windows/painting.c

   1 /*
   2  * Window painting functions
   3  *
   4  * Copyright 1993, 1994, 1995 Alexandre Julliard
   5  *                       1999 Alex Korobka
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <string.h>
  23 #include "windef.h"
  24 #include "wingdi.h"
  25 #include "wine/winuser16.h"
  26 #include "wine/unicode.h"
  27 #include "wine/server.h"
  28 #include "gdi.h"
  29 #include "user.h"
  30 #include "win.h"
  31 #include "queue.h"
  32 #include "dce.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(win);
  36 WINE_DECLARE_DEBUG_CHANNEL(nonclient);
  37
  38 /* client rect in window coordinates */
  39
  40 #define GETCLIENTRECTW( wnd, r )        (r).left = (wnd)->rectClient.left - (wnd)->rectWindow.left; \
  41                                         (r).top = (wnd)->rectClient.top - (wnd)->rectWindow.top; \
  42                                         (r).right = (wnd)->rectClient.right - (wnd)->rectWindow.left; \
  43                                         (r).bottom = (wnd)->rectClient.bottom - (wnd)->rectWindow.top
  44
  45   /* PAINT_RedrawWindow() control flags */
  46 #define RDW_EX_DELAY_NCPAINT    0x0020
  47
  48   /* WIN_UpdateNCRgn() flags */
  49 #define UNC_CHECK               0x0001
  50 #define UNC_ENTIRE              0x0002
  51 #define UNC_REGION              0x0004
  52 #define UNC_UPDATE              0x0008
  53 #define UNC_DELAY_NCPAINT       0x0010
  54 #define UNC_IN_BEGINPAINT       0x0020
  55
  56   /* Last COLOR id */
  57 #define COLOR_MAX   COLOR_GRADIENTINACTIVECAPTION
  58
  59
  60 /* ### start build ### */
  61 extern WORD CALLBACK PAINTING_CallTo16_word_wlwww(DRAWSTATEPROC16,WORD,LONG,WORD,WORD,WORD);
  62 /* ### stop build ### */
  63
  64 struct draw_state_info
  65 {
  66     DRAWSTATEPROC16 proc;
  67     LPARAM          param;
  68 };
  69
  70 /* callback for 16-bit DrawState functions */
  71 static BOOL CALLBACK draw_state_callback( HDC hdc, LPARAM lparam, WPARAM wparam, int cx, int cy )
  72 {
  73     const struct draw_state_info *info = (struct draw_state_info *)lparam;
  74     return PAINTING_CallTo16_word_wlwww( info->proc, hdc, info->param, wparam, cx, cy );
  75 }
  76
  77
  78 /***********************************************************************
  79  *           add_paint_count
  80  *
  81  * Add an increment (normally 1 or -1) to the current paint count of a window.
  82  */
  83 static void add_paint_count( HWND hwnd, int incr )
  84 {
  85     SERVER_START_REQ( inc_window_paint_count )
  86     {
  87         req->handle = hwnd;
  88         req->incr   = incr;
  89         wine_server_call( req );
  90     }
  91     SERVER_END_REQ;
  92 }
  93
  94
  95 /***********************************************************************
  96  *           crop_rgn
  97  *
  98  * hSrc:        Region to crop.
  99  * lpRect:      Clipping rectangle.
 100  *
 101  * hDst: Region to hold the result (a new region is created if it's 0).
 102  *       Allowed to be the same region as hSrc in which case everything
 103  *       will be done in place, with no memory reallocations.
 104  *
 105  * Returns: hDst if success, 0 otherwise.
 106  */
 107 static HRGN crop_rgn( HRGN hDst, HRGN hSrc, const RECT *rect )
 108 {
 109     HRGN h = CreateRectRgnIndirect( rect );
 110     if (hDst == 0) hDst = h;
 111     CombineRgn( hDst, hSrc, h, RGN_AND );
 112     if (hDst != h) DeleteObject( h );
 113     return hDst;
 114 }
 115
 116
 117 /***********************************************************************
 118  *           WIN_HaveToDelayNCPAINT
 119  *
 120  * Currently, in the Wine painting mechanism, the WM_NCPAINT message
 121  * is generated as soon as a region intersecting the non-client area
 122  * of a window is invalidated.
 123  *
 124  * This technique will work fine for all windows whose parents
 125  * have the WS_CLIPCHILDREN style. When the parents have that style,
 126  * they are not going to override the contents of their children.
 127  * However, when the parent doesn't have that style, Windows relies
 128  * on a "painter's algorithm" to display the contents of the windows.
 129  * That is, windows are painted from back to front. This includes the
 130  * non-client area.
 131  *
 132  * This method looks at the current state of a window to determine
 133  * if the sending of the WM_NCPAINT message should be delayed until
 134  * the BeginPaint call.
 135  *
 136  * PARAMS:
 137  *   wndPtr   - A Locked window pointer to the window we're
 138  *              examining.
 139  *   uncFlags - This is the flag passed to the WIN_UpdateNCRgn
 140  *              function. This is a shortcut for the cases when
 141  *              we already know when to avoid scanning all the
 142  *              parents of a window. If you already know that this
 143  *              window's NCPAINT should be delayed, set the
 144  *              UNC_DELAY_NCPAINT flag for this parameter.
 145  *
 146  *              This shortcut behavior is implemented in the
 147  *              RDW_Paint() method.
 148  *
 149  */
 150 static BOOL WIN_HaveToDelayNCPAINT( HWND hwnd, UINT uncFlags)
 151 {
 152   /*
 153    * Test the shortcut first. (duh)
 154    */
 155   if (uncFlags & UNC_DELAY_NCPAINT)
 156     return TRUE;
 157
 158   /*
 159    * The UNC_IN_BEGINPAINT flag is set in the BeginPaint
 160    * method only. This is another shortcut to avoid going
 161    * up the parent's chain of the window to finally
 162    * figure-out that none of them has an invalid region.
 163    */
 164   if (uncFlags & UNC_IN_BEGINPAINT)
 165     return FALSE;
 166
 167   /*
 168    * Scan all the parents of this window to find a window
 169    * that doesn't have the WS_CLIPCHILDREN style and that
 170    * has an invalid region.
 171    */
 172   while ((hwnd = GetAncestor( hwnd, GA_PARENT )))
 173   {
 174       WND* parentWnd = WIN_FindWndPtr( hwnd );
 175       if (parentWnd && !(parentWnd->dwStyle & WS_CLIPCHILDREN) && parentWnd->hrgnUpdate)
 176       {
 177           WIN_ReleaseWndPtr( parentWnd );
 178           return TRUE;
 179       }
 180       WIN_ReleaseWndPtr( parentWnd );
 181   }
 182   return FALSE;
 183 }
 184
 185 /***********************************************************************
 186  *           WIN_UpdateNCRgn
 187  *
 188  *  Things to do:
 189  *      Send WM_NCPAINT if required (when nonclient is invalid or UNC_ENTIRE flag is set)
 190  *      Crop hrgnUpdate to a client rect, especially if it 1.
 191  *      If UNC_REGION is set return update region for the client rect.
 192  *
 193  *  NOTE: UNC_REGION is mainly for the RDW_Paint() chunk that sends WM_ERASEBKGND message.
 194  *        The trick is that when the returned region handle may be different from hRgn.
 195  *        In this case the old hRgn must be considered gone. BUT, if the returned value
 196  *        is 1 then the hRgn is preserved and RDW_Paint() will have to get
 197  *        a DC without extra clipping region.
