2 * Window messaging support
4 * Copyright 2001 Alexandre Julliard
13 #include "wine/unicode.h"
14 #include "wine/server.h"
22 #include "debugtools.h"
24 DEFAULT_DEBUG_CHANNEL(msg);
26 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
27 #define WM_NCMOUSELAST WM_NCMBUTTONDBLCLK
29 #define MAX_PACK_COUNT 4
31 /* description of the data fields that need to be packed along with a sent message */
35 const void *data[MAX_PACK_COUNT];
36 size_t size[MAX_PACK_COUNT];
39 /* info about the message currently being received by the current thread */
40 struct received_message_info
42 enum message_type type;
44 UINT flags; /* InSendMessageEx return flags */
47 /* structure to group all parameters for sent messages of the various kinds */
48 struct send_message_info
50 enum message_type type;
55 UINT flags; /* flags for SendMessageTimeout */
56 UINT timeout; /* timeout for SendMessageTimeout */
57 SENDASYNCPROC callback; /* callback function for SendMessageCallback */
58 ULONG_PTR data; /* callback data */
62 /* flag for messages that contain pointers */
63 /* 32 messages per entry, messages 0..31 map to bits 0..31 */
65 #define SET(msg) (1 << ((msg) & 31))
67 static const unsigned int message_pointer_flags[] =
70 SET(WM_CREATE) | SET(WM_SETTEXT) | SET(WM_GETTEXT) |
71 SET(WM_WININICHANGE) | SET(WM_DEVMODECHANGE),
73 SET(WM_GETMINMAXINFO) | SET(WM_DRAWITEM) | SET(WM_MEASUREITEM) | SET(WM_DELETEITEM) |
76 SET(WM_WINDOWPOSCHANGING) | SET(WM_WINDOWPOSCHANGED) | SET(WM_COPYDATA) |
77 SET(WM_NOTIFY) | SET(WM_HELP),
79 SET(WM_STYLECHANGING) | SET(WM_STYLECHANGED),
81 SET(WM_NCCREATE) | SET(WM_NCCALCSIZE) | SET(WM_GETDLGCODE),
83 SET(EM_GETSEL) | SET(EM_GETRECT) | SET(EM_SETRECT) | SET(EM_SETRECTNP),
85 SET(EM_REPLACESEL) | SET(EM_GETLINE) | SET(EM_SETTABSTOPS),
87 SET(SBM_GETRANGE) | SET(SBM_SETSCROLLINFO) | SET(SBM_GETSCROLLINFO),
93 SET(CB_GETEDITSEL) | SET(CB_ADDSTRING) | SET(CB_DIR) | SET(CB_GETLBTEXT) |
94 SET(CB_INSERTSTRING) | SET(CB_FINDSTRING) | SET(CB_SELECTSTRING) |
95 SET(CB_GETDROPPEDCONTROLRECT) | SET(CB_FINDSTRINGEXACT),
99 SET(LB_ADDSTRING) | SET(LB_INSERTSTRING) | SET(LB_GETTEXT) | SET(LB_SELECTSTRING) |
100 SET(LB_DIR) | SET(LB_FINDSTRING) |
101 SET(LB_GETSELITEMS) | SET(LB_SETTABSTOPS) | SET(LB_ADDFILE) | SET(LB_GETITEMRECT),
103 SET(LB_FINDSTRINGEXACT),
109 SET(WM_NEXTMENU) | SET(WM_SIZING) | SET(WM_MOVING) | SET(WM_DEVICECHANGE),
111 SET(WM_MDICREATE) | SET(WM_MDIGETACTIVE) | SET(WM_DROPOBJECT) |
112 SET(WM_QUERYDROPOBJECT) | SET(WM_DRAGLOOP) | SET(WM_DRAGSELECT) | SET(WM_DRAGMOVE),
126 SET(WM_ASKCBFORMATNAME)
129 /* flags for messages that contain Unicode strings */
130 static const unsigned int message_unicode_flags[] =
133 SET(WM_CREATE) | SET(WM_SETTEXT) | SET(WM_GETTEXT) | SET(WM_GETTEXTLENGTH) |
134 SET(WM_WININICHANGE) | SET(WM_DEVMODECHANGE),
146 SET(EM_REPLACESEL) | SET(EM_GETLINE) | SET(EM_SETPASSWORDCHAR),
150 SET(WM_CHAR) | SET(WM_DEADCHAR) | SET(WM_SYSCHAR) | SET(WM_SYSDEADCHAR),
154 SET(CB_ADDSTRING) | SET(CB_DIR) | SET(CB_GETLBTEXT) | SET(CB_GETLBTEXTLEN) |
155 SET(CB_INSERTSTRING) | SET(CB_FINDSTRING) | SET(CB_SELECTSTRING) | SET(CB_FINDSTRINGEXACT),
159 SET(LB_ADDSTRING) | SET(LB_INSERTSTRING) | SET(LB_GETTEXT) | SET(LB_GETTEXTLEN) |
160 SET(LB_SELECTSTRING) | SET(LB_DIR) | SET(LB_FINDSTRING) | SET(LB_ADDFILE),
162 SET(LB_FINDSTRINGEXACT),
184 SET(WM_PAINTCLIPBOARD) | SET(WM_SIZECLIPBOARD) | SET(WM_ASKCBFORMATNAME)
187 /* check whether a given message type includes pointers */
188 inline static int is_pointer_message( UINT message )
190 if (message >= 8*sizeof(message_pointer_flags)) return FALSE;
191 return (message_pointer_flags[message / 32] & SET(message)) != 0;
194 /* check whether a given message type contains Unicode (or ASCII) chars */
195 inline static int is_unicode_message( UINT message )
197 if (message >= 8*sizeof(message_unicode_flags)) return FALSE;
198 return (message_unicode_flags[message / 32] & SET(message)) != 0;
203 /* compute the total size of the packed data */
204 inline static size_t get_data_total_size( const struct packed_message *data )
208 for (i = 0; i < data->count; i++) total += data->size[i];
212 /* copy all the data of a packed message into a single dest buffer */
213 inline static void copy_all_data( void *dest, const struct packed_message *data )
216 for (i = 0; i < data->count; i++)
218 memcpy( dest, data->data[i], data->size[i] );
219 dest = (char *)dest + data->size[i];
223 /* add a data field to a packed message */
224 inline static void push_data( struct packed_message *data, const void *ptr, size_t size )
226 data->data[data->count] = ptr;
227 data->size[data->count] = size;
231 /* add a string to a packed message */
232 inline static void push_string( struct packed_message *data, LPCWSTR str )
234 push_data( data, str, (strlenW(str) + 1) * sizeof(WCHAR) );
237 /* retrieve a pointer to data from a packed message and increment the buffer pointer */
238 inline static void *get_data( void **buffer, size_t size )
241 *buffer = (char *)*buffer + size;
245 /* make sure that the buffer contains a valid null-terminated Unicode string */
246 inline static BOOL check_string( LPCWSTR str, size_t size )
248 for (size /= sizeof(WCHAR); size; size--, str++)
249 if (!*str) return TRUE;
253 /* make sure that there is space for 'size' bytes in buffer, growing it if needed */
254 inline static void *get_buffer_space( void **buffer, size_t size )
257 if (!(ret = HeapReAlloc( GetProcessHeap(), 0, *buffer, size )))
258 HeapFree( GetProcessHeap(), 0, *buffer );
263 /* retrieve a string pointer from packed data */
264 inline static LPWSTR get_string( void **buffer )
266 return get_data( buffer, (strlenW( (LPWSTR)*buffer ) + 1) * sizeof(WCHAR) );
269 /* check whether a combobox expects strings or ids in CB_ADDSTRING/CB_INSERTSTRING */
270 inline static BOOL combobox_has_strings( HWND hwnd )
272 DWORD style = GetWindowLongA( hwnd, GWL_STYLE );
273 return (!(style & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) || (style & CBS_HASSTRINGS));
276 /* check whether a listbox expects strings or ids in LB_ADDSTRING/LB_INSERTSTRING */
277 inline static BOOL listbox_has_strings( HWND hwnd )
279 DWORD style = GetWindowLongA( hwnd, GWL_STYLE );
280 return (!(style & (LBS_OWNERDRAWFIXED | LBS_OWNERDRAWVARIABLE)) || (style & LBS_HASSTRINGS));
283 /* check if hwnd is a broadcast magic handle */
284 inline static BOOL is_broadcast( HWND hwnd )
286 return (hwnd == HWND_BROADCAST || hwnd == HWND_TOPMOST);
290 /***********************************************************************
291 * broadcast_message_callback
293 * Helper callback for broadcasting messages.
