git.oblomov.eu Git - wine/blob - dlls/ddraw/dsurface/user.c

   1 /*      User-based primary surface driver
   2  *
   3  * Copyright 2000-2001 TransGaming Technologies Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include "config.h"
  21
  22 #include <assert.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "winerror.h"
  27 #include "wine/debug.h"
  28 #include "ddraw_private.h"
  29 #include "dsurface/main.h"
  30 #include "dsurface/dib.h"
  31 #include "dsurface/user.h"
  32 #include "dsurface/wndproc.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  35
  36 /* if you use OWN_WINDOW, don't use SYNC_UPDATE, or you may get trouble */
  37 /* #define SYNC_UPDATE */
  38 #define OWN_WINDOW
  39
  40 #ifdef OWN_WINDOW
  41 static void User_create_own_window(IDirectDrawSurfaceImpl* This);
  42 static void User_destroy_own_window(IDirectDrawSurfaceImpl* This);
  43 #endif
  44 #ifndef SYNC_UPDATE
  45 static DWORD CALLBACK User_update_thread(LPVOID);
  46 #endif
  47 static void User_copy_to_screen(IDirectDrawSurfaceImpl* This, LPCRECT rc);
  48 static void User_copy_from_screen(IDirectDrawSurfaceImpl* This, LPCRECT rc);
  49
  50 static HWND get_display_window(IDirectDrawSurfaceImpl* This, LPPOINT pt);
  51
  52 static ICOM_VTABLE(IDirectDrawSurface7) User_IDirectDrawSurface7_VTable;
  53
  54 HRESULT
  55 User_DirectDrawSurface_Construct(IDirectDrawSurfaceImpl* This,
  56                                  IDirectDrawImpl* pDD,
  57                                  const DDSURFACEDESC2* pDDSD)
  58 {
  59     USER_PRIV_VAR(priv, This);
  60     HRESULT hr;
  61
  62     TRACE("(%p,%p,%p)\n",This,pDD,pDDSD);
  63     hr = DIB_DirectDrawSurface_Construct(This, pDD, pDDSD);
  64     if (FAILED(hr)) return hr;
  65
  66     ICOM_INIT_INTERFACE(This, IDirectDrawSurface7,
  67                         User_IDirectDrawSurface7_VTable);
  68
  69     This->final_release = User_DirectDrawSurface_final_release;
  70     This->duplicate_surface = User_DirectDrawSurface_duplicate_surface;
  71
  72     This->lock_update   = User_DirectDrawSurface_lock_update;
  73     This->unlock_update = User_DirectDrawSurface_unlock_update;
  74
  75     This->flip_data   = User_DirectDrawSurface_flip_data;
  76     This->flip_update = User_DirectDrawSurface_flip_update;
  77
  78     This->get_dc     = User_DirectDrawSurface_get_dc;
  79     This->release_dc = User_DirectDrawSurface_release_dc;
  80
  81     This->set_palette    = User_DirectDrawSurface_set_palette;
  82     This->update_palette = User_DirectDrawSurface_update_palette;
  83
  84     This->get_gamma_ramp = User_DirectDrawSurface_get_gamma_ramp;
  85     This->set_gamma_ramp = User_DirectDrawSurface_set_gamma_ramp;
  86
  87     This->get_display_window = User_DirectDrawSurface_get_display_window;
  88
  89     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
  90     {
  91 #ifdef OWN_WINDOW
  92         DirectDrawSurface_RegisterClass();
  93 #endif
  94 #ifndef SYNC_UPDATE
  95         priv->user.update_event = CreateEventA(NULL, FALSE, FALSE, NULL);
  96         priv->user.update_thread = CreateThread(NULL, 0, User_update_thread, This, 0, NULL);
  97 #ifdef OWN_WINDOW
  98         if (This->ddraw_owner->cooperative_level & DDSCL_FULLSCREEN) {
  99             /* wait for window creation (or update thread destruction) */
 100             while (WaitForMultipleObjects(1, &priv->user.update_thread, FALSE, 10) == WAIT_TIMEOUT)
 101                 if (This->more.lpDDRAWReserved) break;
 102             if (!This->more.lpDDRAWReserved) {
 103                 ERR("window creation failed\n");
 104             }
 105         }
 106 #endif
 107 #else
 108 #ifdef OWN_WINDOW
 109         User_create_own_window(This);
 110 #endif
 111 #endif
 112         if (!This->more.lpDDRAWReserved)
 113             This->more.lpDDRAWReserved = (LPVOID)pDD->window;
 114     }
 115
 116     return DIB_DirectDrawSurface_alloc_dc(This, &priv->user.cached_dc);
 117 }
 118
 119 HRESULT
 120 User_DirectDrawSurface_Create(IDirectDrawImpl *pDD,
