objects/bitmap.c

   1 /*
   2  * GDI bitmap objects
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *           1998 Huw D M Davies
   6  */
   7
   8 #include <stdlib.h>
   9 #include <string.h>
  10
  11 #include "wine/winbase16.h"
  12 #include "gdi.h"
  13 #include "dc.h"
  14 #include "bitmap.h"
  15 #include "heap.h"
  16 #include "global.h"
  17 #include "cursoricon.h"
  18 #include "debugtools.h"
  19 #include "monitor.h"
  20 #include "wine/winuser16.h"
  21
  22 DECLARE_DEBUG_CHANNEL(bitmap)
  23 DECLARE_DEBUG_CHANNEL(resource)
  24
  25 BITMAP_DRIVER *BITMAP_Driver = NULL;
  26
  27
  28 /***********************************************************************
  29  *           BITMAP_GetWidthBytes
  30  *
  31  * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
  32  * data.
  33  */
  34 INT BITMAP_GetWidthBytes( INT bmWidth, INT bpp )
  35 {
  36     switch(bpp)
  37     {
  38     case 1:
  39         return 2 * ((bmWidth+15) >> 4);
  40
  41     case 24:
  42         bmWidth *= 3; /* fall through */
  43     case 8:
  44         return bmWidth + (bmWidth & 1);
  45
  46     case 32:
  47         return bmWidth * 4;
  48
  49     case 16:
  50     case 15:
  51         return bmWidth * 2;
  52
  53     case 4:
  54         return 2 * ((bmWidth+3) >> 2);
  55
  56     default:
  57         WARN_(bitmap)("Unknown depth %d, please report.\n", bpp );
  58     }
  59     return -1;
  60 }
  61
  62 /***********************************************************************
  63  *           CreateUserBitmap16    (GDI.407)
  64  */
  65 HBITMAP16 WINAPI CreateUserBitmap16( INT16 width, INT16 height, UINT16 planes,
  66                                      UINT16 bpp, LPCVOID bits )
  67 {
  68     return CreateBitmap16( width, height, planes, bpp, bits );
  69 }
  70
  71 /***********************************************************************
  72  *           CreateUserDiscardableBitmap16    (GDI.409)
  73  */
  74 HBITMAP16 WINAPI CreateUserDiscardableBitmap16( WORD dummy,
  75                                                 INT16 width, INT16 height )
  76 {
  77     return CreateUserBitmap16( width, height, 1, MONITOR_GetDepth(&MONITOR_PrimaryMonitor), NULL );
  78 }
  79
  80
  81 /***********************************************************************
  82  *           CreateBitmap16    (GDI.48)
  83  */
  84 HBITMAP16 WINAPI CreateBitmap16( INT16 width, INT16 height, UINT16 planes,
  85                                  UINT16 bpp, LPCVOID bits )
  86 {
  87     return CreateBitmap( width, height, planes, bpp, bits );
  88 }
  89
  90
  91 /******************************************************************************
  92  * CreateBitmap32 [GDI32.25]  Creates a bitmap with the specified info
  93  *
  94  * PARAMS
  95  *    width  [I] bitmap width
  96  *    height [I] bitmap height
  97  *    planes [I] Number of color planes
  98  *    bpp    [I] Number of bits to identify a color
  99  *    bits   [I] Pointer to array containing color data
 100  *
 101  * RETURNS
 102  *    Success: Handle to bitmap
 103  *    Failure: 0
 104  */
 105 HBITMAP WINAPI CreateBitmap( INT width, INT height, UINT planes,
 106                                  UINT bpp, LPCVOID bits )
 107 {
 108     BITMAPOBJ *bmp;
 109     HBITMAP hbitmap;
 110
 111     planes = (BYTE)planes;
 112     bpp    = (BYTE)bpp;
 113
 114
 115       /* Check parameters */
 116     if (!height || !width) return 0;
 117     if (planes != 1) {
 118         FIXME_(bitmap)("planes = %d\n", planes);
 119         return 0;
 120     }
 121     if (height < 0) height = -height;
 122     if (width < 0) width = -width;
 123
 124       /* Create the BITMAPOBJ */
 125     hbitmap = GDI_AllocObject( sizeof(BITMAPOBJ), BITMAP_MAGIC );
 126     if (!hbitmap) return 0;