295 static BOOL CALLBACK broadcast_message_callback( HWND hwnd, LPARAM lparam )
297 struct send_message_info *info = (struct send_message_info *)lparam;
298 if (!(GetWindowLongW( hwnd, GWL_STYLE ) & (WS_POPUP|WS_CAPTION))) return TRUE;
302 SendMessageTimeoutW( hwnd, info->msg, info->wparam, info->lparam,
303 info->flags, info->timeout, NULL );
306 SendMessageTimeoutA( hwnd, info->msg, info->wparam, info->lparam,
307 info->flags, info->timeout, NULL );
310 SendNotifyMessageW( hwnd, info->msg, info->wparam, info->lparam );
313 SendMessageCallbackW( hwnd, info->msg, info->wparam, info->lparam,
314 info->callback, info->data );
317 PostMessageW( hwnd, info->msg, info->wparam, info->lparam );
320 ERR( "bad type %d\n", info->type );
327 /***********************************************************************
330 * Convert the wparam of an ASCII message to Unicode.
332 static WPARAM map_wparam_AtoW( UINT message, WPARAM wparam )
334 if (message == WM_CHARTOITEM ||
335 message == EM_SETPASSWORDCHAR ||
336 message == WM_CHAR ||
337 message == WM_DEADCHAR ||
338 message == WM_SYSCHAR ||
339 message == WM_SYSDEADCHAR ||
340 message == WM_MENUCHAR)
342 char ch = LOWORD(wparam);
344 MultiByteToWideChar(CP_ACP, 0, &ch, 1, &wch, 1);
345 wparam = MAKEWPARAM( wch, HIWORD(wparam) );
351 /***********************************************************************
354 * Convert the wparam of a Unicode message to ASCII.
356 static WPARAM map_wparam_WtoA( UINT message, WPARAM wparam )
358 if (message == WM_CHARTOITEM ||
359 message == EM_SETPASSWORDCHAR ||
360 message == WM_CHAR ||
361 message == WM_DEADCHAR ||
362 message == WM_SYSCHAR ||
363 message == WM_SYSDEADCHAR ||
364 message == WM_MENUCHAR)
366 WCHAR wch = LOWORD(wparam);
368 WideCharToMultiByte( CP_ACP, 0, &wch, 1, &ch, 1, NULL, NULL );
369 wparam = MAKEWPARAM( ch, HIWORD(wparam) );
375 /***********************************************************************
378 * Pack a message for sending to another process.
379 * Return the size of the data we expect in the message reply.
380 * Set data->count to -1 if there is an error.
382 static size_t pack_message( HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam,
383 struct packed_message *data )
391 CREATESTRUCTW *cs = (CREATESTRUCTW *)lparam;
392 push_data( data, cs, sizeof(*cs) );
393 if (HIWORD(cs->lpszName)) push_string( data, cs->lpszName );
394 if (HIWORD(cs->lpszClass)) push_string( data, cs->lpszClass );
398 case WM_ASKCBFORMATNAME:
399 return wparam * sizeof(WCHAR);
401 case WM_WININICHANGE:
402 case WM_DEVMODECHANGE:
405 case CB_FINDSTRINGEXACT:
406 case CB_SELECTSTRING:
410 case LB_FINDSTRINGEXACT:
411 case LB_SELECTSTRING:
413 push_string( data, (LPWSTR)lparam );
415 case WM_GETMINMAXINFO:
416 push_data( data, (MINMAXINFO *)lparam, sizeof(MINMAXINFO) );
417 return sizeof(MINMAXINFO);
419 push_data( data, (DRAWITEMSTRUCT *)lparam, sizeof(DRAWITEMSTRUCT) );
422 push_data( data, (MEASUREITEMSTRUCT *)lparam, sizeof(MEASUREITEMSTRUCT) );
423 return sizeof(MEASUREITEMSTRUCT);
425 push_data( data, (DELETEITEMSTRUCT *)lparam, sizeof(DELETEITEMSTRUCT) );
428 push_data( data, (COMPAREITEMSTRUCT *)lparam, sizeof(COMPAREITEMSTRUCT) );
430 case WM_WINDOWPOSCHANGING:
431 case WM_WINDOWPOSCHANGED:
432 push_data( data, (WINDOWPOS *)lparam, sizeof(WINDOWPOS) );
433 return sizeof(WINDOWPOS);
436 COPYDATASTRUCT *cp = (COPYDATASTRUCT *)lparam;
437 push_data( data, cp, sizeof(*cp) );
438 if (cp->lpData) push_data( data, cp->lpData, cp->cbData );
442 /* WM_NOTIFY cannot be sent across processes (MSDN) */
446 push_data( data, (HELPINFO *)lparam, sizeof(HELPINFO) );
448 case WM_STYLECHANGING:
449 case WM_STYLECHANGED:
450 push_data( data, (STYLESTRUCT *)lparam, sizeof(STYLESTRUCT) );
455 push_data( data, (RECT *)lparam, sizeof(RECT) );
460 NCCALCSIZE_PARAMS *nc = (NCCALCSIZE_PARAMS *)lparam;
461 push_data( data, nc, sizeof(*nc) );
462 push_data( data, nc->lppos, sizeof(*nc->lppos) );
463 return sizeof(*nc) + sizeof(*nc->lppos);
466 if (lparam) push_data( data, (MSG *)lparam, sizeof(MSG) );
468 case SBM_SETSCROLLINFO:
469 push_data( data, (SCROLLINFO *)lparam, sizeof(SCROLLINFO) );
471 case SBM_GETSCROLLINFO:
472 push_data( data, (SCROLLINFO *)lparam, sizeof(SCROLLINFO) );
473 return sizeof(SCROLLINFO);
479 if (wparam) size += sizeof(DWORD);
480 if (lparam) size += sizeof(DWORD);
485 case CB_GETDROPPEDCONTROLRECT:
489 push_data( data, (RECT *)lparam, sizeof(RECT) );
493 WORD *pw = (WORD *)lparam;
494 push_data( data, pw, sizeof(*pw) );
495 return *pw * sizeof(WCHAR);
499 if (wparam) push_data( data, (UINT *)lparam, sizeof(UINT) * wparam );
502 case CB_INSERTSTRING:
503 if (combobox_has_strings( hwnd )) push_string( data, (LPWSTR)lparam );
506 if (!combobox_has_strings( hwnd )) return sizeof(ULONG_PTR);
507 return (SendMessageW( hwnd, CB_GETLBTEXTLEN, wparam, 0 ) + 1) * sizeof(WCHAR);
509 case LB_INSERTSTRING:
510 if (listbox_has_strings( hwnd )) push_string( data, (LPWSTR)lparam );
513 if (!listbox_has_strings( hwnd )) return sizeof(ULONG_PTR);
