2 * Message queues related functions
4 * Copyright 1993, 1994 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #ifdef HAVE_SYS_TIME_H
27 # include <sys/time.h>
29 #include <sys/types.h>
36 #include "wine/server.h"
46 #include "wine/debug.h"
48 WINE_DEFAULT_DEBUG_CHANNEL(msg);
49 WINE_DECLARE_DEBUG_CHANNEL(key);
51 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
52 #define WM_NCMOUSELAST WM_NCMBUTTONDBLCLK
55 /***********************************************************************
58 inline static BOOL is_keyboard_message( UINT message )
60 return (message >= WM_KEYFIRST && message <= WM_KEYLAST);
64 /***********************************************************************
67 inline static BOOL is_mouse_message( UINT message )
69 return ((message >= WM_NCMOUSEFIRST && message <= WM_NCMOUSELAST) ||
70 (message >= WM_MOUSEFIRST && message <= WM_MOUSELAST));
74 /***********************************************************************
75 * check_message_filter
77 inline static BOOL check_message_filter( const MSG *msg, HWND hwnd, UINT first, UINT last )
81 if (msg->hwnd != hwnd && !IsChild( hwnd, msg->hwnd )) return FALSE;
85 return (msg->message >= first && msg->message <= last);
91 /***********************************************************************
92 * process_sent_messages
94 * Process all pending sent messages.
96 inline static void process_sent_messages(void)
99 MSG_peek_message( &msg, 0, 0, 0, GET_MSG_REMOVE | GET_MSG_SENT_ONLY );
103 /***********************************************************************
104 * queue_hardware_message
106 * store a hardware message in the thread queue
109 static void queue_hardware_message( MSG *msg, ULONG_PTR extra_info )
111 SERVER_START_REQ( send_message )
113 req->type = MSG_HARDWARE;
114 req->id = GetWindowThreadProcessId( msg->hwnd, NULL );
115 req->win = msg->hwnd;
116 req->msg = msg->message;
117 req->wparam = msg->wParam;
118 req->lparam = msg->lParam;
121 req->time = msg->time;
122 req->info = extra_info;
124 wine_server_call( req );
131 /***********************************************************************
132 * MSG_SendParentNotify
134 * Send a WM_PARENTNOTIFY to all ancestors of the given window, unless
135 * the window has the WS_EX_NOPARENTNOTIFY style.
137 static void MSG_SendParentNotify( HWND hwnd, WORD event, WORD idChild, POINT pt )
139 /* pt has to be in the client coordinates of the parent window */
140 MapWindowPoints( 0, hwnd, &pt, 1 );
145 if (!(GetWindowLongA( hwnd, GWL_STYLE ) & WS_CHILD)) break;
146 if (GetWindowLongA( hwnd, GWL_EXSTYLE ) & WS_EX_NOPARENTNOTIFY) break;
147 if (!(parent = GetParent(hwnd))) break;
148 MapWindowPoints( hwnd, parent, &pt, 1 );
150 SendMessageA( hwnd, WM_PARENTNOTIFY,
151 MAKEWPARAM( event, idChild ), MAKELPARAM( pt.x, pt.y ) );
156 #if 0 /* this is broken for now, will require proper support in the server */
158 /***********************************************************************
159 * MSG_JournalPlayBackMsg
161 * Get an EVENTMSG struct via call JOURNALPLAYBACK hook function
163 void MSG_JournalPlayBackMsg(void)
170 wtime=HOOK_CallHooks( WH_JOURNALPLAYBACK, HC_GETNEXT, 0, (LPARAM)&tmpMsg, TRUE );
171 /* TRACE(msg,"Playback wait time =%ld\n",wtime); */
