objects/bitmap.c

   1 /*
   2  * GDI bitmap objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *           1998 Huw D M Davies
   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 <stdlib.h>
  23 #include <string.h>
  24
  25 #include "wine/winbase16.h"
  26 #include "gdi.h"
  27 #include "bitmap.h"
  28 #include "selectors.h"
  29 #include "wine/debug.h"
  30 #include "wine/winuser16.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(bitmap);
  33
  34
  35 /***********************************************************************
  36  *           BITMAP_GetWidthBytes
  37  *
  38  * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
  39  * data.
  40  */
  41 INT BITMAP_GetWidthBytes( INT bmWidth, INT bpp )
  42 {
  43     switch(bpp)
  44     {
  45     case 1:
  46         return 2 * ((bmWidth+15) >> 4);
  47
  48     case 24:
  49         bmWidth *= 3; /* fall through */
  50     case 8:
  51         return bmWidth + (bmWidth & 1);
  52
  53     case 32:
  54         return bmWidth * 4;
  55
  56     case 16:
  57     case 15:
  58         return bmWidth * 2;
  59
  60     case 4:
  61         return 2 * ((bmWidth+3) >> 2);
  62
  63     default:
  64         WARN("Unknown depth %d, please report.\n", bpp );
  65     }
  66     return -1;
  67 }
  68
  69 /***********************************************************************
  70  *           CreateUserBitmap    (GDI.407)
  71  */
  72 HBITMAP16 WINAPI CreateUserBitmap16( INT16 width, INT16 height, UINT16 planes,
  73                                      UINT16 bpp, LPCVOID bits )
  74 {
  75     return CreateBitmap16( width, height, planes, bpp, bits );
  76 }
  77
  78 /***********************************************************************
  79  *           CreateUserDiscardableBitmap    (GDI.409)
  80  */
  81 HBITMAP16 WINAPI CreateUserDiscardableBitmap16( WORD dummy,
  82                                                 INT16 width, INT16 height )
  83 {
  84     HDC hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
  85     HBITMAP16 ret = CreateCompatibleBitmap16( hdc, width, height );
  86     DeleteDC( hdc );
  87     return ret;
  88 }
  89
  90
  91 /***********************************************************************
  92  *           CreateBitmap    (GDI.48)
  93  */
  94 HBITMAP16 WINAPI CreateBitmap16( INT16 width, INT16 height, UINT16 planes,
  95                                  UINT16 bpp, LPCVOID bits )
  96 {
  97     return CreateBitmap( width, height, planes, bpp, bits );
  98 }
  99
 100
 101 /******************************************************************************
 102  * CreateBitmap [GDI32.@]  Creates a bitmap with the specified info
 103  *
 104  * PARAMS
 105  *    width  [I] bitmap width
 106  *    height [I] bitmap height
 107  *    planes [I] Number of color planes
 108  *    bpp    [I] Number of bits to identify a color
 109  *    bits   [I] Pointer to array containing color data
 110  *
 111  * RETURNS
 112  *    Success: Handle to bitmap
 113  *    Failure: 0
 114  */
 115 HBITMAP WINAPI CreateBitmap( INT width, INT height, UINT planes,
 116                                  UINT bpp, LPCVOID bits )
 117 {
 118     BITMAPOBJ *bmp;
 119     HBITMAP hbitmap;
 120
 121     planes = (BYTE)planes;
 122     bpp    = (BYTE)bpp;
 123
 124
 125       /* Check parameters */
 126     if (!height || !width)
 127     {
 128         height = 1;
 129         width  = 1;
 130         planes = 1;
 131         bpp    = 1;
 132     }
 133     if (planes != 1) {
 134         FIXME("planes = %d\n", planes);
 135         return 0;
 136     }
 137     if (height < 0) height = -height;
 138     if (width < 0) width = -width;
 139
 140       /* Create the BITMAPOBJ */
 141     if (!(bmp = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC, &hbitmap ))) return 0;
 142
 143     TRACE("%dx%d, %d colors returning %08x\n", width, height,
 144           1 << (planes*bpp), hbitmap);
 145
 146     bmp->size.cx = 0;
 147     bmp->size.cy = 0;
 148     bmp->bitmap.bmType = 0;
 149     bmp->bitmap.bmWidth = width;
 150     bmp->bitmap.bmHeight = height;
 151     bmp->bitmap.bmPlanes = planes;
 152     bmp->bitmap.bmBitsPixel = bpp;
 153     bmp->bitmap.bmWidthBytes = BITMAP_GetWidthBytes( width, bpp );
 154     bmp->bitmap.bmBits = NULL;
 155
 156     bmp->funcs = NULL;
 157     bmp->physBitmap = NULL;
 158     bmp->dib = NULL;
 159     bmp->segptr_bits = 0;
 160
 161     if (bits) /* Set bitmap bits */