 127
 128     TRACE_(bitmap)("%dx%d, %d colors returning %08x\n", width, height,
 129           1 << (planes*bpp), hbitmap);
 130
 131     bmp = (BITMAPOBJ *) GDI_HEAP_LOCK( hbitmap );
 132
 133     bmp->size.cx = 0;
 134     bmp->size.cy = 0;
 135     bmp->bitmap.bmType = 0;
 136     bmp->bitmap.bmWidth = width;
 137     bmp->bitmap.bmHeight = height;
 138     bmp->bitmap.bmPlanes = planes;
 139     bmp->bitmap.bmBitsPixel = bpp;
 140     bmp->bitmap.bmWidthBytes = BITMAP_GetWidthBytes( width, bpp );
 141     bmp->bitmap.bmBits = NULL;
 142
 143     bmp->DDBitmap = NULL;
 144     bmp->dib = NULL;
 145
 146     if (bits) /* Set bitmap bits */
 147         SetBitmapBits( hbitmap, height * bmp->bitmap.bmWidthBytes,
 148                          bits );
 149     GDI_HEAP_UNLOCK( hbitmap );
 150     return hbitmap;
 151 }
 152
 153
 154 /***********************************************************************
 155  *           CreateCompatibleBitmap16    (GDI.51)
 156  */
 157 HBITMAP16 WINAPI CreateCompatibleBitmap16(HDC16 hdc, INT16 width, INT16 height)
 158 {
 159     return CreateCompatibleBitmap( hdc, width, height );
 160 }
 161
 162
 163 /******************************************************************************
 164  * CreateCompatibleBitmap32 [GDI32.30]  Creates a bitmap compatible with the DC
 165  *
 166  * PARAMS
 167  *    hdc    [I] Handle to device context
 168  *    width  [I] Width of bitmap
 169  *    height [I] Height of bitmap
 170  *
 171  * RETURNS
 172  *    Success: Handle to bitmap
 173  *    Failure: 0
 174  */
 175 HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
 176 {
 177     HBITMAP hbmpRet = 0;
 178     DC *dc;
 179
 180     TRACE_(bitmap)("(%04x,%d,%d) = \n", hdc, width, height );
 181     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
 182     if ((width >= 0x10000) || (height >= 0x10000)) {
 183         FIXME_(bitmap)("got bad width %d or height %d, please look for reason\n",
 184               width, height );
 185     } else {
 186         /* MS doc says if width or height is 0, return 1-by-1 pixel, monochrome bitmap */
 187         if (!width || !height)
 188            hbmpRet = CreateBitmap( 1, 1, 1, 1, NULL );
 189         else
 190            hbmpRet = CreateBitmap( width, height, 1, dc->w.bitsPerPixel, NULL );
 191         if(dc->funcs->pCreateBitmap)
 192             dc->funcs->pCreateBitmap( hbmpRet );
 193     }
 194     TRACE_(bitmap)("\t\t%04x\n", hbmpRet);
 195     GDI_HEAP_UNLOCK(hdc);
 196     return hbmpRet;
 197 }
 198
 199
 200 /***********************************************************************
 201  *           CreateBitmapIndirect16    (GDI.49)
 202  */
 203 HBITMAP16 WINAPI CreateBitmapIndirect16( const BITMAP16 * bmp )
 204 {
 205     return CreateBitmap16( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 206                            bmp->bmBitsPixel, PTR_SEG_TO_LIN( bmp->bmBits ) );
 207 }
 208
 209
 210 /******************************************************************************
 211  * CreateBitmapIndirect32 [GDI32.26]  Creates a bitmap with the specifies info
 212  *
 213  * RETURNS
 214  *    Success: Handle to bitmap
 215  *    Failure: NULL
 216  */
 217 HBITMAP WINAPI CreateBitmapIndirect(
 218     const BITMAP * bmp) /* [in] Pointer to the bitmap data */
 219 {
 220     return CreateBitmap( bmp->bmWidth, bmp->bmHeight, bmp->bmPlanes,
 221                            bmp->bmBitsPixel, bmp->bmBits );
 222 }
 223
 224
 225 /***********************************************************************
 226  *           GetBitmapBits16    (GDI.74)
 227  */
 228 LONG WINAPI GetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPVOID buffer )
 229 {
 230     return GetBitmapBits( hbitmap, count, buffer );
 231 }
 232
 233
