dlls/user/msg16.c

   1 /*
   2  * 16-bit messaging support
   3  *
   4  * Copyright 2001 Alexandre Julliard
   5  *
   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.
  10  *
  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.
  15  *
  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
  19  */
  20
  21 #include "wine/winuser16.h"
  22 #include "winerror.h"
  23 #include "hook.h"
  24 #include "message.h"
  25 #include "spy.h"
  26 #include "task.h"
  27 #include "thread.h"
  28 #include "win.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(msg);
  32
  33 DWORD USER16_AlertableWait = 0;
  34
  35 /***********************************************************************
  36  *              SendMessage  (USER.111)
  37  */
  38 LRESULT WINAPI SendMessage16( HWND16 hwnd16, UINT16 msg, WPARAM16 wparam, LPARAM lparam )
  39 {
  40     LRESULT result;
  41     HWND hwnd = WIN_Handle32( hwnd16 );
  42
  43     if (hwnd != HWND_BROADCAST && WIN_IsCurrentThread(hwnd))
  44     {
  45         /* call 16-bit window proc directly */
  46         WNDPROC16 winproc;
  47
  48         /* first the WH_CALLWNDPROC hook */
  49         if (HOOK_IsHooked( WH_CALLWNDPROC ))
  50         {
  51             CWPSTRUCT16 cwp;
  52             SEGPTR seg_cwp;
  53
  54             cwp.hwnd    = hwnd16;
  55             cwp.message = msg;
  56             cwp.wParam  = wparam;
  57             cwp.lParam  = lparam;
  58             seg_cwp = MapLS( &cwp );
  59             HOOK_CallHooks16( WH_CALLWNDPROC, HC_ACTION, 1, seg_cwp );
  60             UnMapLS( seg_cwp );
  61             if (cwp.hwnd != hwnd16)
  62             {
  63                 hwnd16 = cwp.hwnd;
  64                 hwnd = WIN_Handle32( hwnd16 );
  65             }
  66             msg    = cwp.message;
  67             wparam = cwp.wParam;
  68             lparam = cwp.lParam;
  69         }
  70
  71         if (!(winproc = (WNDPROC16)GetWindowLong16( hwnd16, GWL_WNDPROC ))) return 0;
  72
  73         SPY_EnterMessage( SPY_SENDMESSAGE16, hwnd, msg, wparam, lparam );
  74         result = CallWindowProc16( (WNDPROC16)winproc, hwnd16, msg, wparam, lparam );
  75         SPY_ExitMessage( SPY_RESULT_OK16, hwnd, msg, result, wparam, lparam );
  76     }
  77     else  /* map to 32-bit unicode for inter-thread/process message */
  78     {
  79         UINT msg32;
  80         WPARAM wparam32;
  81
  82         if (WINPROC_MapMsg16To32W( hwnd, msg, wparam, &msg32, &wparam32, &lparam ) == -1)
  83             return 0;
  84         result = WINPROC_UnmapMsg16To32W( hwnd, msg32, wparam32, lparam,
  85                                           SendMessageW( hwnd, msg32, wparam32, lparam ) );
  86     }
  87     return result;
  88 }
  89
  90
  91 /***********************************************************************
  92  *              PostMessage  (USER.110)
  93  */
  94 BOOL16 WINAPI PostMessage16( HWND16 hwnd16, UINT16 msg, WPARAM16 wparam, LPARAM lparam )
  95 {
  96     WPARAM wparam32;
  97     UINT msg32;
  98     HWND hwnd = WIN_Handle32( hwnd16 );
  99
 100     switch (WINPROC_MapMsg16To32W( hwnd, msg, wparam, &msg32, &wparam32, &lparam ))
 101     {
 102     case 0:
 103         return PostMessageW( hwnd, msg32, wparam32, lparam );
 104     case 1:
 105         ERR( "16-bit message 0x%04x contains pointer, cannot post\n", msg );
 106         return FALSE;
 107     default:
 108         return FALSE;
 109     }
 110 }
 111
 112
 113 /***********************************************************************
 114  *              PostAppMessage (USER.116)
 115  *              PostAppMessage16 (USER32.@)
 116  */
 117 BOOL16 WINAPI PostAppMessage16( HTASK16 hTask, UINT16 msg, WPARAM16 wparam, LPARAM lparam )
 118 {
 119     WPARAM wparam32;
 120     UINT msg32;
 121     TDB *pTask = TASK_GetPtr( hTask );
 122     if (!pTask) return FALSE;
 123