514 return (SendMessageW( hwnd, LB_GETTEXTLEN, wparam, 0 ) + 1) * sizeof(WCHAR);
516 return wparam * sizeof(UINT);
518 push_data( data, (MDINEXTMENU *)lparam, sizeof(MDINEXTMENU) );
519 return sizeof(MDINEXTMENU);
522 push_data( data, (RECT *)lparam, sizeof(RECT) );
526 MDICREATESTRUCTW *cs = (MDICREATESTRUCTW *)lparam;
527 push_data( data, cs, sizeof(*cs) );
528 if (HIWORD(cs->szTitle)) push_string( data, cs->szTitle );
529 if (HIWORD(cs->szClass)) push_string( data, cs->szClass );
532 case WM_MDIGETACTIVE:
533 if (lparam) return sizeof(BOOL);
536 /* these contain an HFONT */
539 /* these contain an HDC */
542 case WM_ICONERASEBKGND:
544 case WM_CTLCOLORMSGBOX:
545 case WM_CTLCOLOREDIT:
546 case WM_CTLCOLORLISTBOX:
549 case WM_CTLCOLORSCROLLBAR:
550 case WM_CTLCOLORSTATIC:
553 /* these contain an HGLOBAL */
554 case WM_PAINTCLIPBOARD:
555 case WM_SIZECLIPBOARD:
556 case WM_DDE_INITIATE:
558 case WM_DDE_UNADVISE:
563 /* these contain pointers */
565 case WM_QUERYDROPOBJECT:
569 case WM_DEVICECHANGE:
570 FIXME( "msg %x (%s) not supported yet\n", message, SPY_GetMsgName(message) );
578 /***********************************************************************
581 * Unpack a message received from another process.
583 static BOOL unpack_message( HWND hwnd, UINT message, WPARAM *wparam, LPARAM *lparam,
584 void **buffer, size_t size )
593 CREATESTRUCTW *cs = *buffer;
594 WCHAR *str = (WCHAR *)(cs + 1);
595 if (size < sizeof(*cs)) return FALSE;
597 if (HIWORD(cs->lpszName))
599 if (!check_string( str, size )) return FALSE;
601 size -= (strlenW(str) + 1) * sizeof(WCHAR);
602 str += strlenW(str) + 1;
604 if (HIWORD(cs->lpszClass))
606 if (!check_string( str, size )) return FALSE;
612 case WM_ASKCBFORMATNAME:
613 if (!get_buffer_space( buffer, (*wparam * sizeof(WCHAR)) )) return FALSE;
616 case WM_WININICHANGE:
617 case WM_DEVMODECHANGE:
620 case CB_FINDSTRINGEXACT:
621 case CB_SELECTSTRING:
625 case LB_FINDSTRINGEXACT:
626 case LB_SELECTSTRING:
628 if (!check_string( *buffer, size )) return FALSE;
630 case WM_GETMINMAXINFO:
631 minsize = sizeof(MINMAXINFO);
634 minsize = sizeof(DRAWITEMSTRUCT);
637 minsize = sizeof(MEASUREITEMSTRUCT);
640 minsize = sizeof(DELETEITEMSTRUCT);
643 minsize = sizeof(COMPAREITEMSTRUCT);
645 case WM_WINDOWPOSCHANGING:
646 case WM_WINDOWPOSCHANGED:
647 minsize = sizeof(WINDOWPOS);
651 COPYDATASTRUCT *cp = *buffer;
652 if (size < sizeof(*cp)) return FALSE;
655 minsize = sizeof(*cp) + cp->cbData;
661 /* WM_NOTIFY cannot be sent across processes (MSDN) */
664 minsize = sizeof(HELPINFO);
666 case WM_STYLECHANGING:
667 case WM_STYLECHANGED:
668 minsize = sizeof(STYLESTRUCT);
671 if (!*wparam) minsize = sizeof(RECT);
674 NCCALCSIZE_PARAMS *nc = *buffer;
675 if (size < sizeof(*nc) + sizeof(*nc->lppos)) return FALSE;
676 nc->lppos = (WINDOWPOS *)(nc + 1);
680 if (!*lparam) return TRUE;
681 minsize = sizeof(MSG);
683 case SBM_SETSCROLLINFO:
684 minsize = sizeof(SCROLLINFO);
686 case SBM_GETSCROLLINFO:
687 if (!get_buffer_space( buffer, sizeof(SCROLLINFO ))) return FALSE;
692 if (*wparam || *lparam)
694 if (!get_buffer_space( buffer, 2*sizeof(DWORD) )) return FALSE;
695 if (*wparam) *wparam = (WPARAM)*buffer;
696 if (*lparam) *lparam = (LPARAM)((DWORD *)*buffer + 1);
701 case CB_GETDROPPEDCONTROLRECT:
702 if (!get_buffer_space( buffer, sizeof(RECT) )) return FALSE;
706 minsize = sizeof(RECT);
711 if (size < sizeof(WORD)) return FALSE;
712 len = *(WORD *)*buffer;
713 if (!get_buffer_space( buffer, (len + 1) * sizeof(WCHAR) )) return FALSE;
714 *lparam = (LPARAM)*buffer + sizeof(WORD); /* don't erase WORD at start of buffer */
719 if (!*wparam) return TRUE;
720 minsize = *wparam * sizeof(UINT);
723 case CB_INSERTSTRING:
725 case LB_INSERTSTRING:
726 if (!*buffer) return TRUE;
727 if (!check_string( *buffer, size )) return FALSE;
731 size = sizeof(ULONG_PTR);
732 if (combobox_has_strings( hwnd ))
733 size = (SendMessageW( hwnd, CB_GETLBTEXTLEN, *wparam, 0 ) + 1) * sizeof(WCHAR);
734 if (!get_buffer_space( buffer, size )) return FALSE;
739 size = sizeof(ULONG_PTR);
740 if (listbox_has_strings( hwnd ))
741 size = (SendMessageW( hwnd, LB_GETTEXTLEN, *wparam, 0 ) + 1) * sizeof(WCHAR);
742 if (!get_buffer_space( buffer, size )) return FALSE;
746 if (!get_buffer_space( buffer, *wparam * sizeof(UINT) )) return FALSE;
749 minsize = sizeof(MDINEXTMENU);
750 if (!get_buffer_space( buffer, sizeof(MDINEXTMENU) )) return FALSE;
754 minsize = sizeof(RECT);
755 if (!get_buffer_space( buffer, sizeof(RECT) )) return FALSE;
759 MDICREATESTRUCTW *cs = *buffer;
760 WCHAR *str = (WCHAR *)(cs + 1);
761 if (size < sizeof(*cs)) return FALSE;
763 if (HIWORD(cs->szTitle))
765 if (!check_string( str, size )) return FALSE;
767 size -= (strlenW(str) + 1) * sizeof(WCHAR);
768 str += strlenW(str) + 1;
770 if (HIWORD(cs->szClass))
772 if (!check_string( str, size )) return FALSE;
777 case WM_MDIGETACTIVE:
778 if (!*lparam) return TRUE;
779 if (!get_buffer_space( buffer, sizeof(BOOL) )) return FALSE;
782 /* these contain an HFONT */
785 /* these contain an HDC */
788 case WM_ICONERASEBKGND:
790 case WM_CTLCOLORMSGBOX:
791 case WM_CTLCOLOREDIT:
792 case WM_CTLCOLORLISTBOX:
795 case WM_CTLCOLORSCROLLBAR:
796 case WM_CTLCOLORSTATIC:
799 /* these contain an HGLOBAL */
800 case WM_PAINTCLIPBOARD:
801 case WM_SIZECLIPBOARD:
802 case WM_DDE_INITIATE:
804 case WM_DDE_UNADVISE:
809 /* these contain pointers */
811 case WM_QUERYDROPOBJECT:
815 case WM_DEVICECHANGE:
816 FIXME( "msg %x (%s) not supported yet\n", message, SPY_GetMsgName(message) );
820 return TRUE; /* message doesn't need any unpacking */
823 /* default exit for most messages: check minsize and store buffer in lparam */
824 if (size < minsize) return FALSE;
825 *lparam = (LPARAM)*buffer;
830 /***********************************************************************
833 * Pack a reply to a message for sending to another process.
835 static void pack_reply( HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam,
836 LRESULT res, struct packed_message *data )
843 push_data( data, (CREATESTRUCTW *)lparam, sizeof(CREATESTRUCTW) );
848 push_data( data, (WCHAR *)lparam, (res + 1) * sizeof(WCHAR) );
850 case WM_GETMINMAXINFO:
851 push_data( data, (MINMAXINFO *)lparam, sizeof(MINMAXINFO) );
854 push_data( data, (MEASUREITEMSTRUCT *)lparam, sizeof(MEASUREITEMSTRUCT) );
856 case WM_WINDOWPOSCHANGING:
857 case WM_WINDOWPOSCHANGED:
858 push_data( data, (WINDOWPOS *)lparam, sizeof(WINDOWPOS) );
861 if (lparam) push_data( data, (MSG *)lparam, sizeof(MSG) );
863 case SBM_GETSCROLLINFO:
864 push_data( data, (SCROLLINFO *)lparam, sizeof(SCROLLINFO) );
868 case CB_GETDROPPEDCONTROLRECT:
871 push_data( data, (RECT *)lparam, sizeof(RECT) );
875 WORD *ptr = (WORD *)lparam;
876 push_data( data, ptr, ptr[-1] * sizeof(WCHAR) );
880 push_data( data, (UINT *)lparam, wparam * sizeof(UINT) );
882 case WM_MDIGETACTIVE:
883 if (lparam) push_data( data, (BOOL *)lparam, sizeof(BOOL) );
887 push_data( data, (RECT *)lparam, sizeof(RECT) );
890 NCCALCSIZE_PARAMS *nc = (NCCALCSIZE_PARAMS *)lparam;
891 push_data( data, nc, sizeof(*nc) );
892 push_data( data, nc->lppos, sizeof(*nc->lppos) );
898 if (wparam) push_data( data, (DWORD *)wparam, sizeof(DWORD) );
899 if (lparam) push_data( data, (DWORD *)lparam, sizeof(DWORD) );
902 push_data( data, (MDINEXTMENU *)lparam, sizeof(MDINEXTMENU) );
905 push_data( data, (MDICREATESTRUCTW *)lparam, sizeof(MDICREATESTRUCTW) );
907 case WM_ASKCBFORMATNAME:
908 push_data( data, (WCHAR *)lparam, (strlenW((WCHAR *)lparam) + 1) * sizeof(WCHAR) );
914 /***********************************************************************
917 * Unpack a message reply received from another process.
919 static void unpack_reply( HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam,
920 void *buffer, size_t size )
927 CREATESTRUCTW *cs = (CREATESTRUCTW *)lparam;
928 LPCWSTR name = cs->lpszName, class = cs->lpszClass;
929 memcpy( cs, buffer, min( sizeof(*cs), size ));
930 cs->lpszName = name; /* restore the original pointers */
931 cs->lpszClass = class;
935 case WM_ASKCBFORMATNAME:
936 memcpy( (WCHAR *)lparam, buffer, min( wparam*sizeof(WCHAR), size ));
938 case WM_GETMINMAXINFO:
939 memcpy( (MINMAXINFO *)lparam, buffer, min( sizeof(MINMAXINFO), size ));
942 memcpy( (MEASUREITEMSTRUCT *)lparam, buffer, min( sizeof(MEASUREITEMSTRUCT), size ));
944 case WM_WINDOWPOSCHANGING:
945 case WM_WINDOWPOSCHANGED:
946 memcpy( (WINDOWPOS *)lparam, buffer, min( sizeof(WINDOWPOS), size ));
949 if (lparam) memcpy( (MSG *)lparam, buffer, min( sizeof(MSG), size ));
951 case SBM_GETSCROLLINFO:
952 memcpy( (SCROLLINFO *)lparam, buffer, min( sizeof(SCROLLINFO), size ));
955 case CB_GETDROPPEDCONTROLRECT:
959 memcpy( (RECT *)lparam, buffer, min( sizeof(RECT), size ));
962 size = min( size, *(WORD *)lparam );
963 memcpy( (WCHAR *)lparam, buffer, size );
966 memcpy( (UINT *)lparam, buffer, min( wparam*sizeof(UINT), size ));
970 memcpy( (WCHAR *)lparam, buffer, size );
973 memcpy( (MDINEXTMENU *)lparam, buffer, min( sizeof(MDINEXTMENU), size ));
975 case WM_MDIGETACTIVE:
976 if (lparam) memcpy( (BOOL *)lparam, buffer, min( sizeof(BOOL), size ));
980 memcpy( (RECT *)lparam, buffer, min( sizeof(RECT), size ));
983 NCCALCSIZE_PARAMS *nc = (NCCALCSIZE_PARAMS *)lparam;
984 WINDOWPOS *wp = nc->lppos;
985 memcpy( nc, buffer, min( sizeof(*nc), size ));
986 if (size > sizeof(*nc))
989 memcpy( wp, (NCCALCSIZE_PARAMS*)buffer + 1, min( sizeof(*wp), size ));
991 nc->lppos = wp; /* restore the original pointer */
999 memcpy( (DWORD *)wparam, buffer, min( sizeof(DWORD), size ));
1000 if (size <= sizeof(DWORD)) break;
1001 size -= sizeof(DWORD);
1002 buffer = (DWORD *)buffer + 1;
1004 if (lparam) memcpy( (DWORD *)lparam, buffer, min( sizeof(DWORD), size ));
1008 MDICREATESTRUCTW *cs = (MDICREATESTRUCTW *)lparam;
1009 LPCWSTR title = cs->szTitle, class = cs->szClass;
1010 memcpy( cs, buffer, min( sizeof(*cs), size ));
1011 cs->szTitle = title; /* restore the original pointers */
1012 cs->szClass = class;
1016 ERR( "should not happen: unexpected message %x\n", message );
1022 /***********************************************************************
1025 * Send a reply to a sent message.