 121                               const DDSURFACEDESC2 *pDDSD,
 122                               LPDIRECTDRAWSURFACE7 *ppSurf,
 123                               IUnknown *pUnkOuter)
 124 {
 125     IDirectDrawSurfaceImpl* This;
 126     HRESULT hr;
 127     assert(pUnkOuter == NULL);
 128
 129     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 130                      sizeof(*This) + sizeof(User_DirectDrawSurfaceImpl));
 131     if (This == NULL) return E_OUTOFMEMORY;
 132
 133     This->private = (User_DirectDrawSurfaceImpl*)(This+1);
 134
 135     hr = User_DirectDrawSurface_Construct(This, pDD, pDDSD);
 136     if (FAILED(hr))
 137         HeapFree(GetProcessHeap(), 0, This);
 138     else
 139         *ppSurf = ICOM_INTERFACE(This, IDirectDrawSurface7);
 140
 141     return hr;
 142 }
 143
 144 void User_DirectDrawSurface_final_release(IDirectDrawSurfaceImpl* This)
 145 {
 146     USER_PRIV_VAR(priv, This);
 147
 148     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 149     {
 150 #ifndef SYNC_UPDATE
 151         HANDLE event = priv->user.update_event;
 152         priv->user.update_event = 0;
 153         SetEvent(event);
 154         TRACE("waiting for update thread to terminate...\n");
 155 #ifdef OWN_WINDOW
 156         /* dispatch any waiting sendmessages */
 157         {
 158             MSG msg;
 159             PeekMessageA(&msg, 0, 0, 0, PM_NOREMOVE);
 160         }
 161         /* to avoid deadlocks, allow SendMessages from update thread
 162          * through while we wait for it */
 163         while (MsgWaitForMultipleObjects(1, &priv->user.update_thread, FALSE,
 164                                          INFINITE, QS_SENDMESSAGE) == WAIT_OBJECT_0+1)
 165         {
 166             MSG msg;
 167             PeekMessageA(&msg, 0, 0, 0, PM_NOREMOVE);
 168         }
 169 #else
 170         WaitForSingleObject(priv->user.update_thread,INFINITE);
 171 #endif
 172         TRACE("update thread terminated\n");
 173         CloseHandle(priv->user.update_thread);
 174 #else
 175 #ifdef OWN_WINDOW
 176         User_destroy_own_window(This);
 177 #endif
 178 #endif
 179         This->more.lpDDRAWReserved = 0;
 180 #ifdef OWN_WINDOW
 181         DirectDrawSurface_UnregisterClass();
 182 #endif
 183     }
 184     DIB_DirectDrawSurface_free_dc(This, priv->user.cached_dc);
 185     DIB_DirectDrawSurface_final_release(This);
 186 }
 187
 188 void User_DirectDrawSurface_lock_update(IDirectDrawSurfaceImpl* This,
 189                                         LPCRECT pRect, DWORD dwFlags)
 190 {
 191     if (!(dwFlags & DDLOCK_WRITEONLY))
 192         User_copy_from_screen(This, pRect);
 193
 194     if (pRect) {
 195         This->lastlockrect = *pRect;
 196     } else {
 197         This->lastlockrect.left = This->lastlockrect.right = 0;
 198     }
 199 }
 200
 201 void User_DirectDrawSurface_unlock_update(IDirectDrawSurfaceImpl* This,
 202                                           LPCRECT pRect)
 203 {
 204 #ifdef SYNC_UPDATE
 205     User_copy_to_screen(This, pRect);
 206 #else
 207     USER_PRIV_VAR(priv, This);
 208     SetEvent(priv->user.update_event);
 209 #endif
 210 }
 211
 212 void User_DirectDrawSurface_set_palette(IDirectDrawSurfaceImpl* This,
 213                                         IDirectDrawPaletteImpl* pal)
 214 {
 215     USER_PRIV_VAR(priv, This);
 216
 217     if (!pal) {
 218         FIXME("selecting null palette\n");
 219         /* I don't think selecting GDI object 0 will work, we should select
 220          * the original palette, returned by the first SelectPalette */
 221         SelectPalette(priv->user.cached_dc, 0, FALSE);
 222         return;
 223     }
 224
 225     SelectPalette(priv->user.cached_dc, pal->hpal, FALSE);
 226
 227     DIB_DirectDrawSurface_set_palette(This, pal);
 228 }
 229
 230 void User_DirectDrawSurface_update_palette(IDirectDrawSurfaceImpl* This,
 231                                            IDirectDrawPaletteImpl* pal,
 232                                            DWORD dwStart, DWORD dwCount,