175 msg.message = tmpMsg.message;
176 msg.hwnd = tmpMsg.hwnd;
177 msg.time = tmpMsg.time;
178 if ((tmpMsg.message >= WM_KEYFIRST) && (tmpMsg.message <= WM_KEYLAST))
180 msg.wParam = tmpMsg.paramL & 0xFF;
181 msg.lParam = MAKELONG(tmpMsg.paramH&0x7ffff,tmpMsg.paramL>>8);
182 if (tmpMsg.message == WM_KEYDOWN || tmpMsg.message == WM_SYSKEYDOWN)
184 for (keyDown=i=0; i<256 && !keyDown; i++)
185 if (InputKeyStateTable[i] & 0x80)
188 msg.lParam |= 0x40000000;
189 InputKeyStateTable[msg.wParam] |= 0x80;
190 AsyncKeyStateTable[msg.wParam] |= 0x80;
192 else /* WM_KEYUP, WM_SYSKEYUP */
194 msg.lParam |= 0xC0000000;
195 InputKeyStateTable[msg.wParam] &= ~0x80;
197 if (InputKeyStateTable[VK_MENU] & 0x80)
198 msg.lParam |= 0x20000000;
199 if (tmpMsg.paramH & 0x8000) /*special_key bit*/
200 msg.lParam |= 0x01000000;
202 msg.pt.x = msg.pt.y = 0;
203 queue_hardware_message( &msg, 0 );
205 else if ((tmpMsg.message>= WM_MOUSEFIRST) && (tmpMsg.message <= WM_MOUSELAST))
207 switch (tmpMsg.message)
210 InputKeyStateTable[VK_LBUTTON] |= 0x80;
211 AsyncKeyStateTable[VK_LBUTTON] |= 0x80;
214 InputKeyStateTable[VK_LBUTTON] &= ~0x80;
217 InputKeyStateTable[VK_MBUTTON] |= 0x80;
218 AsyncKeyStateTable[VK_MBUTTON] |= 0x80;
221 InputKeyStateTable[VK_MBUTTON] &= ~0x80;
224 InputKeyStateTable[VK_RBUTTON] |= 0x80;
225 AsyncKeyStateTable[VK_RBUTTON] |= 0x80;
228 InputKeyStateTable[VK_RBUTTON] &= ~0x80;
231 SetCursorPos(tmpMsg.paramL,tmpMsg.paramH);
232 msg.lParam=MAKELONG(tmpMsg.paramL,tmpMsg.paramH);
234 if (InputKeyStateTable[VK_LBUTTON] & 0x80) msg.wParam |= MK_LBUTTON;
235 if (InputKeyStateTable[VK_MBUTTON] & 0x80) msg.wParam |= MK_MBUTTON;
236 if (InputKeyStateTable[VK_RBUTTON] & 0x80) msg.wParam |= MK_RBUTTON;
238 msg.pt.x = tmpMsg.paramL;
239 msg.pt.y = tmpMsg.paramH;
240 queue_hardware_message( &msg, 0 );
242 HOOK_CallHooks( WH_JOURNALPLAYBACK, HC_SKIP, 0, (LPARAM)&tmpMsg, TRUE );
246 if( tmpMsg.message == WM_QUEUESYNC ) HOOK_CallHooks( WH_CBT, HCBT_QS, 0, 0, TRUE );
252 /***********************************************************************
253 * process_raw_keyboard_message
255 * returns TRUE if the contents of 'msg' should be passed to the application
257 static void process_raw_keyboard_message( MSG *msg )
261 event.message = msg->message;
262 event.hwnd = msg->hwnd;
263 event.time = msg->time;
264 event.paramL = (msg->wParam & 0xFF) | (HIWORD(msg->lParam) << 8);
265 event.paramH = msg->lParam & 0x7FFF;
266 if (HIWORD(msg->lParam) & 0x0100) event.paramH |= 0x8000; /* special_key - bit */
267 HOOK_CallHooks( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event, TRUE );
271 /***********************************************************************
272 * process_cooked_keyboard_message
274 * returns TRUE if the contents of 'msg' should be passed to the application
276 static BOOL process_cooked_keyboard_message( MSG *msg, BOOL remove )
280 /* Handle F1 key by sending out WM_HELP message */
281 if ((msg->message == WM_KEYUP) &&
282 (msg->wParam == VK_F1) &&
283 (msg->hwnd != GetDesktopWindow()) &&
284 !MENU_IsMenuActive())
287 hi.cbSize = sizeof(HELPINFO);
288 hi.iContextType = HELPINFO_WINDOW;
289 hi.iCtrlId = GetWindowLongA( msg->hwnd, GWL_ID );