 234 /***********************************************************************
 235  * GetBitmapBits32 [GDI32.143]  Copies bitmap bits of bitmap to buffer
 236  *
 237  * RETURNS
 238  *    Success: Number of bytes copied
 239  *    Failure: 0
 240  */
 241 LONG WINAPI GetBitmapBits(
 242     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 243     LONG count,        /* [in]  Number of bytes to copy */
 244     LPVOID bits)       /* [out] Pointer to buffer to receive bits */
 245 {
 246     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 247     LONG height, ret;
 248
 249     if (!bmp) return 0;
 250
 251     /* If the bits vector is null, the function should return the read size */
 252     if(bits == NULL)
 253         return bmp->bitmap.bmWidthBytes * bmp->bitmap.bmHeight;
 254
 255     if (count < 0) {
 256         WARN_(bitmap)("(%ld): Negative number of bytes passed???\n", count );
 257         count = -count;
 258     }
 259
 260     /* Only get entire lines */
 261     height = count / bmp->bitmap.bmWidthBytes;
 262     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 263     count = height * bmp->bitmap.bmWidthBytes;
 264     if (count == 0)
 265       {
 266         WARN_(bitmap)("Less then one entire line requested\n");
 267         GDI_HEAP_UNLOCK( hbitmap );
 268         return 0;
 269       }
 270
 271
 272     TRACE_(bitmap)("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 273             hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 274             1 << bmp->bitmap.bmBitsPixel, height );
 275
 276     if(bmp->DDBitmap) {
 277
 278         TRACE_(bitmap)("Calling device specific BitmapBits\n");
 279         if(bmp->DDBitmap->funcs->pBitmapBits)
 280             ret = bmp->DDBitmap->funcs->pBitmapBits(hbitmap, bits, count,
 281                                                     DDB_GET);
 282         else {
 283             ERR_(bitmap)("BitmapBits == NULL??\n");
 284             ret = 0;
 285         }
 286
 287     } else {
 288
 289         if(!bmp->bitmap.bmBits) {
 290             WARN_(bitmap)("Bitmap is empty\n");
 291             ret = 0;
 292         } else {
 293             memcpy(bits, bmp->bitmap.bmBits, count);
 294             ret = count;
 295         }
 296
 297     }
 298
 299     GDI_HEAP_UNLOCK( hbitmap );
 300     return ret;
 301 }
 302
 303
 304 /***********************************************************************
 305  *           SetBitmapBits16    (GDI.106)
 306  */
 307 LONG WINAPI SetBitmapBits16( HBITMAP16 hbitmap, LONG count, LPCVOID buffer )
 308 {
 309     return SetBitmapBits( hbitmap, count, buffer );
 310 }
 311
 312
 313 /******************************************************************************
 314  * SetBitmapBits32 [GDI32.303]  Sets bits of color data for a bitmap
 315  *
 316  * RETURNS
 317  *    Success: Number of bytes used in setting the bitmap bits
 318  *    Failure: 0
 319  */
 320 LONG WINAPI SetBitmapBits(
 321     HBITMAP hbitmap, /* [in] Handle to bitmap */
 322     LONG count,        /* [in] Number of bytes in bitmap array */
 323     LPCVOID bits)      /* [in] Address of array with bitmap bits */
 324 {
 325     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 326     LONG height, ret;
 327
 328     if ((!bmp) || (!bits))
 329         return 0;
 330
 331     if (count < 0) {
 332         WARN_(bitmap)("(%ld): Negative number of bytes passed???\n", count );
 333         count = -count;
 334     }
 335
 336     /* Only get entire lines */
 337     height = count / bmp->bitmap.bmWidthBytes;
 338     if (height > bmp->bitmap.bmHeight) height = bmp->bitmap.bmHeight;
 339     count = height * bmp->bitmap.bmWidthBytes;
 340
 341     TRACE_(bitmap)("(%08x, %ld, %p) %dx%d %d colors fetched height: %ld\n",
 342             hbitmap, count, bits, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
