_UP, GLUT_KEY_UP );
1619 KEY( VK_RIGHT, GLUT_KEY_RIGHT );
1620 KEY( VK_DOWN, GLUT_KEY_DOWN );
1621 KEY( VK_INSERT, GLUT_KEY_INSERT );
1625 * The delete key should be treated as an ASCII keypress:
1627 if( window->Callbacks.KeyboardUp )
1629 fgSetWindow( window );
1630 window->Callbacks.KeyboardUp( 127, window->State.MouseX,
1631 window->State.MouseY );
1641 GetKeyboardState( state );
1643 if( ToAscii( wParam, 0, state, code, 0 ) == 1 )
1646 if( window->Callbacks.KeyboardUp )
1648 fgSetWindow( window );
1649 window->Callbacks.KeyboardUp( (char)wParam,
1650 window->State.MouseX,
1651 window->State.MouseY );
1656 if( (keypress != -1) && window->Callbacks.SpecialUp )
1658 fgSetWindow( window );
1659 window->Callbacks.SpecialUp( keypress, window->State.MouseX,
1660 window->State.MouseY );
1663 window->State.Modifiers = 0xffffffff;
1670 if( fgState.IgnoreKeyRepeat && (lParam & KF_REPEAT) )
1673 if( window->Callbacks.Keyboard )
1675 fgSetWindow( window );
1676 window->State.Modifiers =
1677 ( ( ( GetKeyState( VK_LSHIFT ) < 0 ) ||
1678 ( GetKeyState( VK_RSHIFT ) < 0 )) ? GLUT_ACTIVE_SHIFT : 0 ) |
1679 ( ( ( GetKeyState( VK_LCONTROL ) < 0 ) ||
1680 ( GetKeyState( VK_RCONTROL ) < 0 )) ? GLUT_ACTIVE_CTRL : 0 ) |
1681 ( ( ( GetKeyState( VK_LMENU ) < 0 ) ||
1682 ( GetKeyState( VK_RMENU ) < 0 )) ? GLUT_ACTIVE_ALT : 0 );
1684 window->Callbacks.Keyboard( (char)wParam, window->State.MouseX,
1685 window->State.MouseY );
1686 window->State.Modifiers = 0xffffffff;
1691 case WM_CAPTURECHANGED:
1692 /* User has finished resizing the window, force a redraw */
1693 if( window->Callbacks.Display )
1695 fgSetWindow( window );
1697 window->Callbacks.Display( );
1700 /*lRet = DefWindowProc( hWnd, uMsg, wParam, lParam ) ; */
1704 * Other messages that I have seen and which are not handled already
1706 case WM_SETTEXT: /* 0x000c */
1707 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1708 /* Pass it on to "DefWindowProc" to set the window text */
1711 case WM_GETTEXT: /* 0x000d */
1712 /* Ideally we would copy the title of the window into "lParam" */
1713 /* strncpy ( (char *)lParam, "Window Title", wParam );
1714 lRet = ( wParam > 12 ) ? 12 : wParam; */
1715 /* the number of characters copied */
1716 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1719 case WM_GETTEXTLENGTH: /* 0x000e */
1720 /* Ideally we would get the length of the title of the window */
1722 /* the number of characters in "Window Title\0" (see above) */
1725 case WM_ERASEBKGND: /* 0x0014 */
1726 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1729 case WM_SYNCPAINT: /* 0x0088 */
1730 /* Another window has moved, need to update this one */
1731 window->State.Redisplay = TRUE;
1732 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1733 /* Help screen says this message must be passed to "DefWindowProc" */
1736 case WM_NCPAINT: /* 0x0085 */
1737 /* Need to update the border of this window */
1738 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1739 /* Pass it on to "DefWindowProc" to repaint a standard border */
1744 * Handle unhandled messages
1746 lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
1754 /*** END OF FILE ***/