 162         SetBitmapBits( hbitmap, height * bmp->bitmap.bmWidthBytes,
 163                          bits );
 164     GDI_ReleaseObj( hbitmap );
 165     return hbitmap;
 166 }
 167
 168
 169 /***********************************************************************
 170  *           CreateCompatibleBitmap    (GDI.51)
 171  */
 172 HBITMAP16 WINAPI CreateCompatibleBitmap16(HDC16 hdc, INT16 width, INT16 height)
 173 {
 174     return CreateCompatibleBitmap( hdc, width, height );
 175 }
 176
 177
 178 /******************************************************************************
 179  * CreateCompatibleBitmap [GDI32.@]  Creates a bitmap compatible with the DC
 180  *
 181  * PARAMS
 182  *    hdc    [I] Handle to device context
 183  *    width  [I] Width of bitmap
 184  *    height [I] Height of bitmap
 185  *
 186  * RETURNS
 187  *    Success: Handle to bitmap
 188  *    Failure: 0
 189  */
 190 HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
 191 {
 192     HBITMAP hbmpRet = 0;
 193     DC *dc;
 194
 195     TRACE("(%04x,%d,%d) = \n", hdc, width, height );
 196     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
 197     if ((width >= 0x10000) || (height >= 0x10000)) {
 198         FIXME("got bad width %d or height %d, please look for reason\n",
 199               width, height );
 200     } else {
 201         /* MS doc says if width or height is 0, return 1-by-1 pixel, monochrome bitmap */
 202         if (!width || !height)
 203            hbmpRet = CreateBitmap( 1, 1, 1, 1, NULL );
 204         else
 205            hbmpRet = CreateBitmap( width, height, 1, dc->bitsPerPixel, NULL );
 206         if(dc->funcs->pCreateBitmap)
 207             dc->funcs->pCreateBitmap( hbmpRet );
 208     }
 209     TRACE("\t\t%04x\n", hbmpRet);
 210     GDI_ReleaseObj(hdc);
 211     return hbmpRet;
 212 }
 213
 214
 215 /***********************************************************************
 216  *           CreateBitmapIndirect    (GDI.49)
 217  */
 218 HBITMAP16 WINAPI CreateBitmapIndirect16( const BITMAP16 * bmp )
 219 {
 220     return CreateBitmap16( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 221                            bmp->bmBitsPixel, MapSL( bmp->bmBits ) );
 222 }
 223
 224
 225 /******************************************************************************
 226  * CreateBitmapIndirect [GDI32.@]  Creates a bitmap with the specifies info
 227  *
 228  * RETURNS
 229  *    Success: Handle to bitmap
 230  *    Failure: NULL
 231  */
 232 HBITMAP WINAPI CreateBitmapIndirect(
 233     const BITMAP * bmp) /* [in] Pointer to the bitmap data */
 234 {
 235     return CreateBitmap( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 236                            bmp->bmBitsPixel, bmp->bmBits );
 237 }
 238
 239
 240 /***********************************************************************
 241  *           GetBitmapBits    (GDI.74)
 242  */
 243 LONG WINAPI GetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPVOID buffer )
 244 {
 245     return GetBitmapBits( hbitmap, count, buffer );
 246 }
 247
 248
 249 /***********************************************************************
 250  * GetBitmapBits [GDI32.@]  Copies bitmap bits of bitmap to buffer
 251  *
 252  * RETURNS
 253  *    Success: Number of bytes copied
 254  *    Failure: 0
 255  */
 256 LONG WINAPI GetBitmapBits(
 257     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 258     LONG count,        /* [in]  Number of bytes to copy */
 259     LPVOID bits)       /* [out] Pointer to buffer to receive bits */
 260 {
 261     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 262     LONG height, ret;
 263
 264     if (!bmp) return 0;
 265
 266     /* If the bits vector is null, the function should return the read size */
 267     if(bits == NULL)
 268     {
 269         ret = bmp->bitmap.bmWidthBytes * bmp->bitmap.bmHeight;
 270         goto done;
 271     }
 272
 273     if (count < 0) {
 274         WARN("(%ld): Negative number of bytes passed???\n", count );
 275         count = -count;
 276     }
 277
 278     /* Only get entire lines */
 279     height = count / bmp->bitmap.bmWidthBytes;
 280     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 281     count = height * bmp->bitmap.bmWidthBytes;
 282     if (count == 0)
 283       {
 284         WARN("Less than one entire line requested\n");
 285         ret = 0;
 286         goto done;
 287       }
 288
 289
 290     TRACE("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 291           hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 292           1 << bmp->bitmap.bmBitsPixel, height );