1027 static void reply_message( struct received_message_info *info, LRESULT result, BOOL remove )
1029 struct packed_message data;
1030 int replied = info->flags & ISMEX_REPLIED;
1032 if (info->flags & ISMEX_NOTIFY) return; /* notify messages don't get replies */
1033 if (!remove && replied) return; /* replied already */
1036 info->flags |= ISMEX_REPLIED;
1038 if (info->type == MSG_OTHER_PROCESS && !replied)
1040 pack_reply( info->msg.hwnd, info->msg.message, info->msg.wParam,
1041 info->msg.lParam, result, &data );
1044 size_t total = get_data_total_size( &data );
1046 if (total > REQUEST_MAX_VAR_SIZE)
1048 FIXME( "inter-process msg data size %d not supported yet, expect trouble\n",
1050 total = REQUEST_MAX_VAR_SIZE;
1053 SERVER_START_VAR_REQ( reply_message, total )
1055 req->result = result;
1056 req->remove = remove;
1057 copy_all_data( server_data_ptr(req), &data );
1065 SERVER_START_REQ( reply_message )
1067 req->result = result;
1068 req->remove = remove;
1075 /***********************************************************************
1078 * Call a window procedure and the corresponding hooks.
1080 static LRESULT call_window_proc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam, BOOL unicode )
1085 /* FIXME: should check for exiting queue */
1087 /* first the WH_CALLWNDPROC hook */
1088 if (HOOK_IsHooked( WH_CALLWNDPROC ))
1091 cwp.lParam = lparam;
1092 cwp.wParam = wparam;
1095 if (unicode) HOOK_CallHooksW( WH_CALLWNDPROC, HC_ACTION, 1, (LPARAM)&cwp );
1096 else HOOK_CallHooksA( WH_CALLWNDPROC, HC_ACTION, 1, (LPARAM)&cwp );
1097 lparam = cwp.lParam;
1098 wparam = cwp.wParam;
1103 /* now call the window procedure */
1106 if (!(winproc = (WNDPROC)GetWindowLongW( hwnd, GWL_WNDPROC ))) return 0;
1107 result = CallWindowProcW( winproc, hwnd, msg, wparam, lparam );
1111 if (!(winproc = (WNDPROC)GetWindowLongA( hwnd, GWL_WNDPROC ))) return 0;
1112 result = CallWindowProcA( winproc, hwnd, msg, wparam, lparam );
1115 /* and finally the WH_CALLWNDPROCRET hook */
1116 if (HOOK_IsHooked( WH_CALLWNDPROCRET ))
1119 cwp.lResult = result;
1120 cwp.lParam = lparam;
1121 cwp.wParam = wparam;
1124 if (unicode) HOOK_CallHooksW( WH_CALLWNDPROCRET, HC_ACTION, 1, (LPARAM)&cwp );
1125 else HOOK_CallHooksA( WH_CALLWNDPROCRET, HC_ACTION, 1, (LPARAM)&cwp );
1131 /***********************************************************************
1134 * Peek for a message matching the given parameters. Return FALSE if none available.
1135 * All pending sent messages are processed before returning.
1137 BOOL MSG_peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, int flags )
1141 ULONG_PTR extra_info = 0;
1142 MESSAGEQUEUE *queue = QUEUE_Current();
1143 struct received_message_info info, *old_info;
1145 if (!first && !last) last = ~0;
1149 void *buffer = NULL;
1152 SERVER_START_VAR_REQ( get_message, REQUEST_MAX_VAR_SIZE )
1155 req->get_win = hwnd;
1156 req->get_first = first;
1157 req->get_last = last;
1158 if ((ret = !SERVER_CALL()))
1160 info.type = req->type;
1161 info.msg.hwnd = req->win;
1162 info.msg.message = req->msg;
1163 info.msg.wParam = req->wparam;
1164 info.msg.lParam = req->lparam;
1165 info.msg.time = req->time;
1166 info.msg.pt.x = req->x;
1167 info.msg.pt.y = req->y;
1168 extra_info = req->info;
1170 if ((size = server_data_size(req)))
1172 if (!(buffer = HeapAlloc( GetProcessHeap(), 0, size )))
1174 ERR("out of memory for message data\n");
1177 else memcpy( buffer, server_data_ptr(req), size );
1183 if (!ret) return FALSE; /* no message available */
1185 TRACE( "got type %d msg %x hwnd %x wp %x lp %lx\n",
1186 info.type, info.msg.message, info.msg.hwnd, info.msg.wParam, info.msg.lParam );
1192 info.flags = ISMEX_SEND;
1195 info.flags = ISMEX_NOTIFY;
1198 info.flags = ISMEX_CALLBACK;
1200 case MSG_OTHER_PROCESS:
1201 info.flags = ISMEX_SEND;
1202 if (!unpack_message( info.msg.hwnd, info.msg.message, &info.msg.wParam,
1203 &info.msg.lParam, &buffer, size ))
1205 ERR( "invalid packed message %x (%s) hwnd %x wp %x lp %lx size %d\n",
1206 info.msg.message, SPY_GetMsgName(info.msg.message), info.msg.hwnd,
1207 info.msg.wParam, info.msg.lParam, size );
1209 reply_message( &info, 0, TRUE );
1215 case MSG_HARDWARE_RAW:
1216 if (!MSG_process_raw_hardware_message( &info.msg, extra_info,
1217 hwnd, first, last, flags & GET_MSG_REMOVE ))
1220 case MSG_HARDWARE_COOKED:
1221 if (!MSG_process_cooked_hardware_message( &info.msg, flags & GET_MSG_REMOVE ))
1223 flags |= GET_MSG_REMOVE_LAST;
1226 queue->GetMessageExtraInfoVal = extra_info;
1230 /* if we get here, we have a sent message; call the window procedure */
1231 old_info = queue->receive_info;
1232 queue->receive_info = &info;
1233 result = call_window_proc( info.msg.hwnd, info.msg.message, info.msg.wParam,
1234 info.msg.lParam, (info.type != MSG_ASCII) );
1235 reply_message( &info, result, TRUE );
1236 queue->receive_info = old_info;
1238 if (buffer) HeapFree( GetProcessHeap(), 0, buffer );
1247 /***********************************************************************
1248 * wait_message_reply
1250 * Wait until a sent message gets replied to.