 198  */
 199 static HRGN WIN_UpdateNCRgn(WND* wnd, HRGN hRgn, UINT uncFlags )
 200 {
 201     RECT  r;
 202     HRGN  hClip = 0;
 203     HRGN  hrgnRet = 0;
 204
 205     TRACE_(nonclient)("hwnd %04x [%04x] hrgn %04x, unc %04x, ncf %i\n",
 206                       wnd->hwndSelf, wnd->hrgnUpdate, hRgn, uncFlags, wnd->flags & WIN_NEEDS_NCPAINT);
 207
 208     /* desktop window doesn't have a nonclient area */
 209     if(wnd->hwndSelf == GetDesktopWindow())
 210     {
 211         wnd->flags &= ~WIN_NEEDS_NCPAINT;
 212         if( wnd->hrgnUpdate > 1 )
 213         {
 214             if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 215             CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 216             hrgnRet = hRgn;
 217         }
 218         else
 219         {
 220             hrgnRet = wnd->hrgnUpdate;
 221         }
 222         return hrgnRet;
 223     }
 224
 225     if ((wnd->hwndSelf == GetForegroundWindow()) &&
 226         !(wnd->flags & WIN_NCACTIVATED) )
 227     {
 228         wnd->flags |= WIN_NCACTIVATED;
 229         uncFlags |= UNC_ENTIRE;
 230     }
 231
 232     /*
 233      * If the window's non-client area needs to be painted,
 234      */
 235     if ( ( wnd->flags & WIN_NEEDS_NCPAINT ) &&
 236          !WIN_HaveToDelayNCPAINT(wnd->hwndSelf, uncFlags) )
 237     {
 238             RECT r2, r3;
 239
 240             wnd->flags &= ~WIN_NEEDS_NCPAINT;
 241             GETCLIENTRECTW( wnd, r );
 242
 243             TRACE_(nonclient)( "\tclient box (%i,%i-%i,%i), hrgnUpdate %04x\n",
 244                                 r.left, r.top, r.right, r.bottom, wnd->hrgnUpdate );
 245             if( wnd->hrgnUpdate > 1 )
 246             {
 247                 /* Check if update rgn overlaps with nonclient area */
 248
 249                 GetRgnBox( wnd->hrgnUpdate, &r2 );
 250                 UnionRect( &r3, &r2, &r );
 251                 if( r3.left != r.left || r3.top != r.top ||
 252                     r3.right != r.right || r3.bottom != r.bottom ) /* it does */
 253                 {
 254                     /* crop hrgnUpdate, save old one in hClip - the only
 255                      * case that places a valid region handle in hClip */
 256
 257                     hClip = wnd->hrgnUpdate;
 258                     wnd->hrgnUpdate = crop_rgn( hRgn, hClip, &r );
 259                     if( uncFlags & UNC_REGION ) hrgnRet = hClip;
 260                 }
 261
 262                 if( uncFlags & UNC_CHECK )
 263                 {
 264                     GetRgnBox( wnd->hrgnUpdate, &r3 );
 265                     if( IsRectEmpty( &r3 ) )
 266                     {
 267                         /* delete the update region since all invalid
 268                          * parts were in the nonclient area */
 269
 270                         DeleteObject( wnd->hrgnUpdate );
 271                         wnd->hrgnUpdate = 0;
 272                         if(!(wnd->flags & WIN_INTERNAL_PAINT))
 273                             add_paint_count( wnd->hwndSelf, -1 );
 274
 275                         wnd->flags &= ~WIN_NEEDS_ERASEBKGND;
 276                     }
 277                 }
 278
 279                 if(!hClip && wnd->hrgnUpdate ) goto copyrgn;
 280             }
 281             else
 282             if( wnd->hrgnUpdate == 1 )/* entire window */
 283             {
 284                 if( uncFlags & UNC_UPDATE ) wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 285                 if( uncFlags & UNC_REGION ) hrgnRet = 1;
 286                 uncFlags |= UNC_ENTIRE;
 287             }
 288     }
 289     else /* no WM_NCPAINT unless forced */
 290     {
 291         if( wnd->hrgnUpdate >  1 )
 292         {
 293 copyrgn:
 294             if( uncFlags & UNC_REGION )
 295             {
 296                 if (!hRgn) hRgn = CreateRectRgn( 0, 0, 0, 0 );
 297                 CombineRgn( hRgn, wnd->hrgnUpdate, 0, RGN_COPY );
 298                 hrgnRet = hRgn;
 299             }
 300         }
 301         else
 302         if( wnd->hrgnUpdate == 1 && (uncFlags & UNC_UPDATE) )
 303         {
 304             GETCLIENTRECTW( wnd, r );
 305             wnd->hrgnUpdate = CreateRectRgnIndirect( &r );
 306             if( uncFlags & UNC_REGION ) hrgnRet = 1;
 307         }
 308     }
 309
 310     if(!hClip && (uncFlags & UNC_ENTIRE) )
 311     {
 312         /* still don't do anything if there is no nonclient area */
 313         hClip = (memcmp( &wnd->rectWindow, &wnd->rectClient, sizeof(RECT) ) != 0);
 314     }
 315
 316     if( hClip ) /* NOTE: WM_NCPAINT allows wParam to be 1 */
 317     {
 318         if ( hClip == hrgnRet && hrgnRet > 1 ) {
 319             hClip = CreateRectRgn( 0, 0, 0, 0 );
 320             CombineRgn( hClip, hrgnRet, 0, RGN_COPY );
 321         }
 322
 323         SendMessageA( wnd->hwndSelf, WM_NCPAINT, hClip, 0L );
 324         if( (hClip > 1) && (hClip != hRgn) && (hClip != hrgnRet) )
 325             DeleteObject( hClip );
 326         /*
 327          * Since all Window locks are suspended while processing the WM_NCPAINT
 328          * we want to make sure the window still exists before continuing.
 329          */
 330         if (!IsWindow(wnd->hwndSelf))
 331         {
 332           DeleteObject(hrgnRet);
 333           hrgnRet=0;
 334         }
 335     }
 336
 337     TRACE_(nonclient)("returning %04x (hClip = %04x, hrgnUpdate = %04x)\n", hrgnRet, hClip, wnd->hrgnUpdate );
 338
 339     return hrgnRet;
 340 }
 341
 342
 343 /***********************************************************************
 344  *              RDW_ValidateParent [RDW_UpdateRgns() helper]
 345  *
 346  *  Validate the portions of parents that are covered by a validated child
 347  *  wndPtr = child
 348  */
 349 static void RDW_ValidateParent(WND *wndChild)
 350 {
 351     HWND parent;
 352     HRGN hrg;
 353
 354     if (wndChild->hrgnUpdate == 1 ) {
 355         RECT r;
 356         r.left = 0;
 357         r.top = 0;
 358         r.right = wndChild->rectWindow.right - wndChild->rectWindow.left;
 359         r.bottom = wndChild->rectWindow.bottom - wndChild->rectWindow.top;
 360         hrg = CreateRectRgnIndirect( &r );
 361     } else
 362         hrg = wndChild->hrgnUpdate;
 363
 364     parent = GetAncestor( wndChild->hwndSelf, GA_PARENT );
 365     while (parent && parent != GetDesktopWindow())
 366     {
 367         WND *wndParent = WIN_FindWndPtr( parent );
 368         if (wndParent && !(wndParent->dwStyle & WS_CLIPCHILDREN))
 369         {
 370             if (wndParent->hrgnUpdate != 0)
 371             {
 372                 POINT ptOffset;
 373                 RECT rect, rectParent;
 374                 if( wndParent->hrgnUpdate == 1 )
 375                 {
 376                    RECT r;
 377
 378                    r.left = 0;
 379                    r.top = 0;
 380                    r.right = wndParent->rectWindow.right - wndParent->rectWindow.left;
 381                    r.bottom = wndParent->rectWindow.bottom - wndParent->rectWindow.top;
 382
 383                    wndParent->hrgnUpdate = CreateRectRgnIndirect( &r );
 384                 }
 385                 /* we must offset the child region by the offset of the child rect in the parent */
 386                 GetWindowRect(wndParent->hwndSelf, &rectParent);
 387                 GetWindowRect(wndChild->hwndSelf, &rect);
 388                 ptOffset.x = rect.left - rectParent.left;
 389                 ptOffset.y = rect.top - rectParent.top;
 390                 OffsetRgn( hrg, ptOffset.x, ptOffset.y );
 391                 CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF );
 392                 OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
 393             }
 394         }
 395         WIN_ReleaseWndPtr( wndParent );
 396         parent = GetAncestor( parent, GA_PARENT );
 397     }
 398     if (hrg != wndChild->hrgnUpdate) DeleteObject( hrg );
 399 }
 400
 401 /***********************************************************************
 402  *              RDW_UpdateRgns [RedrawWindow() helper]
 403  *
 404  *  Walks the window tree and adds/removes parts of the hRgn to/from update
 405  *  regions of windows that overlap it. Also, manages internal paint flags.