 124     switch (WINPROC_MapMsg16To32W( 0, msg, wparam, &msg32, &wparam32, &lparam ))
 125     {
 126     case 0:
 127         return PostThreadMessageW( (DWORD)pTask->teb->tid, msg32, wparam32, lparam );
 128     case 1:
 129         ERR( "16-bit message %x contains pointer, cannot post\n", msg );
 130         return FALSE;
 131     default:
 132         return FALSE;
 133     }
 134 }
 135
 136
 137 /***********************************************************************
 138  *              InSendMessage  (USER.192)
 139  */
 140 BOOL16 WINAPI InSendMessage16(void)
 141 {
 142     return InSendMessage();
 143 }
 144
 145
 146 /***********************************************************************
 147  *              ReplyMessage  (USER.115)
 148  */
 149 void WINAPI ReplyMessage16( LRESULT result )
 150 {
 151     ReplyMessage( result );
 152 }
 153
 154
 155 /***********************************************************************
 156  *              PeekMessage32 (USER.819)
 157  */
 158 BOOL16 WINAPI PeekMessage32_16( MSG32_16 *msg16, HWND16 hwnd16,
 159                                 UINT16 first, UINT16 last, UINT16 flags,
 160                                 BOOL16 wHaveParamHigh )
 161 {
 162     MSG msg;
 163     HWND hwnd = WIN_Handle32( hwnd16 );
 164
 165     if(USER16_AlertableWait)
 166         MsgWaitForMultipleObjectsEx( 0, NULL, 1, 0, MWMO_ALERTABLE );
 167     if (!PeekMessageW( &msg, hwnd, first, last, flags )) return FALSE;
 168
 169     msg16->msg.hwnd    = WIN_Handle16( msg.hwnd );
 170     msg16->msg.lParam  = msg.lParam;
 171     msg16->msg.time    = msg.time;
 172     msg16->msg.pt.x    = (INT16)msg.pt.x;
 173     msg16->msg.pt.y    = (INT16)msg.pt.y;
 174     if (wHaveParamHigh) msg16->wParamHigh = HIWORD(msg.wParam);
 175
 176     return (WINPROC_MapMsg32WTo16( msg.hwnd, msg.message, msg.wParam,
 177                                    &msg16->msg.message, &msg16->msg.wParam,
 178                                    &msg16->msg.lParam ) != -1);
 179 }
 180
 181
 182 /***********************************************************************
 183  *              PeekMessage  (USER.109)
 184  */
 185 BOOL16 WINAPI PeekMessage16( MSG16 *msg, HWND16 hwnd,
 186                              UINT16 first, UINT16 last, UINT16 flags )
 187 {
 188     return PeekMessage32_16( (MSG32_16 *)msg, hwnd, first, last, flags, FALSE );
 189 }
 190
 191
 192 /***********************************************************************
 193  *              GetMessage32  (USER.820)
 194  */
 195 BOOL16 WINAPI GetMessage32_16( MSG32_16 *msg16, HWND16 hwnd16, UINT16 first,
 196                                UINT16 last, BOOL16 wHaveParamHigh )
 197 {
 198     MSG msg;
 199     HWND hwnd = WIN_Handle32( hwnd16 );
 200
 201     do
 202     {
 203         if(USER16_AlertableWait)
 204             MsgWaitForMultipleObjectsEx( 0, NULL, INFINITE, 0, MWMO_ALERTABLE );
 205         GetMessageW( &msg, hwnd, first, last );
 206         msg16->msg.hwnd    = WIN_Handle16( msg.hwnd );
 207         msg16->msg.lParam  = msg.lParam;
 208         msg16->msg.time    = msg.time;
 209         msg16->msg.pt.x    = (INT16)msg.pt.x;
 210         msg16->msg.pt.y    = (INT16)msg.pt.y;
 211         if (wHaveParamHigh) msg16->wParamHigh = HIWORD(msg.wParam);
 212     }
 213     while (WINPROC_MapMsg32WTo16( msg.hwnd, msg.message, msg.wParam,
 214                                   &msg16->msg.message, &msg16->msg.wParam,
 215                                   &msg16->msg.lParam ) == -1);
 216
 217     TRACE( "message %04x, hwnd %04x, filter(%04x - %04x)\n",
 218            msg16->msg.message, hwnd, first, last );
 219
 220     return msg16->msg.message != WM_QUIT;
 221 }
 222
 223
 224 /***********************************************************************
 225  *              GetMessage  (USER.108)
 226  */
 227 BOOL16 WINAPI GetMessage16( MSG16 *msg, HWND16 hwnd, UINT16 first, UINT16 last )