1252 static void wait_message_reply( UINT flags )
1254 MESSAGEQUEUE *queue;
1256 if (!(queue = QUEUE_Current())) return;
1260 unsigned int wake_bits = 0, changed_bits = 0;
1263 SERVER_START_REQ( set_queue_mask )
1265 req->wake_mask = (flags & SMTO_BLOCK) ? 0 : QS_SENDMESSAGE;
1266 req->changed_mask = QS_SMRESULT | req->wake_mask;
1270 wake_bits = req->wake_bits;
1271 changed_bits = req->changed_bits;
1276 if (changed_bits & QS_SMRESULT) return; /* got a result */
1277 if (wake_bits & QS_SENDMESSAGE)
1279 /* Process the sent message immediately */
1281 MSG_peek_message( &msg, 0, 0, 0, GET_MSG_REMOVE | GET_MSG_SENT_ONLY );
1285 /* now wait for it */
1287 ReleaseThunkLock( &dwlc );
1289 if (USER_Driver.pMsgWaitForMultipleObjectsEx)
1290 res = USER_Driver.pMsgWaitForMultipleObjectsEx( 1, &queue->server_queue,
1293 res = WaitForSingleObject( queue->server_queue, INFINITE );
1295 if (dwlc) RestoreThunkLock( dwlc );
1299 /***********************************************************************
1300 * put_message_in_queue
1302 * Put a sent message into the destination queue.
1303 * For inter-process message, reply_size is set to expected size of reply data.
1305 static BOOL put_message_in_queue( DWORD dest_tid, const struct send_message_info *info,
1306 size_t *reply_size )
1311 /* FIXME: should check for exiting queue */
1313 if (info->type != MSG_NOTIFY &&
1314 info->type != MSG_CALLBACK &&
1315 info->type != MSG_POSTED &&
1316 info->timeout != INFINITE)
1317 timeout = info->timeout;
1319 if (info->type == MSG_OTHER_PROCESS)
1321 struct packed_message data;
1322 *reply_size = pack_message( info->hwnd, info->msg, info->wparam, info->lparam, &data );
1324 if (data.count == -1)
1326 WARN( "cannot pack message %x\n", info->msg );
1330 if (data.size[0]) /* need to send extra data along with the message */
1332 size_t total = get_data_total_size( &data );
1334 if (total > REQUEST_MAX_VAR_SIZE)
1336 FIXME( "inter-process msg data size %d not supported yet, expect trouble\n",
1338 total = REQUEST_MAX_VAR_SIZE;
1341 SERVER_START_VAR_REQ( send_message, total )
1343 req->id = (void *)dest_tid;
1344 req->type = MSG_OTHER_PROCESS;
1345 req->win = info->hwnd;
1346 req->msg = info->msg;
1347 req->wparam = info->wparam;
1348 req->lparam = info->lparam;
1349 req->time = GetCurrentTime();
1350 req->timeout = timeout;
1351 copy_all_data( server_data_ptr(req), &data );
1352 res = SERVER_CALL();
1359 /* no extra data, or not inter-process message */
1360 SERVER_START_REQ( send_message )
1362 req->id = (void *)dest_tid;
1363 req->type = info->type;
1364 req->win = info->hwnd;
1365 req->msg = info->msg;
1366 req->wparam = info->wparam;
1367 req->lparam = info->lparam;
1368 req->time = GetCurrentTime();
1369 req->timeout = timeout;
1370 res = SERVER_CALL();
1377 if (res == STATUS_INVALID_PARAMETER)
1378 /* FIXME: find a STATUS_ value for this one */
1379 SetLastError( ERROR_INVALID_THREAD_ID );
1381 SetLastError( RtlNtStatusToDosError(res) );
1387 /***********************************************************************
1390 * Retrieve a message reply from the server.
1392 static LRESULT retrieve_reply( const struct send_message_info *info,
1393 size_t reply_size, LRESULT *result )
1399 if (reply_size > REQUEST_MAX_VAR_SIZE)
1401 WARN( "reply_size %d too large, reply may be truncated\n", reply_size );
1402 reply_size = REQUEST_MAX_VAR_SIZE;
1404 SERVER_START_VAR_REQ( get_message_reply, reply_size )
1407 if (!(status = SERVER_CALL()))
1409 *result = req->result;
1410 unpack_reply( info->hwnd, info->msg, info->wparam, info->lparam,
1411 server_data_ptr(req), server_data_size(req) );
1418 SERVER_START_REQ( get_message_reply )
1421 if (!(status = SERVER_CALL())) *result = req->result;
1426 TRACE( "hwnd %x msg %x (%s) wp %x lp %lx got reply %lx (err=%ld)\n",
1427 info->hwnd, info->msg, SPY_GetMsgName(info->msg), info->wparam,
1428 info->lparam, *result, status );
1430 if (!status) return 1;
1431 if (status == STATUS_TIMEOUT) SetLastError(0); /* timeout */
1432 else SetLastError( RtlNtStatusToDosError(status) );
1437 /***********************************************************************
1438 * send_inter_thread_message
1440 static LRESULT send_inter_thread_message( DWORD dest_tid, const struct send_message_info *info,
1445 size_t reply_size = 0;
1447 TRACE( "hwnd %x msg %x (%s) wp %x lp %lx\n",
1448 info->hwnd, info->msg, SPY_GetMsgName(info->msg), info->wparam, info->lparam );
1450 if (!put_message_in_queue( dest_tid, info, &reply_size )) return 0;
1452 /* there's no reply to wait for on notify/callback messages */
1453 if (info->type == MSG_NOTIFY || info->type == MSG_CALLBACK) return 1;
1455 locks = WIN_SuspendWndsLock();
1457 wait_message_reply( info->flags );
1458 ret = retrieve_reply( info, reply_size, res_ptr );
1460 WIN_RestoreWndsLock( locks );
1465 /***********************************************************************
1466 * SendMessageTimeoutW (USER32.@)
1468 LRESULT WINAPI SendMessageTimeoutW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam,
1469 UINT flags, UINT timeout, LPDWORD res_ptr )
1471 struct send_message_info info;
1472 DWORD dest_tid, dest_pid;
1473 LRESULT ret, result;
1475 info.type = MSG_UNICODE;
1478 info.wparam = wparam;
1479 info.lparam = lparam;
1481 info.timeout = timeout;
1483 if (is_broadcast(hwnd))
1485 EnumWindows( broadcast_message_callback, (LPARAM)&info );
1486 if (res_ptr) *res_ptr = 1;
1490 SPY_EnterMessage( SPY_SENDMESSAGE, hwnd, msg, wparam, lparam );
1492 dest_tid = GetWindowThreadProcessId( hwnd, &dest_pid );
1494 if (dest_tid == GetCurrentThreadId())
1496 result = call_window_proc( hwnd, msg, wparam, lparam, TRUE );
1501 if (dest_pid != GetCurrentProcessId()) info.type = MSG_OTHER_PROCESS;
1502 ret = send_inter_thread_message( dest_tid, &info, &result );
1505 SPY_ExitMessage( SPY_RESULT_OK, hwnd, msg, result, wparam, lparam );
1506 if (ret && res_ptr) *res_ptr = result;