 293
 294     if(bmp->funcs) {
 295
 296         TRACE("Calling device specific BitmapBits\n");
 297         if(bmp->funcs->pBitmapBits)
 298             ret = bmp->funcs->pBitmapBits(hbitmap, bits, count, DDB_GET);
 299         else {
 300             ERR("BitmapBits == NULL??\n");
 301             ret = 0;
 302         }
 303
 304     } else {
 305
 306         if(!bmp->bitmap.bmBits) {
 307             WARN("Bitmap is empty\n");
 308             ret = 0;
 309         } else {
 310             memcpy(bits, bmp->bitmap.bmBits, count);
 311             ret = count;
 312         }
 313
 314     }
 315  done:
 316     GDI_ReleaseObj( hbitmap );
 317     return ret;
 318 }
 319
 320
 321 /***********************************************************************
 322  *           SetBitmapBits    (GDI.106)
 323  */
 324 LONG WINAPI SetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPCVOID buffer )
 325 {
 326     return SetBitmapBits( hbitmap, count, buffer );
 327 }
 328
 329
 330 /******************************************************************************
 331  * SetBitmapBits [GDI32.@]  Sets bits of color data for a bitmap
 332  *
 333  * RETURNS
 334  *    Success: Number of bytes used in setting the bitmap bits
 335  *    Failure: 0
 336  */
 337 LONG WINAPI SetBitmapBits(
 338     HBITMAP hbitmap, /* [in] Handle to bitmap */
 339     LONG count,        /* [in] Number of bytes in bitmap array */
 340     LPCVOID bits)      /* [in] Address of array with bitmap bits */
 341 {
 342     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 343     LONG height, ret;
 344
 345     if ((!bmp) || (!bits))
 346         return 0;
 347
 348     if (count < 0) {
 349         WARN("(%ld): Negative number of bytes passed???\n", count );
 350         count = -count;
 351     }
 352
 353     /* Only get entire lines */
 354     height = count / bmp->bitmap.bmWidthBytes;
 355     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 356     count = height * bmp->bitmap.bmWidthBytes;
 357
 358     TRACE("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 359           hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 360           1 << bmp->bitmap.bmBitsPixel, height );
 361
 362     if(bmp->funcs) {
 363
 364         TRACE("Calling device specific BitmapBits\n");
 365         if(bmp->funcs->pBitmapBits)
 366             ret = bmp->funcs->pBitmapBits(hbitmap, (void *) bits, count, DDB_SET);
 367         else {
 368             ERR("BitmapBits == NULL??\n");
 369             ret = 0;
 370         }
 371
 372     } else {
 373
 374         if(!bmp->bitmap.bmBits) /* Alloc enough for entire bitmap */
 375             bmp->bitmap.bmBits = HeapAlloc( GetProcessHeap(), 0, count );
 376         if(!bmp->bitmap.bmBits) {
 377             WARN("Unable to allocate bit buffer\n");
 378             ret = 0;
 379         } else {
 380             memcpy(bmp->bitmap.bmBits, bits, count);
 381             ret = count;
 382         }
 383     }
 384
 385     GDI_ReleaseObj( hbitmap );
 386     return ret;
 387 }
 388
 389 /**********************************************************************
 390  *              BITMAP_CopyBitmap
 391  *
 392  */
 393 HBITMAP BITMAP_CopyBitmap(HBITMAP hbitmap)
 394 {
 395     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 396     HBITMAP res = 0;
 397     BITMAP bm;
 398
 399     if(!bmp) return 0;
 400
 401     bm = bmp->bitmap;
 402     bm.bmBits = NULL;
 403     res = CreateBitmapIndirect(&bm);
 404
 405     if(res) {
 406         char *buf = HeapAlloc( GetProcessHeap(), 0, bm.bmWidthBytes *
 407                                bm.bmHeight );
 408         GetBitmapBits (hbitmap, bm.bmWidthBytes * bm.bmHeight, buf);
 409         SetBitmapBits (res, bm.bmWidthBytes * bm.bmHeight, buf);
 410         HeapFree( GetProcessHeap(), 0, buf );
 411     }
 412
 413     GDI_ReleaseObj( hbitmap );
 414     return res;
 415 }
 416
 417 /***********************************************************************
 418  *           BITMAP_DeleteObject
 419  */
 420 BOOL BITMAP_DeleteObject( HBITMAP16 hbitmap, BITMAPOBJ * bmp )
 421 {
 422     if (bmp->funcs && bmp->funcs->pDeleteObject)
 423         bmp->funcs->pDeleteObject( hbitmap );
 424
 425     if( bmp->bitmap.bmBits )
 426         HeapFree( GetProcessHeap(), 0, bmp->bitmap.bmBits );
 427
 428     if (bmp->dib)
 429     {
 430         DIBSECTION *dib = bmp->dib;
 431