 343             1 << bmp->bitmap.bmBitsPixel, height );
 344
 345     if(bmp->DDBitmap) {
 346
 347         TRACE_(bitmap)("Calling device specific BitmapBits\n");
 348         if(bmp->DDBitmap->funcs->pBitmapBits)
 349             ret = bmp->DDBitmap->funcs->pBitmapBits(hbitmap, (void *) bits,
 350                                                     count, DDB_SET);
 351         else {
 352             ERR_(bitmap)("BitmapBits == NULL??\n");
 353             ret = 0;
 354         }
 355
 356     } else {
 357
 358         if(!bmp->bitmap.bmBits) /* Alloc enough for entire bitmap */
 359             bmp->bitmap.bmBits = HeapAlloc( GetProcessHeap(), 0, count );
 360         if(!bmp->bitmap.bmBits) {
 361             WARN_(bitmap)("Unable to allocate bit buffer\n");
 362             ret = 0;
 363         } else {
 364             memcpy(bmp->bitmap.bmBits, bits, count);
 365             ret = count;
 366         }
 367     }
 368
 369     GDI_HEAP_UNLOCK( hbitmap );
 370     return ret;
 371 }
 372
 373 /***********************************************************************
 374  * LoadImage16 [USER.389]
 375  *
 376  */
 377 HANDLE16 WINAPI LoadImage16( HINSTANCE16 hinst, LPCSTR name, UINT16 type,
 378                              INT16 desiredx, INT16 desiredy, UINT16 loadflags)
 379 {
 380     LPCSTR nameStr = HIWORD(name)? PTR_SEG_TO_LIN(name) : (LPCSTR)name;
 381     return LoadImageA( hinst, nameStr, type,
 382                        desiredx, desiredy, loadflags );
 383 }
 384
 385 /**********************************************************************
 386  *          LoadImageA    (USER32.365)
 387  *
 388  * FIXME: implementation lacks some features, see LR_ defines in windows.h
 389  */
 390
 391 HANDLE WINAPI LoadImageA( HINSTANCE hinst, LPCSTR name, UINT type,
 392                               INT desiredx, INT desiredy, UINT loadflags)
 393 {
 394     HANDLE res;
 395     LPWSTR u_name;
 396
 397     if (HIWORD(name)) u_name = HEAP_strdupAtoW(GetProcessHeap(), 0, name);
 398     else u_name=(LPWSTR)name;
 399     res = LoadImageW(hinst, u_name, type, desiredx, desiredy, loadflags);
 400     if (HIWORD(name)) HeapFree(GetProcessHeap(), 0, u_name);
 401     return res;
 402 }
 403
 404
 405 /******************************************************************************
 406  * LoadImageW [USER32.366]  Loads an icon, cursor, or bitmap
 407  *
 408  * PARAMS
 409  *    hinst     [I] Handle of instance that contains image
 410  *    name      [I] Name of image
 411  *    type      [I] Type of image
 412  *    desiredx  [I] Desired width
 413  *    desiredy  [I] Desired height
 414  *    loadflags [I] Load flags
 415  *
 416  * RETURNS
 417  *    Success: Handle to newly loaded image
 418  *    Failure: NULL
 419  *
 420  * FIXME: Implementation lacks some features, see LR_ defines in windows.h
 421  */
 422 HANDLE WINAPI LoadImageW( HINSTANCE hinst, LPCWSTR name, UINT type,
 423                 INT desiredx, INT desiredy, UINT loadflags )
 424 {
 425     if (HIWORD(name)) {
 426         TRACE_(resource)("(0x%04x,%p,%d,%d,%d,0x%08x)\n",
 427               hinst,name,type,desiredx,desiredy,loadflags);
 428     } else {
 429         TRACE_(resource)("(0x%04x,%p,%d,%d,%d,0x%08x)\n",
 430               hinst,name,type,desiredx,desiredy,loadflags);
 431     }
 432     if (loadflags & LR_DEFAULTSIZE) {
 433         if (type == IMAGE_ICON) {
 434             if (!desiredx) desiredx = GetSystemMetrics(SM_CXICON);
 435             if (!desiredy) desiredy = GetSystemMetrics(SM_CYICON);
 436         } else if (type == IMAGE_CURSOR) {
 437             if (!desiredx) desiredx = GetSystemMetrics(SM_CXCURSOR);
 438             if (!desiredy) desiredy = GetSystemMetrics(SM_CYCURSOR);
 439         }