290 hi.hItemHandle = msg->hwnd;
291 hi.dwContextId = GetWindowContextHelpId( msg->hwnd );
292 hi.MousePos = msg->pt;
293 SendMessageA(msg->hwnd, WM_HELP, 0, (LPARAM)&hi);
297 if (HOOK_CallHooks( WH_KEYBOARD, remove ? HC_ACTION : HC_NOREMOVE,
298 LOWORD(msg->wParam), msg->lParam, TRUE ))
300 /* skip this message */
301 HOOK_CallHooks( WH_CBT, HCBT_KEYSKIPPED, LOWORD(msg->wParam), msg->lParam, TRUE );
308 /***********************************************************************
309 * process_raw_mouse_message
311 static void process_raw_mouse_message( MSG *msg, BOOL remove )
319 HWND hWndScope = msg->hwnd;
321 /* find the window to dispatch this mouse message to */
324 GetGUIThreadInfo( GetCurrentThreadId(), &info );
325 if (!(msg->hwnd = info.hwndCapture))
327 /* If no capture HWND, find window which contains the mouse position.
328 * Also find the position of the cursor hot spot (hittest) */
329 if (!IsWindow(hWndScope)) hWndScope = 0;
330 if (!(msg->hwnd = WINPOS_WindowFromPoint( hWndScope, msg->pt, &hittest )))
331 msg->hwnd = GetDesktopWindow();
334 event.message = msg->message;
335 event.time = msg->time;
336 event.hwnd = msg->hwnd;
337 event.paramL = msg->pt.x;
338 event.paramH = msg->pt.y;
339 HOOK_CallHooks( WH_JOURNALRECORD, HC_ACTION, 0, (LPARAM)&event, TRUE );
341 /* translate double clicks */
343 if ((msg->message == WM_LBUTTONDOWN) ||
344 (msg->message == WM_RBUTTONDOWN) ||
345 (msg->message == WM_MBUTTONDOWN))
347 BOOL update = remove;
348 /* translate double clicks -
349 * note that ...MOUSEMOVEs can slip in between
350 * ...BUTTONDOWN and ...BUTTONDBLCLK messages */
352 if ((info.flags & (GUI_INMENUMODE|GUI_INMOVESIZE)) ||
353 hittest != HTCLIENT ||
354 (GetClassLongA( msg->hwnd, GCL_STYLE ) & CS_DBLCLKS))
356 if ((msg->message == clk_msg.message) &&
357 (msg->hwnd == clk_msg.hwnd) &&
358 (msg->time - clk_msg.time < GetDoubleClickTime()) &&
359 (abs(msg->pt.x - clk_msg.pt.x) < GetSystemMetrics(SM_CXDOUBLECLK)/2) &&
360 (abs(msg->pt.y - clk_msg.pt.y) < GetSystemMetrics(SM_CYDOUBLECLK)/2))
362 msg->message += (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN);
370 /* update static double click conditions */
371 if (update) clk_msg = *msg;
375 /* Note: windows has no concept of a non-client wheel message */
376 if (hittest != HTCLIENT && msg->message != WM_MOUSEWHEEL)
378 msg->message += WM_NCMOUSEMOVE - WM_MOUSEMOVE;
379 msg->wParam = hittest;
383 /* coordinates don't get translated while tracking a menu */
384 /* FIXME: should differentiate popups and top-level menus */
385 if (!(info.flags & GUI_INMENUMODE)) ScreenToClient( msg->hwnd, &pt );
387 msg->lParam = MAKELONG( pt.x, pt.y );
391 /***********************************************************************
392 * process_cooked_mouse_message
394 * returns TRUE if the contents of 'msg' should be passed to the application
396 static BOOL process_cooked_mouse_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
398 MOUSEHOOKSTRUCT hook;
399 INT hittest = HTCLIENT;
400 UINT raw_message = msg->message;
403 if (msg->message >= WM_NCMOUSEFIRST && msg->message <= WM_NCMOUSELAST)
405 raw_message += WM_MOUSEFIRST - WM_NCMOUSEFIRST;
406 hittest = msg->wParam;
408 if (raw_message == WM_LBUTTONDBLCLK ||