 432         if (dib->dsBm.bmBits)
 433         {
 434             if (dib->dshSection)
 435             {
 436                 SYSTEM_INFO SystemInfo;
 437                 GetSystemInfo( &SystemInfo );
 438                 UnmapViewOfFile( (char *)dib->dsBm.bmBits -
 439                                  (dib->dsOffset % SystemInfo.dwAllocationGranularity) );
 440             }
 441             else if (!dib->dsOffset)
 442                 VirtualFree(dib->dsBm.bmBits, 0L, MEM_RELEASE );
 443         }
 444         HeapFree(GetProcessHeap(), 0, dib);
 445         bmp->dib = NULL;
 446         if (bmp->segptr_bits)
 447         { /* free its selector array */
 448             WORD sel = SELECTOROF(bmp->segptr_bits);
 449             WORD count = (GetSelectorLimit16(sel) / 0x10000) + 1;
 450             int i;
 451
 452             for (i = 0; i < count; i++) FreeSelector16(sel + (i << __AHSHIFT));
 453         }
 454     }
 455     return GDI_FreeObject( hbitmap, bmp );
 456 }
 457
 458
 459 /***********************************************************************
 460  *           BITMAP_GetObject16
 461  */
 462 INT16 BITMAP_GetObject16( BITMAPOBJ * bmp, INT16 count, LPVOID buffer )
 463 {
 464     if (bmp->dib)
 465     {
 466         if ( count <= sizeof(BITMAP16) )
 467         {
 468             BITMAP *bmp32 = &bmp->dib->dsBm;
 469             BITMAP16 bmp16;
 470             bmp16.bmType       = bmp32->bmType;
 471             bmp16.bmWidth      = bmp32->bmWidth;
 472             bmp16.bmHeight     = bmp32->bmHeight;
 473             bmp16.bmWidthBytes = bmp32->bmWidthBytes;
 474             bmp16.bmPlanes     = bmp32->bmPlanes;
 475             bmp16.bmBitsPixel  = bmp32->bmBitsPixel;
 476             bmp16.bmBits       = (SEGPTR)0;
 477             memcpy( buffer, &bmp16, count );
 478             return count;
 479         }
 480         else
 481         {
 482             FIXME("not implemented for DIBs: count %d\n", count);
 483             return 0;
 484         }
 485     }
 486     else
 487     {
 488         BITMAP16 bmp16;
 489         bmp16.bmType       = bmp->bitmap.bmType;
 490         bmp16.bmWidth      = bmp->bitmap.bmWidth;
 491         bmp16.bmHeight     = bmp->bitmap.bmHeight;
 492         bmp16.bmWidthBytes = bmp->bitmap.bmWidthBytes;
 493         bmp16.bmPlanes     = bmp->bitmap.bmPlanes;
 494         bmp16.bmBitsPixel  = bmp->bitmap.bmBitsPixel;
 495         bmp16.bmBits       = (SEGPTR)0;
 496         if (count > sizeof(bmp16)) count = sizeof(bmp16);
 497         memcpy( buffer, &bmp16, count );
 498         return count;
 499     }
 500 }
 501
 502
 503 /***********************************************************************
 504  *           BITMAP_GetObject
 505  */
 506 INT BITMAP_GetObject( BITMAPOBJ * bmp, INT count, LPVOID buffer )
 507 {
 508     if (bmp->dib)
 509     {
 510         if (count < sizeof(DIBSECTION))
 511         {
 512             if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 513         }
 514         else
 515         {
 516             if (count > sizeof(DIBSECTION)) count = sizeof(DIBSECTION);
 517         }
 518
 519         memcpy( buffer, bmp->dib, count );
 520         return count;
 521     }
 522     else
 523     {
 524         if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 525         memcpy( buffer, &bmp->bitmap, count );
 526         return count;
 527     }
 528 }
 529
 530
 531 /***********************************************************************
 532  *           CreateDiscardableBitmap    (GDI.156)
 533  */
 534 HBITMAP16 WINAPI CreateDiscardableBitmap16( HDC16 hdc, INT16 width,
 535                                             INT16 height )
 536 {
 537     return CreateCompatibleBitmap16( hdc, width, height );
 538 }
 539
 540
 541 /******************************************************************************
 542  * CreateDiscardableBitmap [GDI32.@]  Creates a discardable bitmap
 543  *
 544  * RETURNS
 545  *    Success: Handle to bitmap
 546  *    Failure: NULL
 547  */
 548 HBITMAP WINAPI CreateDiscardableBitmap(
 549     HDC hdc,    /* [in] Handle to device context */
 550     INT width,  /* [in] Bitmap width */
 551     INT height) /* [in] Bitmap height */
 552 {
 553     return CreateCompatibleBitmap( hdc, width, height );
 554 }
 555
 556
 557 /***********************************************************************
 558  *           GetBitmapDimensionEx    (GDI.468)
 559  *
 560  * NOTES
 561  *    Can this call GetBitmapDimensionEx?