 406  *
 407  *  NOTE: Walks the window tree so the caller must lock it.
 408  *        MUST preserve hRgn (can modify but then has to restore).
 409  */
 410 static void RDW_UpdateRgns( WND* wndPtr, HRGN hRgn, UINT flags, BOOL firstRecursLevel )
 411 {
 412     /*
 413      * Called only when one of the following is set:
 414      * (RDW_INVALIDATE | RDW_VALIDATE | RDW_INTERNALPAINT | RDW_NOINTERNALPAINT)
 415      */
 416
 417     BOOL bHadOne =  wndPtr->hrgnUpdate && hRgn;
 418     BOOL bChildren =  (!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 419                        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) );
 420     RECT r;
 421
 422     r.left = 0;
 423     r.top = 0;
 424     r.right = wndPtr->rectWindow.right - wndPtr->rectWindow.left;
 425     r.bottom = wndPtr->rectWindow.bottom - wndPtr->rectWindow.top;
 426
 427     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", wndPtr->hwndSelf, wndPtr->hrgnUpdate, hRgn, flags );
 428
 429     if( flags & RDW_INVALIDATE )
 430     {
 431         if( hRgn > 1 )
 432         {
 433             switch ((UINT)wndPtr->hrgnUpdate)
 434             {
 435                 default:
 436                         CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_OR );
 437                         /* fall through */
 438                 case 0:
 439                         wndPtr->hrgnUpdate = crop_rgn( wndPtr->hrgnUpdate,
 440                                                        wndPtr->hrgnUpdate ? wndPtr->hrgnUpdate : hRgn,
 441                                                        &r );
 442                         if( !bHadOne )
 443                         {
 444                             GetRgnBox( wndPtr->hrgnUpdate, &r );
 445                             if( IsRectEmpty( &r ) )
 446                             {
 447                                 DeleteObject( wndPtr->hrgnUpdate );
 448                                 wndPtr->hrgnUpdate = 0;
 449                                 goto end;
 450                             }
 451                         }
 452                         break;
 453                 case 1: /* already an entire window */
 454                         break;
 455             }
 456         }
 457         else if( hRgn == 1 )
 458         {
 459             if( wndPtr->hrgnUpdate > 1 )
 460                 DeleteObject( wndPtr->hrgnUpdate );
 461             wndPtr->hrgnUpdate = 1;
 462         }
 463         else
 464             hRgn = wndPtr->hrgnUpdate;  /* this is a trick that depends on code in PAINT_RedrawWindow() */
 465
 466         if( !bHadOne && !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 467             add_paint_count( wndPtr->hwndSelf, 1 );
 468
 469         if (flags & RDW_FRAME) wndPtr->flags |= WIN_NEEDS_NCPAINT;
 470         if (flags & RDW_ERASE) wndPtr->flags |= WIN_NEEDS_ERASEBKGND;
 471         flags    |= RDW_FRAME;
 472     }
 473     else if( flags & RDW_VALIDATE )
 474     {
 475         if( wndPtr->hrgnUpdate )
 476         {
 477             if( hRgn > 1 )
 478             {
 479                 if( wndPtr->hrgnUpdate == 1 )
 480                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r );
 481
 482                 if( CombineRgn( wndPtr->hrgnUpdate, wndPtr->hrgnUpdate, hRgn, RGN_DIFF )
 483                     == NULLREGION )
 484                 {
 485                     DeleteObject( wndPtr->hrgnUpdate );
 486                     wndPtr->hrgnUpdate = 0;
 487                 }
 488             }
 489             else /* validate everything */
 490             {
 491                 if( wndPtr->hrgnUpdate > 1 ) DeleteObject( wndPtr->hrgnUpdate );
 492                 wndPtr->hrgnUpdate = 0;
 493             }
 494
 495             if( !wndPtr->hrgnUpdate )
 496             {
 497                 wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 498                 if( !(wndPtr->flags & WIN_INTERNAL_PAINT) )
 499                     add_paint_count( wndPtr->hwndSelf, -1 );
 500             }
 501         }
 502
 503         if (flags & RDW_NOFRAME) wndPtr->flags &= ~WIN_NEEDS_NCPAINT;
 504         if (flags & RDW_NOERASE) wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 505
 506     }
 507
 508     if ((firstRecursLevel) && (wndPtr->hrgnUpdate != 0) && (flags & RDW_UPDATENOW))
 509         RDW_ValidateParent(wndPtr); /* validate parent covered by region */
 510
 511     /* in/validate child windows that intersect with the region if it
 512      * is a valid handle. */
 513
 514     if( flags & (RDW_INVALIDATE | RDW_VALIDATE) )
 515     {
 516         HWND *list;
 517         if( hRgn > 1 && bChildren && (list = WIN_ListChildren( wndPtr->hwndSelf )))
 518         {
 519             POINT ptTotal, prevOrigin = {0,0};
 520             POINT ptClient;
 521             INT i;
 522
 523             ptClient.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 524             ptClient.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 525
 526             for(i = ptTotal.x = ptTotal.y = 0; list[i]; i++)
 527             {
 528                 WND *wnd = WIN_FindWndPtr( list[i] );
 529                 if (!wnd) continue;
 530                 if( wnd->dwStyle & WS_VISIBLE )
 531                 {
 532                     POINT ptOffset;
 533
 534                     r.left = wnd->rectWindow.left + ptClient.x;
 535                     r.right = wnd->rectWindow.right + ptClient.x;
 536                     r.top = wnd->rectWindow.top + ptClient.y;
 537                     r.bottom = wnd->rectWindow.bottom + ptClient.y;
 538
 539                     ptOffset.x = r.left - prevOrigin.x;
 540                     ptOffset.y = r.top - prevOrigin.y;
 541                     OffsetRect( &r, -ptTotal.x, -ptTotal.y );
 542
 543                     if( RectInRegion( hRgn, &r ) )
 544                     {
 545                         OffsetRgn( hRgn, -ptOffset.x, -ptOffset.y );
 546                         RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 547                         prevOrigin.x = r.left + ptTotal.x;
 548                         prevOrigin.y = r.top + ptTotal.y;
 549                         ptTotal.x += ptOffset.x;
 550                         ptTotal.y += ptOffset.y;
 551                     }
 552                 }
 553                 WIN_ReleaseWndPtr( wnd );
 554             }
 555             HeapFree( GetProcessHeap(), 0, list );
 556             OffsetRgn( hRgn, ptTotal.x, ptTotal.y );
 557             bChildren = 0;
 558         }
 559     }
 560
 561     /* handle hRgn == 1 (alias for entire window) and/or internal paint recursion */
 562
 563     if( bChildren )
 564     {
 565         HWND *list;
 566         if ((list = WIN_ListChildren( wndPtr->hwndSelf )))
 567         {
 568             INT i;
 569             for (i = 0; list[i]; i++)
 570             {
 571                 WND *wnd = WIN_FindWndPtr( list[i] );
 572                 if (!wnd) continue;
 573                 if( wnd->dwStyle & WS_VISIBLE )
 574                     RDW_UpdateRgns( wnd, hRgn, flags, FALSE );
 575                 WIN_ReleaseWndPtr( wnd );
 576             }
 577             HeapFree( GetProcessHeap(), 0, list );
 578         }
 579     }
 580
 581 end:
 582
 583     /* Set/clear internal paint flag */
 584
 585     if (flags & RDW_INTERNALPAINT)
 586     {
 587         if ( !wndPtr->hrgnUpdate && !(wndPtr->flags & WIN_INTERNAL_PAINT))
 588             add_paint_count( wndPtr->hwndSelf, 1 );
 589         wndPtr->flags |= WIN_INTERNAL_PAINT;
 590     }
 591     else if (flags & RDW_NOINTERNALPAINT)
 592     {
 593         if ( !wndPtr->hrgnUpdate && (wndPtr->flags & WIN_INTERNAL_PAINT))
 594             add_paint_count( wndPtr->hwndSelf, -1 );
 595         wndPtr->flags &= ~WIN_INTERNAL_PAINT;
 596     }
 597 }
 598
 599 /***********************************************************************
 600  *           RDW_Paint [RedrawWindow() helper]
 601  *
 602  * Walks the window tree and paints/erases windows that have
 603  * nonzero update regions according to redraw flags. hrgn is a scratch
 604  * region passed down during recursion. Must not be 1.