409 raw_message == WM_RBUTTONDBLCLK ||
410 raw_message == WM_MBUTTONDBLCLK)
412 raw_message += WM_LBUTTONDOWN - WM_LBUTTONDBLCLK;
416 hook.hwnd = msg->hwnd;
417 hook.wHitTestCode = hittest;
418 hook.dwExtraInfo = extra_info;
419 if (HOOK_CallHooks( WH_MOUSE, remove ? HC_ACTION : HC_NOREMOVE,
420 msg->message, (LPARAM)&hook, TRUE ))
423 hook.hwnd = msg->hwnd;
424 hook.wHitTestCode = hittest;
425 hook.dwExtraInfo = extra_info;
426 HOOK_CallHooks( WH_CBT, HCBT_CLICKSKIPPED, msg->message, (LPARAM)&hook, TRUE );
430 if ((hittest == HTERROR) || (hittest == HTNOWHERE))
432 SendMessageA( msg->hwnd, WM_SETCURSOR, (WPARAM)msg->hwnd,
433 MAKELONG( hittest, raw_message ));
437 if (!remove || GetCapture()) return TRUE;
441 if ((raw_message == WM_LBUTTONDOWN) ||
442 (raw_message == WM_RBUTTONDOWN) ||
443 (raw_message == WM_MBUTTONDOWN))
445 /* Send the WM_PARENTNOTIFY,
446 * note that even for double/nonclient clicks
447 * notification message is still WM_L/M/RBUTTONDOWN.
449 MSG_SendParentNotify( msg->hwnd, raw_message, 0, msg->pt );
451 /* Activate the window if needed */
453 if (msg->hwnd != GetActiveWindow())
455 HWND hwndTop = msg->hwnd;
458 if ((GetWindowLongW( hwndTop, GWL_STYLE ) & (WS_POPUP|WS_CHILD)) != WS_CHILD) break;
459 hwndTop = GetParent( hwndTop );
462 if (hwndTop && hwndTop != GetDesktopWindow())
464 LONG ret = SendMessageA( msg->hwnd, WM_MOUSEACTIVATE, (WPARAM)hwndTop,
465 MAKELONG( hittest, raw_message ) );
468 case MA_NOACTIVATEANDEAT:
473 case MA_ACTIVATEANDEAT:
478 if (!FOCUS_MouseActivate( hwndTop )) eatMsg = TRUE;
481 WARN( "unknown WM_MOUSEACTIVATE code %ld\n", ret );
488 /* send the WM_SETCURSOR message */
490 /* Windows sends the normal mouse message as the message parameter
491 in the WM_SETCURSOR message even if it's non-client mouse message */
492 SendMessageA( msg->hwnd, WM_SETCURSOR, (WPARAM)msg->hwnd,
493 MAKELONG( hittest, raw_message ));
499 /***********************************************************************
500 * process_hardware_message
502 * returns TRUE if the contents of 'msg' should be passed to the application
504 BOOL MSG_process_raw_hardware_message( MSG *msg, ULONG_PTR extra_info, HWND hwnd_filter,
505 UINT first, UINT last, BOOL remove )
507 if (is_keyboard_message( msg->message ))
509 process_raw_keyboard_message( msg );
511 else if (is_mouse_message( msg->message ))
513 process_raw_mouse_message( msg, remove );
517 ERR( "unknown message type %x\n", msg->message );
520 return check_message_filter( msg, hwnd_filter, first, last );
524 /***********************************************************************
525 * MSG_process_cooked_hardware_message
527 * returns TRUE if the contents of 'msg' should be passed to the application
529 BOOL MSG_process_cooked_hardware_message( MSG *msg, ULONG_PTR extra_info, BOOL remove )
531 if (is_keyboard_message( msg->message ))
532 return process_cooked_keyboard_message( msg, remove );
534 if (is_mouse_message( msg->message ))
535 return process_cooked_mouse_message( msg, extra_info, remove );
537 ERR( "unknown message type %x\n", msg->message );
542 /***********************************************************************
543 * WaitMessage (USER.112) Suspend thread pending messages