 440     }
 441     if (loadflags & LR_LOADFROMFILE) loadflags &= ~LR_SHARED;
 442     switch (type) {
 443     case IMAGE_BITMAP:
 444         return BITMAP_Load( hinst, name, loadflags );
 445
 446     case IMAGE_ICON:
 447         {
 448         HDC hdc = GetDC(0);
 449         UINT palEnts = GetSystemPaletteEntries(hdc, 0, 0, NULL);
 450         if (palEnts == 0)
 451             palEnts = 256;
 452         ReleaseDC(0, hdc);
 453
 454         return CURSORICON_Load(hinst, name, desiredx, desiredy,
 455                                  palEnts, FALSE, loadflags);
 456         }
 457
 458     case IMAGE_CURSOR:
 459         return CURSORICON_Load(hinst, name, desiredx, desiredy,
 460                                  1, TRUE, loadflags);
 461     }
 462     return 0;
 463 }
 464
 465
 466 /**********************************************************************
 467  *              BITMAP_CopyBitmap
 468  *
 469  */
 470 HBITMAP BITMAP_CopyBitmap(HBITMAP hbitmap)
 471 {
 472     BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 473     HBITMAP res = 0;
 474     BITMAP bm;
 475
 476     if(!bmp) return 0;
 477
 478     bm = bmp->bitmap;
 479     bm.bmBits = NULL;
 480     res = CreateBitmapIndirect(&bm);
 481
 482     if(res) {
 483         char *buf = HeapAlloc( GetProcessHeap(), 0, bm.bmWidthBytes *
 484                                bm.bmHeight );
 485         GetBitmapBits (hbitmap, bm.bmWidthBytes * bm.bmHeight, buf);
 486         SetBitmapBits (res, bm.bmWidthBytes * bm.bmHeight, buf);
 487         HeapFree( GetProcessHeap(), 0, buf );
 488     }
 489
 490     GDI_HEAP_UNLOCK( hbitmap );
 491     return res;
 492 }
 493
 494 /******************************************************************************
 495  * CopyImage16 [USER.390]  Creates new image and copies attributes to it
 496  *
 497  */
 498 HICON16 WINAPI CopyImage16( HANDLE16 hnd, UINT16 type, INT16 desiredx,
 499                              INT16 desiredy, UINT16 flags )
 500 {
 501     return (HICON16)CopyImage((HANDLE)hnd, (UINT)type, (INT)desiredx,
 502                                 (INT)desiredy, (UINT)flags);
 503 }
 504
 505 /******************************************************************************
 506  * CopyImage32 [USER32.61]  Creates new image and copies attributes to it
 507  *
 508  * PARAMS
 509  *    hnd      [I] Handle to image to copy
 510  *    type     [I] Type of image to copy
 511  *    desiredx [I] Desired width of new image
 512  *    desiredy [I] Desired height of new image
 513  *    flags    [I] Copy flags
 514  *
 515  * RETURNS
 516  *    Success: Handle to newly created image
 517  *    Failure: NULL
 518  *
 519  * FIXME: implementation still lacks nearly all features, see LR_*
 520  * defines in windows.h
 521  */
 522 HICON WINAPI CopyImage( HANDLE hnd, UINT type, INT desiredx,
 523                              INT desiredy, UINT flags )
 524 {
 525     switch (type)
 526     {
 527         case IMAGE_BITMAP:
 528                 return BITMAP_CopyBitmap(hnd);
 529         case IMAGE_ICON:
 530                 return CURSORICON_ExtCopy(hnd,type, desiredx, desiredy, flags);
 531         case IMAGE_CURSOR:
 532                 /* Should call CURSORICON_ExtCopy but more testing
 533                  * needs to be done before we change this
 534                  */
 535                 return CopyCursor(hnd);
 536     }
 537     return 0;
 538 }
 539
 540 /**********************************************************************
 541  *       BITMAP_Load
 542  */
 543 HBITMAP BITMAP_Load( HINSTANCE instance,LPCWSTR name, UINT loadflags )
 544 {
 545     HBITMAP hbitmap = 0;
 546     HDC hdc;
 547     HRSRC hRsrc;
 548     HGLOBAL handle;
 549     char *ptr = NULL;
 550     BITMAPINFO *info, *fix_info=NULL;
