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

   1 /*
   2  *      icon extracting
   3  *
   4  * taken and slightly changed from shell
   5  * this should replace the icon extraction code in shell32 and shell16 once
   6  * it needs a serious test for compliance with the native API
   7  *
   8  * Copyright 2000 Juergen Schmied
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include "config.h"
  26
  27 #include <string.h>
  28 #include <stdlib.h>     /* abs() */
  29 #include <sys/types.h>
  30 #include <unistd.h>
  31
  32 #include "winbase.h"
  33 #include "windef.h"
  34 #include "winerror.h"
  35 #include "wingdi.h"
  36 #include "winuser.h"
  37 #include "wine/winbase16.h"
  38 #include "cursoricon.h"
  39 #include "wine/debug.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(icon);
  42
  43 #include "pshpack1.h"
  44
  45 typedef struct
  46 {
  47     BYTE        bWidth;          /* Width, in pixels, of the image      */
  48     BYTE        bHeight;         /* Height, in pixels, of the image     */
  49     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  50     BYTE        bReserved;       /* Reserved ( must be 0)               */
  51     WORD        wPlanes;         /* Color Planes                        */
  52     WORD        wBitCount;       /* Bits per pixel                      */
  53     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  54     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  55 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  56
  57 typedef struct
  58 {
  59     WORD            idReserved;   /* Reserved (must be 0) */
  60     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  61     WORD            idCount;      /* How many images */
  62     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  63 } icoICONDIR, *LPicoICONDIR;
  64
  65 #include "poppack.h"
  66
  67 #if 0
  68 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  69 {
  70         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  71         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  72         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  73         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  74 }
  75 static void dumpIcoDir ( LPicoICONDIR entry )
  76 {
  77         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
  78 }
  79 #endif
  80
  81 /**********************************************************************
  82  *  find_entry_by_id
  83  *
  84  * Find an entry by id in a resource directory
  85  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
  86  */
  87 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  88                                                          WORD id, const void *root )
  89 {
  90     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  91     int min, max, pos;
  92
  93     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  94     min = dir->NumberOfNamedEntries;
  95     max = min + dir->NumberOfIdEntries - 1;
  96     while (min <= max)
  97     {
  98         pos = (min + max) / 2;
  99         if (entry[pos].u1.s2.Id == id)
 100             return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
 101         if (entry[pos].u1.s2.Id > id) max = pos - 1;
 102         else min = pos + 1;
 103     }
 104     return NULL;
 105 }
 106
 107 /**********************************************************************
 108  *  find_entry_default
 109  *
 110  * Find a default entry in a resource directory
 111  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 112  */
 113 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 114                                                            const void *root )
 115 {
 116     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 117     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 118     return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
 119 }
 120
 121 /*************************************************************************
 122  *                              USER32_GetResourceTable
 123  */
 124 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 125 {
 126         IMAGE_DOS_HEADER        * mz_header;
 127
 128         TRACE("%p %p\n", peimage, retptr);
 129
 130         *retptr = NULL;
 131
 132         mz_header = (IMAGE_DOS_HEADER*) peimage;
 133
 134         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 135         {
 136           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 137           {
 138             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 139             return 1;
 140           }
 141           else
 142             return 0; /* failed */
 143         }
 144         if (mz_header->e_lfanew >= pesize) {
 145             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 146         }
 147         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 148           return IMAGE_NT_SIGNATURE;
 149
 150         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 151         {
 152           IMAGE_OS2_HEADER      * ne_header;
 153
 154           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 155
 156           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 157             return 0;