544 * WaitMessage (USER32.@) Suspend thread pending messages
546 * WaitMessage() suspends a thread until events appear in the thread's
549 BOOL WINAPI WaitMessage(void)
551 return (MsgWaitForMultipleObjectsEx( 0, NULL, INFINITE, QS_ALLINPUT, 0 ) != WAIT_FAILED);
555 /***********************************************************************
556 * MsgWaitForMultipleObjectsEx (USER32.@)
558 DWORD WINAPI MsgWaitForMultipleObjectsEx( DWORD count, CONST HANDLE *pHandles,
559 DWORD timeout, DWORD mask, DWORD flags )
561 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
563 MESSAGEQUEUE *msgQueue;
565 if (count > MAXIMUM_WAIT_OBJECTS-1)
567 SetLastError( ERROR_INVALID_PARAMETER );
571 if (!(msgQueue = QUEUE_Current())) return WAIT_FAILED;
573 /* set the queue mask */
574 SERVER_START_REQ( set_queue_mask )
576 req->wake_mask = (flags & MWMO_INPUTAVAILABLE) ? mask : 0;
577 req->changed_mask = mask;
579 wine_server_call( req );
583 /* Add the thread event to the handle list */
584 for (i = 0; i < count; i++) handles[i] = pHandles[i];
585 handles[count] = msgQueue->server_queue;
587 ReleaseThunkLock( &lock );
588 if (USER_Driver.pMsgWaitForMultipleObjectsEx)
590 ret = USER_Driver.pMsgWaitForMultipleObjectsEx( count+1, handles, timeout, mask, flags );
591 if (ret == count+1) ret = count; /* pretend the msg queue is ready */
594 ret = WaitForMultipleObjectsEx( count+1, handles, flags & MWMO_WAITALL,
595 timeout, flags & MWMO_ALERTABLE );
596 if (lock) RestoreThunkLock( lock );
601 /***********************************************************************
602 * MsgWaitForMultipleObjects (USER32.@)
604 DWORD WINAPI MsgWaitForMultipleObjects( DWORD count, CONST HANDLE *handles,
605 BOOL wait_all, DWORD timeout, DWORD mask )
607 return MsgWaitForMultipleObjectsEx( count, handles, timeout, mask,
608 wait_all ? MWMO_WAITALL : 0 );
612 /***********************************************************************
613 * WaitForInputIdle (USER32.@)
615 DWORD WINAPI WaitForInputIdle( HANDLE hProcess, DWORD dwTimeOut )
617 DWORD start_time, elapsed, ret;
618 HANDLE idle_event = (HANDLE)-1;
620 SERVER_START_REQ( wait_input_idle )
622 req->handle = hProcess;
623 req->timeout = dwTimeOut;
624 if (!(ret = wine_server_call_err( req ))) idle_event = reply->event;
627 if (ret) return WAIT_FAILED; /* error */
628 if (!idle_event) return 0; /* no event to wait on */
630 start_time = GetTickCount();
633 TRACE("waiting for %p\n", idle_event );
636 ret = MsgWaitForMultipleObjects ( 1, &idle_event, FALSE, dwTimeOut - elapsed, QS_SENDMESSAGE );
639 case WAIT_OBJECT_0+1:
640 process_sent_messages();
644 TRACE("timeout or error\n");
650 if (dwTimeOut != INFINITE)
652 elapsed = GetTickCount() - start_time;
653 if (elapsed > dwTimeOut)
663 /***********************************************************************
664 * UserYield (USER.332)
666 void WINAPI UserYield16(void)
670 /* Handle sent messages */
671 process_sent_messages();
674 ReleaseThunkLock(&count);
677 RestoreThunkLock(count);
678 /* Handle sent messages again */
679 process_sent_messages();
684 /***********************************************************************
685 * TranslateMessage (USER32.@)
687 * Implementation of TranslateMessage.