 551     HGLOBAL hFix;
 552     int size;
 553
 554     if (!(loadflags & LR_LOADFROMFILE)) {
 555       if (!instance)  /* OEM bitmap */
 556       {
 557           HDC hdc;
 558           DC *dc;
 559
 560           if (HIWORD((int)name)) return 0;
 561           hdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
 562           dc = DC_GetDCPtr( hdc );
 563           if(dc->funcs->pLoadOEMResource)
 564               hbitmap = dc->funcs->pLoadOEMResource( LOWORD((int)name),
 565                                                      OEM_BITMAP );
 566           GDI_HEAP_UNLOCK( hdc );
 567           DeleteDC( hdc );
 568           return hbitmap;
 569       }
 570
 571       if (!(hRsrc = FindResourceW( instance, name, RT_BITMAPW ))) return 0;
 572       if (!(handle = LoadResource( instance, hRsrc ))) return 0;
 573
 574       if ((info = (BITMAPINFO *)LockResource( handle )) == NULL) return 0;
 575     }
 576     else
 577     {
 578         if (!(ptr = (char *)VIRTUAL_MapFileW( name ))) return 0;
 579         info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
 580     }
 581     size = DIB_BitmapInfoSize(info, DIB_RGB_COLORS);
 582     if ((hFix = GlobalAlloc(0, size))) fix_info=GlobalLock(hFix);
 583     if (fix_info) {
 584       BYTE pix;
 585
 586       memcpy(fix_info, info, size);
 587       pix = *((LPBYTE)info+DIB_BitmapInfoSize(info, DIB_RGB_COLORS));
 588       DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
 589       if ((hdc = GetDC(0)) != 0) {
 590         char *bits = (char *)info + size;
 591         if (loadflags & LR_CREATEDIBSECTION) {
 592           DIBSECTION dib;
 593           hbitmap = CreateDIBSection(hdc, fix_info, DIB_RGB_COLORS, NULL, 0, 0);
 594           GetObjectA(hbitmap, sizeof(DIBSECTION), &dib);
 595           SetDIBits(hdc, hbitmap, 0, dib.dsBm.bmHeight, bits, info,
 596                     DIB_RGB_COLORS);
 597         }
 598         else {
 599           hbitmap = CreateDIBitmap( hdc, &fix_info->bmiHeader, CBM_INIT,
 600                                       bits, fix_info, DIB_RGB_COLORS );
 601         }
 602         ReleaseDC( 0, hdc );
 603       }
 604       GlobalUnlock(hFix);
 605       GlobalFree(hFix);
 606     }
 607     if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
 608     return hbitmap;
 609 }
 610
 611
 612 /******************************************************************************
 613  * LoadBitmapW [USER32.358]  Loads bitmap from the executable file
 614  *
 615  * RETURNS
 616  *    Success: Handle to specified bitmap
 617  *    Failure: NULL
 618  */
 619 HBITMAP WINAPI LoadBitmapW(
 620     HINSTANCE instance, /* [in] Handle to application instance */
 621     LPCWSTR name)         /* [in] Address of bitmap resource name */
 622 {
 623     return LoadImageW( instance, name, IMAGE_BITMAP, 0, 0, 0 );
 624 }
 625
 626 /**********************************************************************
 627  *          LoadBitmapA   (USER32.357)
 628  */
 629 HBITMAP WINAPI LoadBitmapA( HINSTANCE instance, LPCSTR name )
 630 {
 631     return LoadImageA( instance, name, IMAGE_BITMAP, 0, 0, 0 );
 632 }
 633
 634 /**********************************************************************
 635  *          LoadBitmap16    (USER.175)
 636  */
 637 HBITMAP16 WINAPI LoadBitmap16( HINSTANCE16 instance, SEGPTR name )
 638 {
 639     LPCSTR nameStr = HIWORD(name)? PTR_SEG_TO_LIN(name) : (LPCSTR)name;
 640     return LoadBitmapA( instance, nameStr );
 641 }
 642
 643
 644
 645 /***********************************************************************
 646  *           BITMAP_DeleteObject
 647  */
 648 BOOL BITMAP_DeleteObject( HBITMAP16 hbitmap, BITMAPOBJ * bmp )
 649 {
 650     if( bmp->DDBitmap ) {
 651         if( bmp->DDBitmap->funcs->pDeleteObject )