1511 /***********************************************************************
1512 * SendMessageTimeoutA (USER32.@)
1514 LRESULT WINAPI SendMessageTimeoutA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam,
1515 UINT flags, UINT timeout, LPDWORD res_ptr )
1517 struct send_message_info info;
1518 DWORD dest_tid, dest_pid;
1519 LRESULT ret, result;
1521 info.type = MSG_ASCII;
1524 info.wparam = wparam;
1525 info.lparam = lparam;
1527 info.timeout = timeout;
1529 if (is_broadcast(hwnd))
1531 EnumWindows( broadcast_message_callback, (LPARAM)&info );
1532 if (res_ptr) *res_ptr = 1;
1536 SPY_EnterMessage( SPY_SENDMESSAGE, hwnd, msg, wparam, lparam );
1538 dest_tid = GetWindowThreadProcessId( hwnd, &dest_pid );
1540 if (dest_tid == GetCurrentThreadId())
1542 result = call_window_proc( hwnd, msg, wparam, lparam, FALSE );
1545 else if (dest_pid == GetCurrentProcessId())
1547 ret = send_inter_thread_message( dest_tid, &info, &result );
1551 /* inter-process message: need to map to Unicode */
1552 info.type = MSG_OTHER_PROCESS;
1553 if (is_unicode_message( info.msg ))
1555 if (WINPROC_MapMsg32ATo32W( info.hwnd, info.msg, &info.wparam, &info.lparam ) == -1)
1557 ret = send_inter_thread_message( dest_tid, &info, &result );
1558 result = WINPROC_UnmapMsg32ATo32W( info.hwnd, info.msg, info.wparam,
1559 info.lparam, result );
1561 else ret = send_inter_thread_message( dest_tid, &info, &result );
1563 SPY_ExitMessage( SPY_RESULT_OK, hwnd, msg, result, wparam, lparam );
1564 if (ret && res_ptr) *res_ptr = result;
1569 /***********************************************************************
1570 * SendMessageW (USER32.@)
1572 LRESULT WINAPI SendMessageW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
1575 SendMessageTimeoutW( hwnd, msg, wparam, lparam, SMTO_NORMAL, INFINITE, &res );
1580 /***********************************************************************
1581 * SendMessageA (USER32.@)
1583 LRESULT WINAPI SendMessageA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
1586 SendMessageTimeoutA( hwnd, msg, wparam, lparam, SMTO_NORMAL, INFINITE, &res );
1591 /***********************************************************************
1592 * SendNotifyMessageA (USER32.@)
1594 BOOL WINAPI SendNotifyMessageA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
1596 return SendNotifyMessageW( hwnd, msg, map_wparam_AtoW( msg, wparam ), lparam );
1600 /***********************************************************************
1601 * SendNotifyMessageW (USER32.@)
1603 BOOL WINAPI SendNotifyMessageW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
1605 struct send_message_info info;
1609 if (is_pointer_message(msg))
1611 SetLastError(ERROR_INVALID_PARAMETER);
1615 info.type = MSG_NOTIFY;
1618 info.wparam = wparam;
1619 info.lparam = lparam;
1621 if (is_broadcast(hwnd))
1623 EnumWindows( broadcast_message_callback, (LPARAM)&info );
1627 dest_tid = GetWindowThreadProcessId( hwnd, NULL );
1629 if (dest_tid == GetCurrentThreadId())
1631 call_window_proc( hwnd, msg, wparam, lparam, TRUE );
1634 return send_inter_thread_message( dest_tid, &info, &result );
1638 /***********************************************************************
1639 * SendMessageCallbackA (USER32.@)
1641 BOOL WINAPI SendMessageCallbackA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam,
1642 SENDASYNCPROC callback, ULONG_PTR data )
1644 return SendMessageCallbackW( hwnd, msg, map_wparam_AtoW( msg, wparam ),
1645 lparam, callback, data );
1649 /***********************************************************************
1650 * SendMessageCallbackW (USER32.@)
1652 BOOL WINAPI SendMessageCallbackW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam,
1653 SENDASYNCPROC callback, ULONG_PTR data )
1655 struct send_message_info info;
1659 if (is_pointer_message(msg))
1661 SetLastError(ERROR_INVALID_PARAMETER);
1665 info.type = MSG_CALLBACK;
1668 info.wparam = wparam;
1669 info.lparam = lparam;
1670 info.callback = callback;
1673 if (is_broadcast(hwnd))
1675 EnumWindows( broadcast_message_callback, (LPARAM)&info );
1679 dest_tid = GetWindowThreadProcessId( hwnd, NULL );
1681 if (dest_tid == GetCurrentThreadId())
1683 result = call_window_proc( hwnd, msg, wparam, lparam, TRUE );
1684 callback( hwnd, msg, data, result );
1687 FIXME( "callback will not be called\n" );
1688 return send_inter_thread_message( dest_tid, &info, &result );
1692 /***********************************************************************
1693 * ReplyMessage (USER32.@)
1695 BOOL WINAPI ReplyMessage( LRESULT result )
1697 MESSAGEQUEUE *queue = QUEUE_Current();
1698 struct received_message_info *info = queue->receive_info;
1700 if (!info) return FALSE;
1701 reply_message( info, result, FALSE );
1706 /***********************************************************************
1707 * InSendMessage (USER32.@)
1709 BOOL WINAPI InSendMessage(void)
1711 return (InSendMessageEx(NULL) & (ISMEX_SEND|ISMEX_REPLIED)) == ISMEX_SEND;
1715 /***********************************************************************
1716 * InSendMessageEx (USER32.@)
1718 DWORD WINAPI InSendMessageEx( LPVOID reserved )
1720 MESSAGEQUEUE *queue = QUEUE_Current();
1721 struct received_message_info *info = queue->receive_info;
1723 if (info) return info->flags;
1724 return ISMEX_NOSEND;
1728 /***********************************************************************
1729 * PostMessageA (USER32.@)
1731 BOOL WINAPI PostMessageA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
1733 return PostMessageW( hwnd, msg, map_wparam_AtoW( msg, wparam ), lparam );
1737 /***********************************************************************
1738 * PostMessageW (USER32.@)
1740 BOOL WINAPI PostMessageW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam )
1742 struct send_message_info info;
1744 if (is_pointer_message( msg ))
1746 SetLastError( ERROR_INVALID_PARAMETER );
1750 info.type = MSG_POSTED;
1753 info.wparam = wparam;
1754 info.lparam = lparam;