 605  *
 606  */
 607 static HRGN RDW_Paint( WND* wndPtr, HRGN hrgn, UINT flags, UINT ex )
 608 {
 609 /* NOTE: wndPtr is locked by caller.
 610  *
 611  * FIXME: Windows uses WM_SYNCPAINT to cut down the number of intertask
 612  * SendMessage() calls. This is a comment inside DefWindowProc() source
 613  * from 16-bit SDK:
 614  *
 615  *   This message avoids lots of inter-app message traffic
 616  *   by switching to the other task and continuing the
 617  *   recursion there.
 618  *
 619  * wParam         = flags
 620  * LOWORD(lParam) = hrgnClip
 621  * HIWORD(lParam) = hwndSkip  (not used; always NULL)
 622  *
 623  */
 624     HDC  hDC;
 625     HWND hWnd = wndPtr->hwndSelf;
 626     BOOL bIcon = ((wndPtr->dwStyle & WS_MINIMIZE) && GetClassLongA(hWnd, GCL_HICON));
 627
 628       /* Erase/update the window itself ... */
 629
 630     TRACE("\thwnd %04x [%04x] -> hrgn [%04x], flags [%04x]\n", hWnd, wndPtr->hrgnUpdate, hrgn, flags );
 631
 632     /*
 633      * Check if this window should delay it's processing of WM_NCPAINT.
 634      * See WIN_HaveToDelayNCPAINT for a description of the mechanism
 635      */
 636     if ((ex & RDW_EX_DELAY_NCPAINT) || WIN_HaveToDelayNCPAINT(wndPtr->hwndSelf, 0) )
 637         ex |= RDW_EX_DELAY_NCPAINT;
 638
 639     if (flags & RDW_UPDATENOW)
 640     {
 641         if (wndPtr->hrgnUpdate) /* wm_painticon wparam is 1 */
 642             SendMessageW( hWnd, (bIcon) ? WM_PAINTICON : WM_PAINT, bIcon, 0 );
 643     }
 644     else if (flags & RDW_ERASENOW)
 645     {
 646         UINT dcx = DCX_INTERSECTRGN | DCX_USESTYLE | DCX_KEEPCLIPRGN | DCX_WINDOWPAINT | DCX_CACHE;
 647         HRGN hrgnRet;
 648
 649         hrgnRet = WIN_UpdateNCRgn(wndPtr,
 650                                   hrgn,
 651                                   UNC_REGION | UNC_CHECK |
 652                                   ((ex & RDW_EX_DELAY_NCPAINT) ? UNC_DELAY_NCPAINT : 0) );
 653
 654         if( hrgnRet )
 655         {
 656             if( hrgnRet > 1 ) hrgn = hrgnRet; else hrgnRet = 0; /* entire client */
 657             if( wndPtr->flags & WIN_NEEDS_ERASEBKGND )
 658             {
 659                 if( bIcon ) dcx |= DCX_WINDOW;
 660                 else
 661                 if( hrgnRet )
 662                     OffsetRgn( hrgnRet, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 663                                         wndPtr->rectWindow.top  - wndPtr->rectClient.top);
 664                 else
 665                     dcx &= ~DCX_INTERSECTRGN;
 666                 if (( hDC = GetDCEx( hWnd, hrgnRet, dcx )) )
 667                 {
 668                     if (SendMessageW( hWnd, (bIcon) ? WM_ICONERASEBKGND : WM_ERASEBKGND,
 669                                       (WPARAM)hDC, 0 ))
 670                     wndPtr->flags &= ~WIN_NEEDS_ERASEBKGND;
 671                     ReleaseDC( hWnd, hDC );
 672                 }
 673             }
 674         }
 675     }
 676
 677     if( !IsWindow(hWnd) ) return hrgn;
 678
 679       /* ... and its child windows */
 680
 681     if(!(flags & RDW_NOCHILDREN) && !(wndPtr->dwStyle & WS_MINIMIZE) &&
 682        ((flags & RDW_ALLCHILDREN) || !(wndPtr->dwStyle & WS_CLIPCHILDREN)) )
 683     {
 684         HWND *list, *phwnd;
 685
 686         if( (list = WIN_ListChildren( wndPtr->hwndSelf )) )
 687         {
 688             for (phwnd = list; *phwnd; phwnd++)
 689             {
 690                 if (!(wndPtr = WIN_FindWndPtr( *phwnd ))) continue;
 691                 if ( (wndPtr->dwStyle & WS_VISIBLE) &&
 692                      (wndPtr->hrgnUpdate || (wndPtr->flags & WIN_INTERNAL_PAINT)) )
 693                     hrgn = RDW_Paint( wndPtr, hrgn, flags, ex );
 694                 WIN_ReleaseWndPtr(wndPtr);
 695             }
 696             HeapFree( GetProcessHeap(), 0, list );
 697         }
 698     }
 699
 700     return hrgn;
 701 }
 702
 703
 704 /***********************************************************************
 705  *              RedrawWindow (USER32.@)
 706  */
 707 BOOL WINAPI RedrawWindow( HWND hwnd, const RECT *rectUpdate,
 708                               HRGN hrgnUpdate, UINT flags )
 709 {
 710     HRGN hRgn = 0;
 711     RECT r, r2;
 712     POINT pt;
 713     WND* wndPtr;
 714
 715     if (!hwnd) hwnd = GetDesktopWindow();
 716
 717     /* check if the window or its parents are visible/not minimized */
 718
 719     if (!WIN_IsWindowDrawable( hwnd, !(flags & RDW_FRAME) )) return TRUE;
 720
 721     /* process pending events and messages before painting */
 722     if (flags & RDW_UPDATENOW)
 723         MsgWaitForMultipleObjects( 0, NULL, FALSE, 0, QS_ALLINPUT );
 724
 725     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return FALSE;
 726     if (TRACE_ON(win))
 727     {
 728         if( hrgnUpdate )
 729         {
 730             GetRgnBox( hrgnUpdate, &r );
 731             TRACE( "%04x (%04x) NULL %04x box (%i,%i-%i,%i) flags=%04x\n",
 732                   hwnd, wndPtr->hrgnUpdate, hrgnUpdate, r.left, r.top, r.right, r.bottom, flags );
 733         }
 734         else
 735         {
 736             if( rectUpdate )
 737                 r = *rectUpdate;
 738             else
 739                 SetRectEmpty( &r );
 740             TRACE( "%04x (%04x) %s %d,%d-%d,%d %04x flags=%04x\n",
 741                         hwnd, wndPtr->hrgnUpdate, rectUpdate ? "rect" : "NULL", r.left,
 742                         r.top, r.right, r.bottom, hrgnUpdate, flags );
 743         }
 744     }
 745
 746     /* prepare an update region in window coordinates */
 747
 748     if (((flags & (RDW_INVALIDATE|RDW_FRAME)) == (RDW_INVALIDATE|RDW_FRAME)) ||
 749         ((flags & (RDW_VALIDATE|RDW_NOFRAME)) == (RDW_VALIDATE|RDW_NOFRAME)))
 750         r = wndPtr->rectWindow;
 751     else
 752         r = wndPtr->rectClient;
 753
 754     pt.x = wndPtr->rectClient.left - wndPtr->rectWindow.left;
 755     pt.y = wndPtr->rectClient.top - wndPtr->rectWindow.top;
 756     OffsetRect( &r, -wndPtr->rectClient.left, -wndPtr->rectClient.top );
 757
 758     if (flags & RDW_INVALIDATE)  /* ------------------------- Invalidate */
 759     {
 760         /* If the window doesn't have hrgnUpdate we leave hRgn zero
 761          * and put a new region straight into wndPtr->hrgnUpdate
 762          * so that RDW_UpdateRgns() won't have to do any extra work.