689 * TranslateMessage translates virtual-key messages into character-messages,
691 * WM_KEYDOWN/WM_KEYUP combinations produce a WM_CHAR or WM_DEADCHAR message.
692 * ditto replacing WM_* with WM_SYS*
693 * This produces WM_CHAR messages only for keys mapped to ASCII characters
694 * by the keyboard driver.
696 * If the message is WM_KEYDOWN, WM_KEYUP, WM_SYSKEYDOWN, or WM_SYSKEYUP, the
697 * return value is nonzero, regardless of the translation.
700 BOOL WINAPI TranslateMessage( const MSG *msg )
707 if (msg->message >= WM_KEYFIRST && msg->message <= WM_KEYLAST)
709 TRACE_(key)("(%s, %04X, %08lX)\n",
710 SPY_GetMsgName(msg->message, msg->hwnd), msg->wParam, msg->lParam );
712 /* Return code must be TRUE no matter what! */
716 if ((msg->message != WM_KEYDOWN) && (msg->message != WM_SYSKEYDOWN)) return rc;
718 TRACE_(key)("Translating key %s (%04x), scancode %02x\n",
719 SPY_GetVKeyName(msg->wParam), msg->wParam, LOBYTE(HIWORD(msg->lParam)));
721 GetKeyboardState( state );
722 /* FIXME : should handle ToUnicode yielding 2 */
723 switch (ToUnicode(msg->wParam, HIWORD(msg->lParam), state, wp, 2, 0))
726 message = (msg->message == WM_KEYDOWN) ? WM_CHAR : WM_SYSCHAR;
727 TRACE_(key)("1 -> PostMessage(%s)\n", SPY_GetMsgName(message, msg->hwnd));
728 PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
732 message = (msg->message == WM_KEYDOWN) ? WM_DEADCHAR : WM_SYSDEADCHAR;
733 TRACE_(key)("-1 -> PostMessage(%s)\n", SPY_GetMsgName(message, msg->hwnd));
734 PostMessageW( msg->hwnd, message, wp[0], msg->lParam );
741 /***********************************************************************
742 * DispatchMessageA (USER32.@)
744 LONG WINAPI DispatchMessageA( const MSG* msg )
751 /* Process timer messages */
752 if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
756 /* HOOK_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
758 /* before calling window proc, verify whether timer is still valid;
759 there's a slim chance that the application kills the timer
760 between GetMessage and DispatchMessage API calls */
761 if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (WNDPROC)msg->lParam))
762 return 0; /* invalid winproc */
764 return CallWindowProcA( (WNDPROC)msg->lParam, msg->hwnd,
765 msg->message, msg->wParam, GetTickCount() );
769 if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
771 if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
774 if (wndPtr == WND_OTHER_PROCESS)
776 if (IsWindow( msg->hwnd ))
777 ERR( "cannot dispatch msg to other process window %p\n", msg->hwnd );
778 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
781 if (!(winproc = wndPtr->winproc))
783 WIN_ReleasePtr( wndPtr );
786 painting = (msg->message == WM_PAINT);
787 if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
788 WIN_ReleasePtr( wndPtr );
789 /* hook_CallHooks32A( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
791 SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
792 msg->wParam, msg->lParam );
793 retval = CallWindowProcA( winproc, msg->hwnd, msg->message,
794 msg->wParam, msg->lParam );
795 SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
796 msg->wParam, msg->lParam );
798 if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
800 BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
801 wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
802 WIN_ReleasePtr( wndPtr );
805 ERR( "BeginPaint not called on WM_PAINT for hwnd %p!\n", msg->hwnd );
806 /* Validate the update region to avoid infinite WM_PAINT loop */
807 RedrawWindow( msg->hwnd, NULL, 0,
808 RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
815 /***********************************************************************
816 * DispatchMessageW (USER32.@) Process Message
818 * Process the message specified in the structure *_msg_.