 233                                            LPPALETTEENTRY palent)
 234 {
 235     USER_PRIV_VAR(priv, This);
 236
 237     DIB_DirectDrawSurface_update_palette(This, pal, dwStart, dwCount, palent);
 238     /* FIXME: realize palette on display window */
 239
 240 #ifndef SYNC_UPDATE
 241     /* with async updates, it's probably cool to force an update */
 242     SetEvent(priv->user.update_event);
 243 #endif
 244 }
 245
 246 HRESULT User_DirectDrawSurface_duplicate_surface(IDirectDrawSurfaceImpl* This,
 247                                                  LPDIRECTDRAWSURFACE7* ppDup)
 248 {
 249     return User_DirectDrawSurface_Create(This->ddraw_owner,
 250                                          &This->surface_desc, ppDup, NULL);
 251 }
 252
 253 BOOL User_DirectDrawSurface_flip_data(IDirectDrawSurfaceImpl* front,
 254                                       IDirectDrawSurfaceImpl* back,
 255                                       DWORD dwFlags)
 256 {
 257     USER_PRIV_VAR(front_priv, front);
 258     USER_PRIV_VAR(back_priv, back);
 259
 260     {
 261         HDC tmp;
 262         tmp = front_priv->user.cached_dc;
 263         front_priv->user.cached_dc = back_priv->user.cached_dc;
 264         back_priv->user.cached_dc = tmp;
 265     }
 266
 267     return DIB_DirectDrawSurface_flip_data(front, back, dwFlags);
 268 }
 269
 270 void User_DirectDrawSurface_flip_update(IDirectDrawSurfaceImpl* This, DWORD dwFlags)
 271 {
 272 #ifdef SYNC_UPDATE
 273     This->lastlockrect.left = This->lastlockrect.right = 0;
 274     assert(This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE);
 275     User_copy_to_screen(This,NULL);
 276 #else
 277     USER_PRIV_VAR(priv, This);
 278     This->lastlockrect.left = This->lastlockrect.right = 0;
 279     assert(This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE);
 280     SetEvent(priv->user.update_event);
 281 #endif
 282 }
 283
 284 HRESULT User_DirectDrawSurface_get_dc(IDirectDrawSurfaceImpl* This, HDC* phDC)
 285 {
 286     USER_PRIV_VAR(priv, This);
 287
 288     *phDC = priv->user.cached_dc;
 289     return S_OK;
 290 }
 291
 292 HRESULT User_DirectDrawSurface_release_dc(IDirectDrawSurfaceImpl* This,
 293                                           HDC hDC)
 294 {
 295     return S_OK;
 296 }
 297
 298 HRESULT User_DirectDrawSurface_get_gamma_ramp(IDirectDrawSurfaceImpl* This,
 299                                               DWORD dwFlags,
 300                                               LPDDGAMMARAMP lpGammaRamp)
 301 {
 302     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 303     {
 304         POINT offset;
 305         HWND hDisplayWnd;
 306         HDC hDisplayDC;
 307         HRESULT hr;
 308         hDisplayWnd = get_display_window(This, &offset);
 309         hDisplayDC = GetDCEx(hDisplayWnd, 0, DCX_CLIPSIBLINGS|DCX_CACHE);
 310         hr = GetDeviceGammaRamp(hDisplayDC, lpGammaRamp) ? DD_OK : DDERR_UNSUPPORTED;
 311         ReleaseDC(hDisplayWnd, hDisplayDC);
 312         return hr;
 313     }
 314     return Main_DirectDrawSurface_get_gamma_ramp(This, dwFlags, lpGammaRamp);
 315 }
 316
 317 HRESULT User_DirectDrawSurface_set_gamma_ramp(IDirectDrawSurfaceImpl* This,
 318                                               DWORD dwFlags,
 319                                               LPDDGAMMARAMP lpGammaRamp)
 320 {
 321     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 322     {
 323         POINT offset;
 324         HWND hDisplayWnd;
 325         HDC hDisplayDC;
 326         HRESULT hr;
 327         hDisplayWnd = get_display_window(This, &offset);
 328         hDisplayDC = GetDCEx(hDisplayWnd, 0, DCX_CLIPSIBLINGS|DCX_CACHE);
 329         hr = SetDeviceGammaRamp(hDisplayDC, lpGammaRamp) ? DD_OK : DDERR_UNSUPPORTED;
 330         ReleaseDC(hDisplayWnd, hDisplayDC);
 331         return hr;
 332     }
 333     return Main_DirectDrawSurface_set_gamma_ramp(This, dwFlags, lpGammaRamp);
 334 }
 335
 336 /* Returns the window that hosts the display.