 763          */
 764
 765         if( hrgnUpdate )
 766         {
 767             if( wndPtr->hrgnUpdate )
 768             {
 769                 hRgn = CreateRectRgn( 0, 0, 0, 0 );
 770                 CombineRgn( hRgn, hrgnUpdate, 0, RGN_COPY );
 771                 OffsetRgn( hRgn, pt.x, pt.y );
 772             }
 773             else
 774             {
 775                 wndPtr->hrgnUpdate = crop_rgn( 0, hrgnUpdate, &r );
 776                 OffsetRgn( wndPtr->hrgnUpdate, pt.x, pt.y );
 777             }
 778         }
 779         else if( rectUpdate )
 780         {
 781             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 782             OffsetRect( &r2, pt.x, pt.y );
 783             if( wndPtr->hrgnUpdate == 0 )
 784                 wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 785             else
 786                 hRgn = CreateRectRgnIndirect( &r2 );
 787         }
 788         else /* entire window or client depending on RDW_FRAME */
 789         {
 790             if( flags & RDW_FRAME )
 791             {
 792                 if (wndPtr->hrgnUpdate) hRgn = 1;
 793                 else wndPtr->hrgnUpdate = 1;
 794             }
 795             else
 796             {
 797                 GETCLIENTRECTW( wndPtr, r2 );
 798                 if( wndPtr->hrgnUpdate == 0 )
 799                     wndPtr->hrgnUpdate = CreateRectRgnIndirect( &r2 );
 800                 else
 801                     hRgn = CreateRectRgnIndirect( &r2 );
 802             }
 803         }
 804     }
 805     else if (flags & RDW_VALIDATE)  /* ------------------------- Validate */
 806     {
 807         /* In this we cannot leave with zero hRgn */
 808         if( hrgnUpdate )
 809         {
 810             hRgn = crop_rgn( hRgn, hrgnUpdate,  &r );
 811             OffsetRgn( hRgn, pt.x, pt.y );
 812             GetRgnBox( hRgn, &r2 );
 813             if( IsRectEmpty( &r2 ) ) goto END;
 814         }
 815         else if( rectUpdate )
 816         {
 817             if( !IntersectRect( &r2, &r, rectUpdate ) ) goto END;
 818                 OffsetRect( &r2, pt.x, pt.y );
 819             hRgn = CreateRectRgnIndirect( &r2 );
 820         }
 821         else /* entire window or client depending on RDW_NOFRAME */
 822         {
 823             if( flags & RDW_NOFRAME )
 824                 hRgn = 1;
 825             else
 826             {
 827                 GETCLIENTRECTW( wndPtr, r2 );
 828                 hRgn = CreateRectRgnIndirect( &r2 );
 829             }
 830         }
 831     }
 832
 833     /* At this point hRgn is either an update region in window coordinates or 1 or 0 */
 834
 835     RDW_UpdateRgns( wndPtr, hRgn, flags, TRUE );
 836
 837     /* Erase/update windows, from now on hRgn is a scratch region */
 838
 839     hRgn = RDW_Paint( wndPtr, (hRgn == 1) ? 0 : hRgn, flags, 0 );
 840
 841 END:
 842     if( hRgn > 1 && (hRgn != hrgnUpdate) )
 843         DeleteObject(hRgn );
 844     WIN_ReleaseWndPtr(wndPtr);
 845     return TRUE;
 846 }
 847
 848
 849 /***********************************************************************
 850  *              UpdateWindow (USER32.@)
 851  */
 852 void WINAPI UpdateWindow( HWND hwnd )
 853 {
 854     RedrawWindow( hwnd, NULL, 0, RDW_UPDATENOW | RDW_ALLCHILDREN );
 855 }
 856
 857
 858 /***********************************************************************
 859  *              InvalidateRgn (USER32.@)
 860  */
 861 BOOL WINAPI InvalidateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 862 {
 863     return RedrawWindow(hwnd, NULL, hrgn, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 864 }
 865
 866
 867 /***********************************************************************
 868  *              InvalidateRect (USER32.@)
 869  */
 870 BOOL WINAPI InvalidateRect( HWND hwnd, const RECT *rect, BOOL erase )
 871 {
 872     return RedrawWindow( hwnd, rect, 0, RDW_INVALIDATE | (erase ? RDW_ERASE : 0) );
 873 }
 874
 875
 876 /***********************************************************************
 877  *              ValidateRgn (USER32.@)
 878  */
 879 BOOL WINAPI ValidateRgn( HWND hwnd, HRGN hrgn )
 880 {
 881     return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE | RDW_NOCHILDREN );
 882 }
 883
 884
 885 /***********************************************************************
 886  *              ValidateRect (USER32.@)
 887  */
 888 BOOL WINAPI ValidateRect( HWND hwnd, const RECT *rect )
 889 {
 890     return RedrawWindow( hwnd, rect, 0, RDW_VALIDATE | RDW_NOCHILDREN );
 891 }
 892
 893
 894 /***********************************************************************
 895  *              GetUpdateRect (USER32.@)
 896  */
 897 BOOL WINAPI GetUpdateRect( HWND hwnd, LPRECT rect, BOOL erase )
 898 {
 899     BOOL retvalue;
 900     WND * wndPtr = WIN_FindWndPtr( hwnd );
 901     if (!wndPtr) return FALSE;
 902
 903     if (rect)
 904     {
 905         if (wndPtr->hrgnUpdate > 1)
 906         {
 907             HRGN hrgn = CreateRectRgn( 0, 0, 0, 0 );
 908             if (GetUpdateRgn( hwnd, hrgn, erase ) == ERROR)
 909             {
 910                 retvalue = FALSE;
 911                 goto END;
 912             }
 913             GetRgnBox( hrgn, rect );
 914             DeleteObject( hrgn );
 915             if (GetClassLongA(wndPtr->hwndSelf, GCL_STYLE) & CS_OWNDC)
 916             {
 917                 if (GetMapMode(wndPtr->dce->hDC) != MM_TEXT)
 918                 {
 919                     DPtoLP (wndPtr->dce->hDC, (LPPOINT)rect,  2);
 920                 }
 921             }
 922         }
 923         else
 924         if( wndPtr->hrgnUpdate == 1 )
 925         {
 926             GetClientRect( hwnd, rect );
 927             if (erase) RedrawWindow( hwnd, NULL, 0, RDW_FRAME | RDW_ERASENOW | RDW_NOCHILDREN );
 928         }
 929         else
 930             SetRectEmpty( rect );
 931     }
 932     retvalue = (wndPtr->hrgnUpdate >= 1);
 933 END:
 934     WIN_ReleaseWndPtr(wndPtr);
 935     return retvalue;
 936 }
 937
 938
 939 /***********************************************************************
 940  *              GetUpdateRgn (USER32.@)
 941  */
 942 INT WINAPI GetUpdateRgn( HWND hwnd, HRGN hrgn, BOOL erase )
 943 {
 944     INT retval;
 945     WND * wndPtr = WIN_FindWndPtr( hwnd );