1756 if (is_broadcast(hwnd))
1758 EnumWindows( broadcast_message_callback, (LPARAM)&info );
1761 return put_message_in_queue( GetWindowThreadProcessId( hwnd, NULL ), &info, NULL );
1765 /**********************************************************************
1766 * PostThreadMessageA (USER32.@)
1768 BOOL WINAPI PostThreadMessageA( DWORD thread, UINT msg, WPARAM wparam, LPARAM lparam )
1770 return PostThreadMessageW( thread, msg, map_wparam_AtoW( msg, wparam ), lparam );
1774 /**********************************************************************
1775 * PostThreadMessageW (USER32.@)
1777 BOOL WINAPI PostThreadMessageW( DWORD thread, UINT msg, WPARAM wparam, LPARAM lparam )
1779 struct send_message_info info;
1781 if (is_pointer_message( msg ))
1783 SetLastError( ERROR_INVALID_PARAMETER );
1787 info.type = MSG_POSTED;
1790 info.wparam = wparam;
1791 info.lparam = lparam;
1792 return put_message_in_queue( thread, &info, NULL );
1796 /***********************************************************************
1797 * PostQuitMessage (USER32.@)
1799 void WINAPI PostQuitMessage( INT exitCode )
1801 PostThreadMessageW( GetCurrentThreadId(), WM_QUIT, exitCode, 0 );
1805 /***********************************************************************
1806 * PeekMessageW (USER32.@)
1808 BOOL WINAPI PeekMessageW( MSG *msg_out, HWND hwnd, UINT first, UINT last, UINT flags )
1810 MESSAGEQUEUE *queue;
1814 /* check for graphics events */
1815 if (USER_Driver.pMsgWaitForMultipleObjectsEx)
1816 USER_Driver.pMsgWaitForMultipleObjectsEx( 0, NULL, 0, 0, 0 );
1818 locks = WIN_SuspendWndsLock();
1820 if (!MSG_peek_message( &msg, hwnd, first, last,
1821 (flags & PM_REMOVE) ? GET_MSG_REMOVE : 0 ))
1823 /* FIXME: should be done before checking for hw events */
1824 MSG_JournalPlayBackMsg();
1826 if (!(flags & PM_NOYIELD))
1829 ReleaseThunkLock(&count);
1830 if (count) RestoreThunkLock(count);
1832 WIN_RestoreWndsLock( locks );
1836 WIN_RestoreWndsLock( locks );
1838 /* need to fill the window handle for WM_PAINT message */
1839 if (msg.message == WM_PAINT)
1841 if (!(msg.hwnd = WIN_FindWinToRepaint( hwnd ))) return FALSE;
1843 if (IsIconic( msg.hwnd ) && GetClassLongA( msg.hwnd, GCL_HICON ))
1845 msg.message = WM_PAINTICON;
1849 /* check hwnd filter */
1850 if (hwnd && msg.hwnd != hwnd && !IsChild( hwnd, msg.hwnd )) return FALSE;
1852 /* clear internal paint flag */
1853 RedrawWindow( msg.hwnd, NULL, 0, RDW_NOINTERNALPAINT | RDW_NOCHILDREN );
1856 if ((queue = QUEUE_Current()))
1858 queue->GetMessageTimeVal = msg.time;
1859 queue->GetMessagePosVal = MAKELONG( msg.pt.x, msg.pt.y );
1862 /* We got a message */
1863 if (flags & PM_REMOVE)
1865 if (msg.message == WM_KEYDOWN || msg.message == WM_SYSKEYDOWN)
1867 BYTE *p = &QueueKeyStateTable[msg.wParam & 0xff];
1869 if (!(*p & 0x80)) *p ^= 0x01;
1872 else if (msg.message == WM_KEYUP || msg.message == WM_SYSKEYUP)
1873 QueueKeyStateTable[msg.wParam & 0xff] &= ~0x80;
1876 HOOK_CallHooksW( WH_GETMESSAGE, HC_ACTION, flags & PM_REMOVE, (LPARAM)&msg );
1878 /* copy back our internal safe copy of message data to msg_out.
1879 * msg_out is a variable from the *program*, so it can't be used
1880 * internally as it can get "corrupted" by our use of SendMessage()
1881 * (back to the program) inside the message handling itself. */
1887 /***********************************************************************
1888 * PeekMessageA (USER32.@)
1890 BOOL WINAPI PeekMessageA( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags )
1892 BOOL ret = PeekMessageW( msg, hwnd, first, last, flags );
1893 if (ret) msg->wParam = map_wparam_WtoA( msg->message, msg->wParam );
1898 /***********************************************************************
1899 * GetMessageW (USER32.@)
1901 BOOL WINAPI GetMessageW( MSG *msg, HWND hwnd, UINT first, UINT last )
1903 MESSAGEQUEUE *queue = QUEUE_Current();
1906 mask = QS_POSTMESSAGE | QS_SENDMESSAGE; /* Always selected */
1909 if ((first <= WM_KEYLAST) && (last >= WM_KEYFIRST)) mask |= QS_KEY;
1910 if ( ((first <= WM_MOUSELAST) && (last >= WM_MOUSEFIRST)) ||
1911 ((first <= WM_NCMOUSELAST) && (last >= WM_NCMOUSEFIRST)) ) mask |= QS_MOUSE;
1912 if ((first <= WM_TIMER) && (last >= WM_TIMER)) mask |= QS_TIMER;
1913 if ((first <= WM_SYSTIMER) && (last >= WM_SYSTIMER)) mask |= QS_TIMER;
1914 if ((first <= WM_PAINT) && (last >= WM_PAINT)) mask |= QS_PAINT;
1916 else mask |= QS_MOUSE | QS_KEY | QS_TIMER | QS_PAINT;
1918 locks = WIN_SuspendWndsLock();
1920 while (!PeekMessageW( msg, hwnd, first, last, PM_REMOVE ))
1922 /* wait until one of the bits is set */
1923 unsigned int wake_bits = 0, changed_bits = 0;
1926 SERVER_START_REQ( set_queue_mask )
1928 req->wake_mask = QS_SENDMESSAGE;
1929 req->changed_mask = mask;
1933 wake_bits = req->wake_bits;
1934 changed_bits = req->changed_bits;
1939 if (changed_bits & mask) continue;
1940 if (wake_bits & QS_SENDMESSAGE) continue;
1942 TRACE( "(%04x) mask=%08x, bits=%08x, changed=%08x, waiting\n",
1943 queue->self, mask, wake_bits, changed_bits );
1945 ReleaseThunkLock( &dwlc );
1946 if (USER_Driver.pMsgWaitForMultipleObjectsEx)
1947 USER_Driver.pMsgWaitForMultipleObjectsEx( 1, &queue->server_queue, INFINITE, 0, 0 );
1949 WaitForSingleObject( queue->server_queue, INFINITE );
1950 if (dwlc) RestoreThunkLock( dwlc );
1953 WIN_RestoreWndsLock( locks );
1955 return (msg->message != WM_QUIT);
1959 /***********************************************************************
1960 * GetMessageA (USER32.@)
1962 BOOL WINAPI GetMessageA( MSG *msg, HWND hwnd, UINT first, UINT last )
1964 GetMessageW( msg, hwnd, first, last );
1965 msg->wParam = map_wparam_WtoA( msg->message, msg->wParam );
1966 return (msg->message != WM_QUIT);
1970 /***********************************************************************
1971 * SetMessageQueue (USER32.@)
1973 BOOL WINAPI SetMessageQueue( INT size )
1975 /* now obsolete the message queue will be expanded dynamically as necessary */