 652             bmp->DDBitmap->funcs->pDeleteObject( hbitmap );
 653     }
 654
 655     if( bmp->bitmap.bmBits )
 656         HeapFree( GetProcessHeap(), 0, bmp->bitmap.bmBits );
 657
 658     DIB_DeleteDIBSection( bmp );
 659
 660     return GDI_FreeObject( hbitmap );
 661 }
 662
 663
 664 /***********************************************************************
 665  *           BITMAP_GetObject16
 666  */
 667 INT16 BITMAP_GetObject16( BITMAPOBJ * bmp, INT16 count, LPVOID buffer )
 668 {
 669     if (bmp->dib)
 670     {
 671         if ( count <= sizeof(BITMAP16) )
 672         {
 673             BITMAP *bmp32 = &bmp->dib->dsBm;
 674             BITMAP16 bmp16;
 675             bmp16.bmType       = bmp32->bmType;
 676             bmp16.bmWidth      = bmp32->bmWidth;
 677             bmp16.bmHeight     = bmp32->bmHeight;
 678             bmp16.bmWidthBytes = bmp32->bmWidthBytes;
 679             bmp16.bmPlanes     = bmp32->bmPlanes;
 680             bmp16.bmBitsPixel  = bmp32->bmBitsPixel;
 681             bmp16.bmBits       = (SEGPTR)0;
 682             memcpy( buffer, &bmp16, count );
 683             return count;
 684         }
 685         else
 686         {
 687             FIXME_(bitmap)("not implemented for DIBs: count %d\n", count);
 688             return 0;
 689         }
 690     }
 691     else
 692     {
 693         BITMAP16 bmp16;
 694         bmp16.bmType       = bmp->bitmap.bmType;
 695         bmp16.bmWidth      = bmp->bitmap.bmWidth;
 696         bmp16.bmHeight     = bmp->bitmap.bmHeight;
 697         bmp16.bmWidthBytes = bmp->bitmap.bmWidthBytes;
 698         bmp16.bmPlanes     = bmp->bitmap.bmPlanes;
 699         bmp16.bmBitsPixel  = bmp->bitmap.bmBitsPixel;
 700         bmp16.bmBits       = (SEGPTR)0;
 701         if (count > sizeof(bmp16)) count = sizeof(bmp16);
 702         memcpy( buffer, &bmp16, count );
 703         return count;
 704     }
 705 }
 706
 707
 708 /***********************************************************************
 709  *           BITMAP_GetObject32
 710  */
 711 INT BITMAP_GetObject( BITMAPOBJ * bmp, INT count, LPVOID buffer )
 712 {
 713     if (bmp->dib)
 714     {
 715         if (count < sizeof(DIBSECTION))
 716         {
 717             if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 718         }
 719         else
 720         {
 721             if (count > sizeof(DIBSECTION)) count = sizeof(DIBSECTION);
 722         }
 723
 724         memcpy( buffer, bmp->dib, count );
 725         return count;
 726     }
 727     else
 728     {
 729         if (count > sizeof(BITMAP)) count = sizeof(BITMAP);
 730         memcpy( buffer, &bmp->bitmap, count );
 731         return count;
 732     }
 733 }
 734
 735
 736 /***********************************************************************
 737  *           CreateDiscardableBitmap16    (GDI.156)
 738  */
 739 HBITMAP16 WINAPI CreateDiscardableBitmap16( HDC16 hdc, INT16 width,
 740                                             INT16 height )
 741 {
 742     return CreateCompatibleBitmap16( hdc, width, height );
 743 }
 744
 745
 746 /******************************************************************************
 747  * CreateDiscardableBitmap32 [GDI32.38]  Creates a discardable bitmap
 748  *
 749  * RETURNS
 750  *    Success: Handle to bitmap
 751  *    Failure: NULL
 752  */
 753 HBITMAP WINAPI CreateDiscardableBitmap(
 754     HDC hdc,    /* [in] Handle to device context */
 755     INT width,  /* [in] Bitmap width */
 756     INT height) /* [in] Bitmap height */
 757 {
 758     return CreateCompatibleBitmap( hdc, width, height );
 759 }
 760
 761
 762 /***********************************************************************
 763  *           GetBitmapDimensionEx16    (GDI.468)
 764  *
 765  * NOTES
 766  *    Can this call GetBitmapDimensionEx32?