 158
 159           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 160             *retptr = (LPBYTE)-1;
 161           else
 162             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 163
 164           return IMAGE_OS2_SIGNATURE;
 165         }
 166         return 0; /* failed */
 167 }
 168 /*************************************************************************
 169  *                      USER32_LoadResource
 170  */
 171 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 172 {
 173         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 174
 175         *uSize = (DWORD)pNInfo->length << sizeShift;
 176         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 177 }
 178
 179 /*************************************************************************
 180  *                      ICO_LoadIcon
 181  */
 182 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 183 {
 184         TRACE("%p %p\n", peimage, lpiIDE);
 185
 186         *uSize = lpiIDE->dwBytesInRes;
 187         return peimage + lpiIDE->dwImageOffset;
 188 }
 189
 190 /*************************************************************************
 191  *                      ICO_GetIconDirectory
 192  *
 193  * Reads .ico file and build phony ICONDIR struct
 194  * see http://www.microsoft.com/win32dev/ui/icons.htm
 195  */
 196 #define HEADER_SIZE             (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
 197 #define HEADER_SIZE_FILE        (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
 198
 199 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 200 {
 201         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 202         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 203         int             i;
 204
 205         TRACE("%p %p\n", peimage, lplpiID);
 206
 207         lpcid = (CURSORICONDIR*)peimage;
 208
 209         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 210           return 0;
 211
 212         /* allocate the phony ICONDIR structure */
 213         *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
 214         if( (lpID = (CURSORICONDIR*)HeapAlloc(GetProcessHeap(),0, *uSize) ))
 215         {
 216           /* copy the header */
 217           lpID->idReserved = lpcid->idReserved;
 218           lpID->idType = lpcid->idType;
 219           lpID->idCount = lpcid->idCount;
 220
 221           /* copy the entries */
 222           for( i=0; i < lpcid->idCount; i++ )
 223           {
 224             memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
 225             lpID->idEntries[i].wResId = i;
 226           }
 227
 228           *lplpiID = (LPicoICONDIR)peimage;
 229           return (BYTE *)lpID;
 230         }
 231         return 0;
 232 }
 233
 234 /*************************************************************************
 235  *      ICO_ExtractIconExW              [internal]
 236  *
 237  * NOTES
 238  *  nIcons = 0: returns number of Icons in file
 239  *
 240  * returns
 241  *  failure:0; success: icon handle or nr of icons (nIconIndex-1)
 242  */
 243 static HRESULT ICO_ExtractIconExW(
 244         LPCWSTR lpszExeFileName,
 245         HICON * RetPtr,
 246         INT nIconIndex,
 247         UINT nIcons,
 248         UINT cxDesired,
 249         UINT cyDesired )
 250 {
 251         HGLOBAL         hRet = E_FAIL;
 252         LPBYTE          pData;
 253         DWORD           sig;
 254         HANDLE          hFile;
 255         UINT16          iconDirCount = 0,iconCount = 0;
 256         LPBYTE          peimage;
 257         HANDLE          fmapping;
 258         ULONG           uSize;
 259         DWORD           fsizeh,fsizel;
 260
 261         TRACE("(file %s,start %d,extract %d\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons);
 262
 263         hFile = CreateFileW( lpszExeFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 );
 264         if (hFile == INVALID_HANDLE_VALUE) return hRet;
 265         fsizel = GetFileSize(hFile,&fsizeh);
 266
 267         /* Map the file */
 268         fmapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL );
 269         CloseHandle( hFile );
 270         if (!fmapping)
 271         {
 272           WARN("CreateFileMapping error %ld\n", GetLastError() );
 273           return hRet;
 274         }
 275
 276         if ( !(peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0)))
 277         {
 278           WARN("MapViewOfFile error %ld\n", GetLastError() );
 279           CloseHandle( fmapping );
 280           return hRet;
 281         }
 282         CloseHandle( fmapping );
 283
 284         sig = USER32_GetResourceTable(peimage,fsizel,&pData);
 285
 286 /* ico file */
 287         if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
 288         {
 289           BYTE          *pCIDir = 0;
 290           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 291           NE_NAMEINFO   *pIconStorage = NULL;
 292           NE_NAMEINFO   *pIconDir = NULL;
 293           LPicoICONDIR  lpiID = NULL;
 294
 295           TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
 296
 297           if( pData == (BYTE*)-1 )
 298           {
 299             /* FIXME: pCIDir is allocated on the heap - memory leak */