 337  * *pt is set to the upper left position of the window relative to the
 338  * upper left corner of the surface. */
 339 static HWND get_display_window(IDirectDrawSurfaceImpl* This, LPPOINT pt)
 340 {
 341     memset(pt, 0, sizeof(*pt));
 342
 343     if (This->ddraw_owner->cooperative_level & DDSCL_FULLSCREEN)
 344     {
 345 #ifdef OWN_WINDOW
 346         USER_PRIV_VAR(priv, This);
 347 #if 1
 348         SetWindowPos(priv->user.window, HWND_TOP, 0, 0, 0, 0,
 349                      SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOCOPYBITS|SWP_NOMOVE|
 350                      SWP_NOREDRAW|SWP_NOSENDCHANGING|SWP_NOSIZE);
 351 #endif
 352         return priv->user.window;
 353 #else
 354         return This->ddraw_owner->window;
 355 #endif
 356     }
 357     else
 358     {
 359         if (This->clipper != NULL)
 360         {
 361             /* looks silly, but since we don't have the clipper locked */
 362             HWND hWnd = This->clipper->hWnd;
 363
 364             if (hWnd != 0)
 365             {
 366                 ClientToScreen(hWnd, pt);
 367                 return hWnd;
 368             }
 369             else
 370             {
 371                 static BOOL warn = 0;
 372                 if (!warn++) FIXME("clipper clip lists not supported\n");
 373
 374                 return GetDesktopWindow();
 375             }
 376         }
 377         else
 378         {
 379             static BOOL warn = 0;
 380             if (!warn++) WARN("hosting on root\n");
 381
 382             return GetDesktopWindow();
 383         }
 384     }
 385 }
 386
 387 HWND User_DirectDrawSurface_get_display_window(IDirectDrawSurfaceImpl* This)
 388 {
 389     POINT offset;
 390     return get_display_window(This, &offset);
 391 }
 392
 393 #ifdef OWN_WINDOW
 394 static void User_create_own_window(IDirectDrawSurfaceImpl* This)
 395 {
 396     USER_PRIV_VAR(priv, This);
 397
 398     if (This->ddraw_owner->cooperative_level & DDSCL_FULLSCREEN)
 399     {
 400         priv->user.window = CreateWindowExA(WS_EX_TOPMOST |
 401                                             WS_EX_LAYERED |
 402                                             WS_EX_TRANSPARENT,
 403                                             "WINE_DDRAW", "DirectDraw",
 404                                             WS_POPUP,
 405                                             0, 0,
 406                                             This->surface_desc.dwWidth,
 407                                             This->surface_desc.dwHeight,
 408                                             GetDesktopWindow(),
 409                                             0, 0, This);
 410         This->more.lpDDRAWReserved = (LPVOID)priv->user.window;
 411         SetWindowPos(priv->user.window, HWND_TOP, 0, 0, 0, 0,
 412                      SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOCOPYBITS|SWP_NOMOVE|
 413                      SWP_NOREDRAW|SWP_NOSENDCHANGING|SWP_NOSIZE|SWP_SHOWWINDOW);
 414         UpdateWindow(priv->user.window);
 415     }
 416 }
 417
 418 static void User_destroy_own_window(IDirectDrawSurfaceImpl* This)
 419 {
 420     USER_PRIV_VAR(priv, This);
 421
 422     if (priv->user.window)
 423     {
 424         SetWindowPos(priv->user.window, 0, 0, 0, 0, 0,
 425                      SWP_DEFERERASE|SWP_NOACTIVATE|SWP_NOCOPYBITS|SWP_NOMOVE|SWP_NOZORDER|
 426                      SWP_NOREDRAW|SWP_NOSENDCHANGING|SWP_NOSIZE|SWP_HIDEWINDOW);
 427         This->more.lpDDRAWReserved = NULL;
 428         DestroyWindow(priv->user.window);
 429         priv->user.window = 0;
 430     }
 431 }
 432 #endif
 433
 434 #ifndef SYNC_UPDATE
 435 static DWORD CALLBACK User_update_thread(LPVOID arg)
 436 {
 437     IDirectDrawSurfaceImpl *This = (IDirectDrawSurfaceImpl *)arg;