 946     if (!wndPtr) return ERROR;
 947
 948     if (wndPtr->hrgnUpdate == 0)
 949     {
 950         SetRectRgn( hrgn, 0, 0, 0, 0 );
 951         retval = NULLREGION;
 952         goto END;
 953     }
 954     else
 955     if (wndPtr->hrgnUpdate == 1)
 956     {
 957         SetRectRgn( hrgn, 0, 0, wndPtr->rectClient.right - wndPtr->rectClient.left,
 958                                 wndPtr->rectClient.bottom - wndPtr->rectClient.top );
 959         retval = SIMPLEREGION;
 960     }
 961     else
 962     {
 963         retval = CombineRgn( hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY );
 964         OffsetRgn( hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 965                          wndPtr->rectWindow.top - wndPtr->rectClient.top );
 966     }
 967     if (erase) RedrawWindow( hwnd, NULL, 0, RDW_ERASENOW | RDW_NOCHILDREN );
 968 END:
 969     WIN_ReleaseWndPtr(wndPtr);
 970     return retval;
 971 }
 972
 973
 974 /***********************************************************************
 975  *              ExcludeUpdateRgn (USER32.@)
 976  */
 977 INT WINAPI ExcludeUpdateRgn( HDC hdc, HWND hwnd )
 978 {
 979     RECT rect;
 980     WND * wndPtr;
 981
 982     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return ERROR;
 983
 984     if (wndPtr->hrgnUpdate)
 985     {
 986         INT ret;
 987         HRGN hrgn = CreateRectRgn(wndPtr->rectWindow.left - wndPtr->rectClient.left,
 988                                       wndPtr->rectWindow.top - wndPtr->rectClient.top,
 989                                       wndPtr->rectWindow.right - wndPtr->rectClient.left,
 990                                       wndPtr->rectWindow.bottom - wndPtr->rectClient.top);
 991         if( wndPtr->hrgnUpdate > 1 )
 992         {
 993             CombineRgn(hrgn, wndPtr->hrgnUpdate, 0, RGN_COPY);
 994             OffsetRgn(hrgn, wndPtr->rectWindow.left - wndPtr->rectClient.left,
 995                             wndPtr->rectWindow.top - wndPtr->rectClient.top );
 996         }
 997
 998         /* do ugly coordinate translations in dce.c */
 999
1000         ret = DCE_ExcludeRgn( hdc, hwnd, hrgn );
1001         DeleteObject( hrgn );
1002         WIN_ReleaseWndPtr(wndPtr);
1003         return ret;
1004     }
1005     WIN_ReleaseWndPtr(wndPtr);
1006     return GetClipBox( hdc, &rect );
1007 }
1008
1009
1010
1011 /***********************************************************************
1012  *              FillRect (USER.81)
1013  * NOTE
1014  *   The Win16 variant doesn't support special color brushes like
1015  *   the Win32 one, despite the fact that Win16, as well as Win32,
1016  *   supports special background brushes for a window class.
1017  */
1018 INT16 WINAPI FillRect16( HDC16 hdc, const RECT16 *rect, HBRUSH16 hbrush )
1019 {
1020     HBRUSH prevBrush;
1021
1022     /* coordinates are logical so we cannot fast-check 'rect',
1023      * it will be done later in the PatBlt().
1024      */
1025
1026     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1027     PatBlt( hdc, rect->left, rect->top,
1028               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1029     SelectObject( hdc, prevBrush );
1030     return 1;
1031 }
1032
1033
1034 /***********************************************************************
1035  *              FillRect (USER32.@)
1036  */
1037 INT WINAPI FillRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1038 {
1039     HBRUSH prevBrush;
1040
1041     if (hbrush <= (HBRUSH) (COLOR_MAX + 1)) {
1042         hbrush = GetSysColorBrush( (INT) hbrush - 1 );
1043     }
1044
1045     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1046     PatBlt( hdc, rect->left, rect->top,
1047               rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
1048     SelectObject( hdc, prevBrush );
1049     return 1;
1050 }
1051
1052
1053 /***********************************************************************
1054  *              InvertRect (USER.82)
1055  */
1056 void WINAPI InvertRect16( HDC16 hdc, const RECT16 *rect )
1057 {
1058     PatBlt( hdc, rect->left, rect->top,
1059               rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
1060 }
1061
1062
1063 /***********************************************************************
1064  *              InvertRect (USER32.@)
1065  */
1066 BOOL WINAPI InvertRect( HDC hdc, const RECT *rect )
1067 {
1068     return PatBlt( hdc, rect->left, rect->top,
1069                      rect->right - rect->left, rect->bottom - rect->top,
1070                      DSTINVERT );
1071 }
1072
1073
1074 /***********************************************************************
1075  *              FrameRect (USER32.@)
1076  */
1077 INT WINAPI FrameRect( HDC hdc, const RECT *rect, HBRUSH hbrush )
1078 {
1079     HBRUSH prevBrush;
1080     RECT r = *rect;
1081
1082     if ( (r.right <= r.left) || (r.bottom <= r.top) ) return 0;
1083     if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
1084
1085     PatBlt( hdc, r.left, r.top, 1,
1086               r.bottom - r.top, PATCOPY );
1087     PatBlt( hdc, r.right - 1, r.top, 1,
1088               r.bottom - r.top, PATCOPY );
1089     PatBlt( hdc, r.left, r.top,
1090               r.right - r.left, 1, PATCOPY );
1091     PatBlt( hdc, r.left, r.bottom - 1,
1092               r.right - r.left, 1, PATCOPY );
1093
1094     SelectObject( hdc, prevBrush );
1095     return TRUE;
1096 }
1097
1098
1099 /***********************************************************************
1100  *              FrameRect (USER.83)
1101  */
1102 INT16 WINAPI FrameRect16( HDC16 hdc, const RECT16 *rect16, HBRUSH16 hbrush )
1103 {
1104     RECT rect;
1105     CONV_RECT16TO32( rect16, &rect );
1106     return FrameRect( hdc, &rect, hbrush );
1107 }
1108
1109
1110 /***********************************************************************
1111  *              DrawFocusRect (USER.466)
1112  */
1113 void WINAPI DrawFocusRect16( HDC16 hdc, const RECT16* rc )
1114 {
1115     RECT rect32;
1116     CONV_RECT16TO32( rc, &rect32 );
1117     DrawFocusRect( hdc, &rect32 );
1118 }
1119
1120
1121 /***********************************************************************
1122  *              DrawFocusRect (USER32.@)
1123  *
1124  * FIXME: PatBlt(PATINVERT) with background brush.