 228 {
 229     return GetMessage32_16( (MSG32_16 *)msg, hwnd, first, last, FALSE );
 230 }
 231
 232
 233 /***********************************************************************
 234  *              TranslateMessage32 (USER.821)
 235  */
 236 BOOL16 WINAPI TranslateMessage32_16( const MSG32_16 *msg, BOOL16 wHaveParamHigh )
 237 {
 238     MSG msg32;
 239
 240     msg32.hwnd    = WIN_Handle32( msg->msg.hwnd );
 241     msg32.message = msg->msg.message;
 242     msg32.wParam  = MAKEWPARAM( msg->msg.wParam, wHaveParamHigh ? msg->wParamHigh : 0 );
 243     msg32.lParam  = msg->msg.lParam;
 244     return TranslateMessage( &msg32 );
 245 }
 246
 247
 248 /***********************************************************************
 249  *              TranslateMessage (USER.113)
 250  */
 251 BOOL16 WINAPI TranslateMessage16( const MSG16 *msg )
 252 {
 253     return TranslateMessage32_16( (MSG32_16 *)msg, FALSE );
 254 }
 255
 256
 257 /***********************************************************************
 258  *              DispatchMessage (USER.114)
 259  */
 260 LONG WINAPI DispatchMessage16( const MSG16* msg )
 261 {
 262     WND * wndPtr;
 263     WNDPROC16 winproc;
 264     LONG retval;
 265     int painting;
 266     HWND hwnd = WIN_Handle32( msg->hwnd );
 267
 268       /* Process timer messages */
 269     if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
 270     {
 271         if (msg->lParam)
 272         {
 273             /* before calling window proc, verify whether timer is still valid;
 274                there's a slim chance that the application kills the timer
 275                between GetMessage and DispatchMessage API calls */
 276             if (!TIMER_IsTimerValid(hwnd, (UINT) msg->wParam, (HWINDOWPROC) msg->lParam))
 277                 return 0; /* invalid winproc */
 278
 279             return CallWindowProc16( (WNDPROC16)msg->lParam, msg->hwnd,
 280                                      msg->message, msg->wParam, GetTickCount() );
 281         }
 282     }
 283
 284     if (!(wndPtr = WIN_GetPtr( msg->hwnd )))
 285     {
 286         if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 287         return 0;
 288     }
 289     if (wndPtr == WND_OTHER_PROCESS)
 290     {
 291         if (IsWindow( msg->hwnd ))
 292             ERR( "cannot dispatch msg to other process window %x\n", msg->hwnd );
 293         SetLastError( ERROR_INVALID_WINDOW_HANDLE );
 294         return 0;
 295     }
 296
 297     if (!(winproc = (WNDPROC16)wndPtr->winproc))
 298     {
 299         WIN_ReleasePtr( wndPtr );
 300         return 0;
 301     }
 302     painting = (msg->message == WM_PAINT);
 303     if (painting) wndPtr->flags |= WIN_NEEDS_BEGINPAINT;
 304     WIN_ReleasePtr( wndPtr );
 305
 306     SPY_EnterMessage( SPY_DISPATCHMESSAGE16, hwnd, msg->message, msg->wParam, msg->lParam );
 307     retval = CallWindowProc16( winproc, msg->hwnd, msg->message, msg->wParam, msg->lParam );
 308     SPY_ExitMessage( SPY_RESULT_OK16, hwnd, msg->message, retval, msg->wParam, msg->lParam );
 309
 310     if (painting && (wndPtr = WIN_GetPtr( hwnd )) && (wndPtr != WND_OTHER_PROCESS))
 311     {
 312         BOOL validate = ((wndPtr->flags & WIN_NEEDS_BEGINPAINT) && wndPtr->hrgnUpdate);
 313         wndPtr->flags &= ~WIN_NEEDS_BEGINPAINT;
 314         WIN_ReleasePtr( wndPtr );
 315         if (validate)
 316         {
 317             ERR( "BeginPaint not called on WM_PAINT for hwnd %04x!\n", msg->hwnd );
 318             /* Validate the update region to avoid infinite WM_PAINT loop */
 319             RedrawWindow( hwnd, NULL, 0,
 320                           RDW_NOFRAME | RDW_VALIDATE | RDW_NOCHILDREN | RDW_NOINTERNALPAINT );
 321         }
 322     }
 323     return retval;
 324 }
 325
 326
 327 /***********************************************************************
 328  *              DispatchMessage32 (USER.822)