820 * If the lpMsg parameter points to a WM_TIMER message and the
821 * parameter of the WM_TIMER message is not NULL, the lParam parameter
822 * points to the function that is called instead of the window
825 * The message must be valid.
829 * DispatchMessage() returns the result of the window procedure invoked.
836 LONG WINAPI DispatchMessageW( const MSG* msg )
843 /* Process timer messages */
844 if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
848 /* HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
850 /* before calling window proc, verify whether timer is still valid;
851 there's a slim chance that the application kills the timer
852 between GetMessage and DispatchMessage API calls */
853 if (!TIMER_IsTimerValid(msg->hwnd, (UINT) msg->wParam, (WNDPROC)msg->lParam))
854 return 0; /* invalid winproc */
856 return CallWindowProcW( (WNDPROC)msg->lParam, msg->hwnd,
857 msg->message, msg->wParam, GetTickCount() );
861 if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
863 if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
866 if (wndPtr == WND_OTHER_PROCESS)
868 if (IsWindow( msg->hwnd ))
869 ERR( "cannot dispatch msg to other process window %p\n", msg->hwnd );
870 SetLastError( ERROR_INVALID_WINDOW_HANDLE );
873 if (!(winproc = wndPtr->winproc))
875 WIN_ReleasePtr( wndPtr );
878 painting = (msg->message == WM_PAINT);
879 if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
880 WIN_ReleasePtr( wndPtr );
881 /* HOOK_CallHooks32W( WH_CALLWNDPROC, HC_ACTION, 0, FIXME ); */
883 SPY_EnterMessage( SPY_DISPATCHMESSAGE, msg->hwnd, msg->message,
884 msg->wParam, msg->lParam );
885 retval = CallWindowProcW( winproc, msg->hwnd, msg->message,
886 msg->wParam, msg->lParam );
887 SPY_ExitMessage( SPY_RESULT_OK, msg->hwnd, msg->message, retval,
888 msg->wParam, msg->lParam );
890 if (painting && (wndPtr = WIN_GetPtr( msg->hwnd )) && (wndPtr != WND_OTHER_PROCESS))
892 BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
893 wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
894 WIN_ReleasePtr( wndPtr );
897 ERR( "BeginPaint not called on WM_PAINT for hwnd %p!\n", msg->hwnd );
898 /* Validate the update region to avoid infinite WM_PAINT loop */
899 RedrawWindow( msg->hwnd, NULL, 0,
900 RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
907 /***********************************************************************
908 * RegisterWindowMessage (USER.118)
909 * RegisterWindowMessageA (USER32.@)
911 WORD WINAPI RegisterWindowMessageA( LPCSTR str )
914 return GlobalAddAtomA( str );
918 /***********************************************************************
919 * RegisterWindowMessageW (USER32.@)
921 WORD WINAPI RegisterWindowMessageW( LPCWSTR str )
924 return GlobalAddAtomW( str );
928 /***********************************************************************
929 * BroadcastSystemMessage (USER32.@)
930 * BroadcastSystemMessageA (USER32.@)
932 LONG WINAPI BroadcastSystemMessage(
933 DWORD dwFlags,LPDWORD recipients,UINT uMessage,WPARAM wParam,
936 if ((*recipients & BSM_APPLICATIONS)||
937 (*recipients == BSM_ALLCOMPONENTS))
939 FIXME("(%08lx,%08lx,%08x,%08x,%08lx): semi-stub!\n",
940 dwFlags,*recipients,uMessage,wParam,lParam);
941 PostMessageA(HWND_BROADCAST,uMessage,wParam,lParam);
946 FIXME("(%08lx,%08lx,%08x,%08x,%08lx): stub!\n",
947 dwFlags,*recipients,uMessage,wParam,lParam);