1125  */
1126 BOOL WINAPI DrawFocusRect( HDC hdc, const RECT* rc )
1127 {
1128     HBRUSH hOldBrush;
1129     HPEN hOldPen, hNewPen;
1130     INT oldDrawMode, oldBkMode;
1131
1132     hOldBrush = SelectObject(hdc, GetStockObject(NULL_BRUSH));
1133     hNewPen = CreatePen(PS_ALTERNATE, 1, GetSysColor(COLOR_WINDOWTEXT));
1134     hOldPen = SelectObject(hdc, hNewPen);
1135     oldDrawMode = SetROP2(hdc, R2_XORPEN);
1136     oldBkMode = SetBkMode(hdc, TRANSPARENT);
1137
1138     Rectangle(hdc, rc->left, rc->top, rc->right, rc->bottom);
1139
1140     SetBkMode(hdc, oldBkMode);
1141     SetROP2(hdc, oldDrawMode);
1142     SelectObject(hdc, hOldPen);
1143     DeleteObject(hNewPen);
1144     SelectObject(hdc, hOldBrush);
1145
1146     return TRUE;
1147 }
1148
1149
1150 /**********************************************************************
1151  *              DrawAnimatedRects (USER32.@)
1152  */
1153 BOOL WINAPI DrawAnimatedRects( HWND hwnd, INT idAni,
1154                                    const RECT* lprcFrom,
1155                                    const RECT* lprcTo )
1156 {
1157     FIXME_(win)("(0x%x,%d,%p,%p): stub\n",hwnd,idAni,lprcFrom,lprcTo);
1158     return TRUE;
1159 }
1160
1161
1162 /**********************************************************************
1163  *          PAINTING_DrawStateJam
1164  *
1165  * Jams in the requested type in the dc
1166  */
1167 static BOOL PAINTING_DrawStateJam(HDC hdc, UINT opcode,
1168                                   DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1169                                   LPRECT rc, UINT dtflags, BOOL unicode )
1170 {
1171     HDC memdc;
1172     HBITMAP hbmsave;
1173     BOOL retval;
1174     INT cx = rc->right - rc->left;
1175     INT cy = rc->bottom - rc->top;
1176
1177     switch(opcode)
1178     {
1179     case DST_TEXT:
1180     case DST_PREFIXTEXT:
1181         if(unicode)
1182             return DrawTextW(hdc, (LPWSTR)lp, (INT)wp, rc, dtflags);
1183         else
1184             return DrawTextA(hdc, (LPSTR)lp, (INT)wp, rc, dtflags);
1185
1186     case DST_ICON:
1187         return DrawIcon(hdc, rc->left, rc->top, (HICON)lp);
1188
1189     case DST_BITMAP:
1190         memdc = CreateCompatibleDC(hdc);
1191         if(!memdc) return FALSE;
1192         hbmsave = (HBITMAP)SelectObject(memdc, (HBITMAP)lp);
1193         if(!hbmsave)
1194         {
1195             DeleteDC(memdc);
1196             return FALSE;
1197         }
1198         retval = BitBlt(hdc, rc->left, rc->top, cx, cy, memdc, 0, 0, SRCCOPY);
1199         SelectObject(memdc, hbmsave);
1200         DeleteDC(memdc);
1201         return retval;
1202
1203     case DST_COMPLEX:
1204         if(func) {
1205             BOOL bRet;
1206             /* DRAWSTATEPROC assumes that it draws at the center of coordinates  */
1207
1208             OffsetViewportOrgEx(hdc, rc->left, rc->top, NULL);
1209             bRet = func(hdc, lp, wp, cx, cy);
1210             /* Restore origin */
1211             OffsetViewportOrgEx(hdc, -rc->left, -rc->top, NULL);
1212             return bRet;
1213         } else
1214             return FALSE;
1215     }
1216     return FALSE;
1217 }
1218
1219 /**********************************************************************
1220  *      PAINTING_DrawState()
1221  */
1222 static BOOL PAINTING_DrawState(HDC hdc, HBRUSH hbr, DRAWSTATEPROC func, LPARAM lp, WPARAM wp,
1223                                INT x, INT y, INT cx, INT cy, UINT flags, BOOL unicode )
1224 {
1225     HBITMAP hbm, hbmsave;
1226     HFONT hfsave;
1227     HBRUSH hbsave, hbrtmp = 0;
1228     HDC memdc;
1229     RECT rc;
1230     UINT dtflags = DT_NOCLIP;
1231     COLORREF fg, bg;
1232     UINT opcode = flags & 0xf;
1233     INT len = wp;
1234     BOOL retval, tmp;
1235
1236     if((opcode == DST_TEXT || opcode == DST_PREFIXTEXT) && !len)    /* The string is '\0' terminated */
1237     {
1238         if(unicode)
1239             len = strlenW((LPWSTR)lp);
1240         else
1241             len = strlen((LPSTR)lp);
1242     }
1243
1244     /* Find out what size the image has if not given by caller */
1245     if(!cx || !cy)
1246     {
1247         SIZE s;
1248         CURSORICONINFO *ici;
1249         BITMAP bm;
1250
1251         switch(opcode)
1252         {
1253         case DST_TEXT:
1254         case DST_PREFIXTEXT:
1255             if(unicode)
1256                 retval = GetTextExtentPoint32W(hdc, (LPWSTR)lp, len, &s);
1257             else
1258                 retval = GetTextExtentPoint32A(hdc, (LPSTR)lp, len, &s);
1259             if(!retval) return FALSE;
1260             break;
1261
1262         case DST_ICON:
1263             ici = (CURSORICONINFO *)GlobalLock16((HGLOBAL16)lp);
1264             if(!ici) return FALSE;
1265             s.cx = ici->nWidth;
1266             s.cy = ici->nHeight;
1267             GlobalUnlock16((HGLOBAL16)lp);
1268             break;
1269
1270         case DST_BITMAP:
1271             if(!GetObjectA((HBITMAP)lp, sizeof(bm), &bm))
1272                 return FALSE;
1273             s.cx = bm.bmWidth;
1274             s.cy = bm.bmHeight;
1275             break;
1276
1277         case DST_COMPLEX: /* cx and cy must be set in this mode */
1278             return FALSE;
1279         }
1280
1281         if(!cx) cx = s.cx;
1282         if(!cy) cy = s.cy;
1283     }
1284
1285     rc.left   = x;
1286     rc.top    = y;
1287     rc.right  = x + cx;
1288     rc.bottom = y + cy;
1289
1290     if(flags & DSS_RIGHT)    /* This one is not documented in the win32.hlp file */
1291         dtflags |= DT_RIGHT;
1292     if(opcode == DST_TEXT)
1293         dtflags |= DT_NOPREFIX;
1294
1295     /* For DSS_NORMAL we just jam in the image and return */
1296     if((flags & 0x7ff0) == DSS_NORMAL)
1297     {
1298         return PAINTING_DrawStateJam(hdc, opcode, func, lp, len, &rc, dtflags, unicode);
1299     }
1300
1301     /* For all other states we need to convert the image to B/W in a local bitmap */
1302     /* before it is displayed */
1303     fg = SetTextColor(hdc, RGB(0, 0, 0));
1304     bg = SetBkColor(hdc, RGB(255, 255, 255));
1305     hbm = (HBITMAP)NULL; hbmsave = (HBITMAP)NULL;
1306     memdc = (HDC)NULL; hbsave = (HBRUSH)NULL;
1307     retval = FALSE; /* assume failure */
1308
1309     /* From here on we must use "goto cleanup" when something goes wrong */