 767  */
 768 BOOL16 WINAPI GetBitmapDimensionEx16( HBITMAP16 hbitmap, LPSIZE16 size )
 769 {
 770     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 771     if (!bmp) return FALSE;
 772     CONV_SIZE32TO16( &bmp->size, size );
 773     GDI_HEAP_UNLOCK( hbitmap );
 774     return TRUE;
 775 }
 776
 777
 778 /******************************************************************************
 779  * GetBitmapDimensionEx32 [GDI32.144]  Retrieves dimensions of a bitmap
 780  *
 781  * RETURNS
 782  *    Success: TRUE
 783  *    Failure: FALSE
 784  */
 785 BOOL WINAPI GetBitmapDimensionEx(
 786     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 787     LPSIZE size)     /* [out] Address of struct receiving dimensions */
 788 {
 789     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 790     if (!bmp) return FALSE;
 791     *size = bmp->size;
 792     GDI_HEAP_UNLOCK( hbitmap );
 793     return TRUE;
 794 }
 795
 796
 797 /***********************************************************************
 798  *           GetBitmapDimension    (GDI.162)
 799  */
 800 DWORD WINAPI GetBitmapDimension16( HBITMAP16 hbitmap )
 801 {
 802     SIZE16 size;
 803     if (!GetBitmapDimensionEx16( hbitmap, &size )) return 0;
 804     return MAKELONG( size.cx, size.cy );
 805 }
 806
 807
 808 /***********************************************************************
 809  *           SetBitmapDimensionEx16    (GDI.478)
 810  */
 811 BOOL16 WINAPI SetBitmapDimensionEx16( HBITMAP16 hbitmap, INT16 x, INT16 y,
 812                                       LPSIZE16 prevSize )
 813 {
 814     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 815     if (!bmp) return FALSE;
 816     if (prevSize) CONV_SIZE32TO16( &bmp->size, prevSize );
 817     bmp->size.cx = x;
 818     bmp->size.cy = y;
 819     GDI_HEAP_UNLOCK( hbitmap );
 820     return TRUE;
 821 }
 822
 823
 824 /******************************************************************************
 825  * SetBitmapDimensionEx32 [GDI32.304]  Assignes dimensions to a bitmap
 826  *
 827  * RETURNS
 828  *    Success: TRUE
 829  *    Failure: FALSE
 830  */
 831 BOOL WINAPI SetBitmapDimensionEx(
 832     HBITMAP hbitmap, /* [in]  Handle to bitmap */
 833     INT x,           /* [in]  Bitmap width */
 834     INT y,           /* [in]  Bitmap height */
 835     LPSIZE prevSize) /* [out] Address of structure for orig dims */
 836 {
 837     BITMAPOBJ * bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC );
 838     if (!bmp) return FALSE;
 839     if (prevSize) *prevSize = bmp->size;
 840     bmp->size.cx = x;
 841     bmp->size.cy = y;
 842     GDI_HEAP_UNLOCK( hbitmap );
 843     return TRUE;
 844 }
 845
 846
 847 /***********************************************************************
 848  *           SetBitmapDimension    (GDI.163)
 849  */
 850 DWORD WINAPI SetBitmapDimension16( HBITMAP16 hbitmap, INT16 x, INT16 y )
 851 {
 852     SIZE16 size;
 853     if (!SetBitmapDimensionEx16( hbitmap, x, y, &size )) return 0;
 854     return MAKELONG( size.cx, size.cy );
 855 }
 856