 562  */
 563 BOOL16 WINAPI GetBitmapDimensionEx16( HBITMAP16 hbitmap, LPSIZE16 size )
 564 {
 565     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 566     if (!bmp) return FALSE;
 567     size->cx = bmp->size.cx;
 568     size->cy = bmp->size.cy;
 569     GDI_ReleaseObj( hbitmap );
 570     return TRUE;
 571 }
 572
 573
 574 /******************************************************************************
 575  * GetBitmapDimensionEx [GDI32.@]  Retrieves dimensions of a bitmap
 576  *
 577  * RETURNS
 578  *    Success: TRUE
 579  *    Failure: FALSE
 580  */
 581 BOOL WINAPI GetBitmapDimensionEx(
 582     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 583     LPSIZE size)     /* [out] Address of struct receiving dimensions */
 584 {
 585     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 586     if (!bmp) return FALSE;
 587     *size = bmp->size;
 588     GDI_ReleaseObj( hbitmap );
 589     return TRUE;
 590 }
 591
 592
 593 /***********************************************************************
 594  *           GetBitmapDimension    (GDI.162)
 595  */
 596 DWORD WINAPI GetBitmapDimension16( HBITMAP16 hbitmap )
 597 {
 598     SIZE16 size;
 599     if (!GetBitmapDimensionEx16( hbitmap, &size )) return 0;
 600     return MAKELONG( size.cx, size.cy );
 601 }
 602
 603
 604 /***********************************************************************
 605  *           SetBitmapDimensionEx    (GDI.478)
 606  */
 607 BOOL16 WINAPI SetBitmapDimensionEx16( HBITMAP16 hbitmap, INT16 x, INT16 y,
 608                                       LPSIZE16 prevSize )
 609 {
 610     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 611     if (!bmp) return FALSE;
 612     if (prevSize)
 613     {
 614         prevSize->cx = bmp->size.cx;
 615         prevSize->cy = bmp->size.cy;
 616     }
 617     bmp->size.cx = x;
 618     bmp->size.cy = y;
 619     GDI_ReleaseObj( hbitmap );
 620     return TRUE;
 621 }
 622
 623
 624 /******************************************************************************
 625  * SetBitmapDimensionEx [GDI32.@]  Assignes dimensions to a bitmap
 626  *
 627  * RETURNS
 628  *    Success: TRUE
 629  *    Failure: FALSE
 630  */
 631 BOOL WINAPI SetBitmapDimensionEx(
 632     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 633     INT x,           /* [in]  Bitmap width */
 634     INT y,           /* [in]  Bitmap height */
 635     LPSIZE prevSize) /* [out] Address of structure for orig dims */
 636 {
 637     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 638     if (!bmp) return FALSE;
 639     if (prevSize) *prevSize = bmp->size;
 640     bmp->size.cx = x;
 641     bmp->size.cy = y;
 642     GDI_ReleaseObj( hbitmap );
 643     return TRUE;
 644 }
 645
 646
 647 /***********************************************************************
 648  *           SetBitmapDimension    (GDI.163)
 649  */
 650 DWORD WINAPI SetBitmapDimension16( HBITMAP16 hbitmap, INT16 x, INT16 y )
 651 {
 652     SIZE16 size;
 653     if (!SetBitmapDimensionEx16( hbitmap, x, y, &size )) return 0;
 654     return MAKELONG( size.cx, size.cy );
 655 }
 656