1310     hbm     = CreateBitmap(cx, cy, 1, 1, NULL);
1311     if(!hbm) goto cleanup;
1312     memdc   = CreateCompatibleDC(hdc);
1313     if(!memdc) goto cleanup;
1314     hbmsave = (HBITMAP)SelectObject(memdc, hbm);
1315     if(!hbmsave) goto cleanup;
1316     rc.left = rc.top = 0;
1317     rc.right = cx;
1318     rc.bottom = cy;
1319     if(!FillRect(memdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH))) goto cleanup;
1320     SetBkColor(memdc, RGB(255, 255, 255));
1321     SetTextColor(memdc, RGB(0, 0, 0));
1322     hfsave  = (HFONT)SelectObject(memdc, GetCurrentObject(hdc, OBJ_FONT));
1323
1324     /* DST_COMPLEX may draw text as well,
1325      * so we must be sure that correct font is selected
1326      */
1327     if(!hfsave && (opcode <= DST_PREFIXTEXT)) goto cleanup;
1328     tmp = PAINTING_DrawStateJam(memdc, opcode, func, lp, len, &rc, dtflags, unicode);
1329     if(hfsave) SelectObject(memdc, hfsave);
1330     if(!tmp) goto cleanup;
1331
1332     /* This state cause the image to be dithered */
1333     if(flags & DSS_UNION)
1334     {
1335         hbsave = (HBRUSH)SelectObject(memdc, CACHE_GetPattern55AABrush());
1336         if(!hbsave) goto cleanup;
1337         tmp = PatBlt(memdc, 0, 0, cx, cy, 0x00FA0089);
1338         SelectObject(memdc, hbsave);
1339         if(!tmp) goto cleanup;
1340     }
1341
1342     if (flags & DSS_DISABLED)
1343        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DHILIGHT));
1344     else if (flags & DSS_DEFAULT)
1345        hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1346
1347     /* Draw light or dark shadow */
1348     if (flags & (DSS_DISABLED|DSS_DEFAULT))
1349     {
1350        if(!hbrtmp) goto cleanup;
1351        hbsave = (HBRUSH)SelectObject(hdc, hbrtmp);
1352        if(!hbsave) goto cleanup;
1353        if(!BitBlt(hdc, x+1, y+1, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1354        SelectObject(hdc, hbsave);
1355        DeleteObject(hbrtmp);
1356        hbrtmp = 0;
1357     }
1358
1359     if (flags & DSS_DISABLED)
1360     {
1361        hbr = hbrtmp = CreateSolidBrush(GetSysColor(COLOR_3DSHADOW));
1362        if(!hbrtmp) goto cleanup;
1363     }
1364     else if (!hbr)
1365     {
1366        hbr = (HBRUSH)GetStockObject(BLACK_BRUSH);
1367     }
1368
1369     hbsave = (HBRUSH)SelectObject(hdc, hbr);
1370
1371     if(!BitBlt(hdc, x, y, cx, cy, memdc, 0, 0, 0x00B8074A)) goto cleanup;
1372
1373     retval = TRUE; /* We succeeded */
1374
1375 cleanup:
1376     SetTextColor(hdc, fg);
1377     SetBkColor(hdc, bg);
1378
1379     if(hbsave)  SelectObject(hdc, hbsave);
1380     if(hbmsave) SelectObject(memdc, hbmsave);
1381     if(hbrtmp)  DeleteObject(hbrtmp);
1382     if(hbm)     DeleteObject(hbm);
1383     if(memdc)   DeleteDC(memdc);
1384
1385     return retval;
1386 }
1387
1388 /**********************************************************************
1389  *              DrawStateA (USER32.@)
1390  */
1391 BOOL WINAPI DrawStateA(HDC hdc, HBRUSH hbr,
1392                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1393                    INT x, INT y, INT cx, INT cy, UINT flags)
1394 {
1395     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, FALSE);
1396 }
1397
1398 /**********************************************************************
1399  *              DrawStateW (USER32.@)
1400  */
1401 BOOL WINAPI DrawStateW(HDC hdc, HBRUSH hbr,
1402                    DRAWSTATEPROC func, LPARAM ldata, WPARAM wdata,
1403                    INT x, INT y, INT cx, INT cy, UINT flags)
1404 {
1405     return PAINTING_DrawState(hdc, hbr, func, ldata, wdata, x, y, cx, cy, flags, TRUE);
1406 }
1407
1408
1409 /**********************************************************************
1410  *           DrawState    (USER.449)
1411  */
1412 BOOL16 WINAPI DrawState16( HDC16 hdc, HBRUSH16 hbr, DRAWSTATEPROC16 func, LPARAM ldata,
1413                            WPARAM16 wdata, INT16 x, INT16 y, INT16 cx, INT16 cy, UINT16 flags )
1414 {
1415     struct draw_state_info info;
1416     UINT opcode = flags & 0xf;
1417
1418     if (opcode == DST_TEXT || opcode == DST_PREFIXTEXT)
1419     {
1420         /* make sure DrawStateA doesn't try to use ldata as a pointer */
1421         if (!wdata) wdata = strlen( MapSL(ldata) );
1422         if (!cx || !cy)
1423         {
1424             SIZE s;
1425             if (!GetTextExtentPoint32A( hdc, MapSL(ldata), wdata, &s )) return FALSE;
1426             if (!cx) cx = s.cx;
1427             if (!cy) cy = s.cy;
1428         }
1429     }
1430     info.proc  = func;
1431     info.param = ldata;
1432     return DrawStateA( hdc, hbr, draw_state_callback, (LPARAM)&info, wdata, x, y, cx, cy, flags );
1433 }
1434
1435
1436 /***********************************************************************
1437  *              SelectPalette (USER.282)
1438  */
1439 HPALETTE16 WINAPI SelectPalette16( HDC16 hDC, HPALETTE16 hPal,
1440                                    BOOL16 bForceBackground )
1441 {
1442     WORD wBkgPalette = 1;
1443
1444     if (!bForceBackground && (hPal != GetStockObject(DEFAULT_PALETTE)))
1445     {
1446         HWND hwnd = WindowFromDC( hDC );
1447         if (hwnd)
1448         {
1449             HWND hForeground = GetForegroundWindow();
1450             /* set primary palette if it's related to current active */
1451             if (hForeground == hwnd || IsChild(hForeground,hwnd)) wBkgPalette = 0;
1452         }
1453     }
1454     return GDISelectPalette16( hDC, hPal, wBkgPalette);
1455 }
1456
1457
1458 /***********************************************************************
1459  *              RealizePalette (USER.283)
1460  */
1461 UINT16 WINAPI RealizePalette16( HDC16 hDC )
1462 {
1463     UINT16 realized = GDIRealizePalette16( hDC );
1464
1465     /* do not send anything if no colors were changed */
1466     if (realized && IsDCCurrentPalette16( hDC ))
1467     {
1468         /* send palette change notification */
1469         HWND hWnd = WindowFromDC( hDC );
1470         if (hWnd) SendMessageA( HWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hWnd, 0L);
1471     }
1472     return realized;
1473 }
1474
1475
1476 /***********************************************************************
1477  *              UserRealizePalette (USER32.@)
1478  */
1479 UINT WINAPI UserRealizePalette( HDC hDC )
1480 {
1481     return RealizePalette16( hDC );
1482 }