 438     USER_PRIV_VAR(priv, This);
 439     volatile DWORD *pActive = (volatile DWORD *)&priv->user.update_event;
 440     HANDLE event = *pActive;
 441
 442 #ifdef OWN_WINDOW
 443     User_create_own_window(This);
 444 #endif
 445
 446     /* the point of this is that many games lock the primary surface
 447      * multiple times per frame; this thread will then simply copy as
 448      * often as it can without keeping the main thread waiting for
 449      * each unlock, thus keeping the frame rate high */
 450     do {
 451 #ifdef OWN_WINDOW
 452         DWORD ret = MsgWaitForMultipleObjects(1, &event, FALSE, INFINITE, QS_ALLINPUT);
 453         MSG msg;
 454
 455         while (PeekMessageA(&msg, 0, 0, 0, PM_REMOVE))
 456         {
 457             switch (msg.message) {
 458             case WM_PAINT:
 459                 DispatchMessageA(&msg);
 460                 break;
 461             default:
 462                 /* since we risk getting keyboard messages posted to us,
 463                  * repost posted messages to cooperative window */
 464                 PostMessageA(This->ddraw_owner->window, msg.message, msg.wParam, msg.lParam);
 465             }
 466         }
 467 #else
 468         DWORD ret = WaitForSingleObject(event, INFINITE);
 469 #endif
 470         if (ret == WAIT_OBJECT_0)
 471         {
 472             if (*pActive)
 473                 User_copy_to_screen(This, NULL);
 474             else
 475                 break;
 476         }
 477         else if (ret != WAIT_OBJECT_0+1) break;
 478     } while (TRUE);
 479
 480 #ifdef OWN_WINDOW
 481     User_destroy_own_window(This);
 482 #endif
 483
 484     return 0;
 485 }
 486 #endif
 487
 488 static void User_copy_to_screen(IDirectDrawSurfaceImpl* This, LPCRECT rc)
 489 {
 490     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 491     {
 492         POINT offset;
 493         HWND hDisplayWnd;
 494         HDC hDisplayDC;
 495         HDC hSurfaceDC;
 496         RECT drawrect;
 497
 498         if (FAILED(This->get_dc(This, &hSurfaceDC)))
 499             return;
 500
 501         hDisplayWnd = get_display_window(This, &offset);
 502         hDisplayDC = GetDCEx(hDisplayWnd, 0, DCX_CLIPSIBLINGS|DCX_CACHE);
 503 #if 0
 504         /* FIXME: this doesn't work... if users really want to run
 505          * X in 8bpp, then we need to call directly into display.drv
 506          * (or Wine's equivalent), and force a private colormap
 507          * without default entries. */
 508         if (This->palette) {
 509             SelectPalette(hDisplayDC, This->palette->hpal, FALSE);
 510             RealizePalette(hDisplayDC); /* sends messages => deadlocks */
 511         }
 512 #endif
 513         drawrect.left   = 0;
 514         drawrect.right  = This->surface_desc.dwWidth;
 515         drawrect.top    = 0;
 516         drawrect.bottom = This->surface_desc.dwHeight;
 517
 518         if (This->clipper) {
 519             RECT xrc;
 520             HWND hwnd = This->clipper->hWnd;
 521             if (hwnd && GetWindowRect(hwnd,&xrc)) {
 522                 /* Do not forget to honor the offset within the clip window. */
 523                 /* translate the surface to 0.0 of the clip window */
 524                 OffsetRect(&drawrect,offset.x,offset.y);
 525                 IntersectRect(&drawrect,&drawrect,&xrc);
 526                 /* translate it back to its original position */
 527                 OffsetRect(&drawrect,-offset.x,-offset.y);
 528             }
 529         }
 530         if (rc)
 531             IntersectRect(&drawrect,&drawrect,rc);
 532         else {
 533             /* Only use this if the caller did not pass a rectangle, since
 534              * due to double locking this could be the wrong one ... */
 535             if (This->lastlockrect.left != This->lastlockrect.right)