 329  */
 330 LONG WINAPI DispatchMessage32_16( const MSG32_16 *msg16, BOOL16 wHaveParamHigh )
 331 {
 332     if (wHaveParamHigh == FALSE)
 333         return DispatchMessage16( &msg16->msg );
 334     else
 335     {
 336         MSG msg;
 337
 338         msg.hwnd    = WIN_Handle32( msg16->msg.hwnd );
 339         msg.message = msg16->msg.message;
 340         msg.wParam  = MAKEWPARAM( msg16->msg.wParam, msg16->wParamHigh );
 341         msg.lParam  = msg16->msg.lParam;
 342         msg.time    = msg16->msg.time;
 343         msg.pt.x    = msg16->msg.pt.x;
 344         msg.pt.y    = msg16->msg.pt.y;
 345         return DispatchMessageA( &msg );
 346     }
 347 }
 348
 349
 350 /***********************************************************************
 351  *              MsgWaitForMultipleObjects  (USER.640)
 352  */
 353 DWORD WINAPI MsgWaitForMultipleObjects16( DWORD count, CONST HANDLE *handles,
 354                                           BOOL wait_all, DWORD timeout, DWORD mask )
 355 {
 356     return MsgWaitForMultipleObjectsEx( count, handles, timeout, mask,
 357                                         wait_all ? MWMO_WAITALL : 0 );
 358 }
 359
 360
 361 /**********************************************************************
 362  *              SetDoubleClickTime (USER.20)
 363  */
 364 void WINAPI SetDoubleClickTime16( UINT16 interval )
 365 {
 366     SetDoubleClickTime( interval );
 367 }
 368
 369
 370 /**********************************************************************
 371  *              GetDoubleClickTime (USER.21)
 372  */
 373 UINT16 WINAPI GetDoubleClickTime16(void)
 374 {
 375     return GetDoubleClickTime();
 376 }
 377
 378
 379 /***********************************************************************
 380  *              PostQuitMessage (USER.6)
 381  */
 382 void WINAPI PostQuitMessage16( INT16 exitCode )
 383 {
 384     PostQuitMessage( exitCode );
 385 }
 386
 387
 388 /***********************************************************************
 389  *              SetMessageQueue (USER.266)
 390  */
 391 BOOL16 WINAPI SetMessageQueue16( INT16 size )
 392 {
 393     return SetMessageQueue( size );
 394 }
 395
 396
 397 /***********************************************************************
 398  *              GetQueueStatus (USER.334)
 399  */
 400 DWORD WINAPI GetQueueStatus16( UINT16 flags )
 401 {
 402     return GetQueueStatus( flags );
 403 }
 404
 405
 406 /***********************************************************************
 407  *              GetInputState (USER.335)
 408  */
 409 BOOL16 WINAPI GetInputState16(void)
 410 {
 411     return GetInputState();
 412 }
 413
 414
 415 /**********************************************************************
 416  *           TranslateAccelerator      (USER.178)
 417  */
 418 INT16 WINAPI TranslateAccelerator16( HWND16 hwnd, HACCEL16 hAccel, LPMSG16 msg )
 419 {
 420     MSG msg32;
 421
 422     if (!msg) return 0;
 423     msg32.message = msg->message;
 424     /* msg32.hwnd not used */
 425     msg32.wParam  = msg->wParam;
 426     msg32.lParam  = msg->lParam;
 427     return TranslateAccelerator( WIN_Handle32(hwnd), hAccel, &msg32 );
 428 }
 429
 430
 431 /**********************************************************************
 432  *              TranslateMDISysAccel (USER.451)
 433  */
 434 BOOL16 WINAPI TranslateMDISysAccel16( HWND16 hwndClient, LPMSG16 msg )
 435 {
 436     if (msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
 437     {
 438         MSG msg32;
 439         msg32.hwnd    = WIN_Handle32(msg->hwnd);
 440         msg32.message = msg->message;
 441         msg32.wParam  = msg->wParam;
 442         msg32.lParam  = msg->lParam;
 443         /* MDICLIENTINFO is still the same for win32 and win16 ... */
 444         return TranslateMDISysAccel( WIN_Handle32(hwndClient), &msg32 );
 445     }
 446     return 0;
 447 }