 536                 IntersectRect(&drawrect,&drawrect,&This->lastlockrect);
 537         }
 538         BitBlt(hDisplayDC,
 539                 drawrect.left+offset.x, drawrect.top+offset.y,
 540                 drawrect.right-drawrect.left, drawrect.bottom-drawrect.top,
 541                 hSurfaceDC,
 542                 drawrect.left, drawrect.top,
 543                 SRCCOPY
 544         );
 545         ReleaseDC(hDisplayWnd, hDisplayDC);
 546     }
 547 }
 548
 549 static void User_copy_from_screen(IDirectDrawSurfaceImpl* This, LPCRECT rc)
 550 {
 551     if (This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
 552     {
 553         POINT offset;
 554         HWND hDisplayWnd = get_display_window(This, &offset);
 555         HDC hDisplayDC = GetDC(hDisplayWnd);
 556         RECT drawrect;
 557
 558         drawrect.left   = 0;
 559         drawrect.right  = This->surface_desc.dwWidth;
 560         drawrect.top    = 0;
 561         drawrect.bottom = This->surface_desc.dwHeight;
 562         if (rc)
 563             IntersectRect(&drawrect,&drawrect,rc);
 564
 565         BitBlt(This->hDC,
 566             drawrect.left, drawrect.top,
 567             drawrect.right-drawrect.left, drawrect.bottom-drawrect.top,
 568             hDisplayDC,
 569             drawrect.left+offset.x, drawrect.top+offset.y,
 570             SRCCOPY
 571         );
 572         ReleaseDC(hDisplayWnd, hDisplayDC);
 573     }
 574 }
 575
 576 static ICOM_VTABLE(IDirectDrawSurface7) User_IDirectDrawSurface7_VTable =
 577 {
 578     Main_DirectDrawSurface_QueryInterface,
 579     Main_DirectDrawSurface_AddRef,
 580     Main_DirectDrawSurface_Release,
 581     Main_DirectDrawSurface_AddAttachedSurface,
 582     Main_DirectDrawSurface_AddOverlayDirtyRect,
 583     DIB_DirectDrawSurface_Blt,
 584     Main_DirectDrawSurface_BltBatch,
 585     DIB_DirectDrawSurface_BltFast,
 586     Main_DirectDrawSurface_DeleteAttachedSurface,
 587     Main_DirectDrawSurface_EnumAttachedSurfaces,
 588     Main_DirectDrawSurface_EnumOverlayZOrders,
 589     Main_DirectDrawSurface_Flip,
 590     Main_DirectDrawSurface_GetAttachedSurface,
 591     Main_DirectDrawSurface_GetBltStatus,
 592     Main_DirectDrawSurface_GetCaps,
 593     Main_DirectDrawSurface_GetClipper,
 594     Main_DirectDrawSurface_GetColorKey,
 595     Main_DirectDrawSurface_GetDC,
 596     Main_DirectDrawSurface_GetFlipStatus,
 597     Main_DirectDrawSurface_GetOverlayPosition,
 598     Main_DirectDrawSurface_GetPalette,
 599     Main_DirectDrawSurface_GetPixelFormat,
 600     Main_DirectDrawSurface_GetSurfaceDesc,
 601     Main_DirectDrawSurface_Initialize,
 602     Main_DirectDrawSurface_IsLost,
 603     Main_DirectDrawSurface_Lock,
 604     Main_DirectDrawSurface_ReleaseDC,
 605     DIB_DirectDrawSurface_Restore,
 606     Main_DirectDrawSurface_SetClipper,
 607     Main_DirectDrawSurface_SetColorKey,
 608     Main_DirectDrawSurface_SetOverlayPosition,
 609     Main_DirectDrawSurface_SetPalette,
 610     Main_DirectDrawSurface_Unlock,
 611     Main_DirectDrawSurface_UpdateOverlay,
 612     Main_DirectDrawSurface_UpdateOverlayDisplay,
 613     Main_DirectDrawSurface_UpdateOverlayZOrder,
 614     Main_DirectDrawSurface_GetDDInterface,
 615     Main_DirectDrawSurface_PageLock,
 616     Main_DirectDrawSurface_PageUnlock,
 617     DIB_DirectDrawSurface_SetSurfaceDesc,
 618     Main_DirectDrawSurface_SetPrivateData,
 619     Main_DirectDrawSurface_GetPrivateData,
 620     Main_DirectDrawSurface_FreePrivateData,
 621     Main_DirectDrawSurface_GetUniquenessValue,
 622     Main_DirectDrawSurface_ChangeUniquenessValue,
 623     Main_DirectDrawSurface_SetPriority,
 624     Main_DirectDrawSurface_GetPriority,
 625     Main_DirectDrawSurface_SetLOD,
 626     Main_DirectDrawSurface_GetLOD
 627 };