 300             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 301             if( pCIDir )
 302             {
 303               iconDirCount = 1; iconCount = lpiID->idCount;
 304               TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 305             }
 306           }
 307           else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
 308           {
 309             if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON )      /* find icon directory and icon repository */
 310             {
 311               iconDirCount = pTInfo->count;
 312               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 313               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 314             }
 315             if( pTInfo->type_id == NE_RSCTYPE_ICON )
 316             {
 317               iconCount = pTInfo->count;
 318               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 319               TRACE("\ttotal icons - %i\n", iconCount);
 320             }
 321             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 322           }
 323
 324           if( (pIconStorage && pIconDir) || lpiID )       /* load resources and create icons */
 325           {
 326             if( nIcons == 0 )
 327             {
 328               hRet = iconDirCount;
 329             }
 330             else if( nIconIndex < iconDirCount )
 331             {
 332               UINT16   i, icon;
 333               if( nIcons > iconDirCount - nIconIndex )
 334                 nIcons = iconDirCount - nIconIndex;
 335
 336               for( i = nIconIndex; i < nIconIndex + nIcons; i++ )
 337               {
 338                 /* .ICO files have only one icon directory */
 339                 if( lpiID == NULL )     /* *.ico */
 340                   pCIDir = USER32_LoadResource( peimage, pIconDir + i, *(WORD*)pData, &uSize );
 341                 RetPtr[i-nIconIndex] = LookupIconIdFromDirectoryEx( pCIDir, TRUE, cxDesired, cyDesired, 0);
 342               }
 343
 344               for( icon = nIconIndex; icon < nIconIndex + nIcons; icon++ )
 345               {
 346                 pCIDir = NULL;
 347                 if( lpiID )
 348                   pCIDir = ICO_LoadIcon( peimage, lpiID->idEntries + RetPtr[icon-nIconIndex], &uSize);
 349                 else
 350                   for( i = 0; i < iconCount; i++ )
 351                     if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
 352                       pCIDir = USER32_LoadResource( peimage, pIconStorage + i,*(WORD*)pData, &uSize );
 353
 354                 if( pCIDir )
 355                   RetPtr[icon-nIconIndex] = (HICON) CreateIconFromResourceEx(pCIDir,uSize,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 356                 else
 357                   RetPtr[icon-nIconIndex] = 0;
 358               }
 359               hRet = S_OK;
 360             }
 361           }
 362         }
 363 /* end ico file */
 364
 365 /* exe/dll */
 366         else if( sig == IMAGE_NT_SIGNATURE )
 367         {
 368           LPBYTE                idata,igdata;
 369           PIMAGE_DOS_HEADER     dheader;
 370           PIMAGE_NT_HEADERS     pe_header;
 371           PIMAGE_SECTION_HEADER pe_sections;
 372           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 373           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 374           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 375           int                   i,j;
 376
 377           dheader = (PIMAGE_DOS_HEADER)peimage;
 378           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 379           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header)); /* probably makes problems with short PE headers...*/
 380           rootresdir = NULL;
 381
 382           /* search for the root resource directory */
 383           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 384           {
 385             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 386               continue;
 387             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 388               FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
 389                       debugstr_w(lpszExeFileName),
 390                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 391                       fsizel
 392               );
 393               goto end;
 394             }
 395             /* FIXME: doesn't work when the resources are not in a separate section */
 396             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 397             {
 398               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 399               break;
 400             }
 401           }
 402
 403           if (!rootresdir)
 404           {
 405             WARN("haven't found section for resource directory.\n");
 406             goto end;           /* failure */
 407           }
 408
 409           /* search for the group icon directory */
 410           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICONW), rootresdir)))
 411           {
 412             WARN("No Icongroupresourcedirectory!\n");
 413             goto end;           /* failure */
 414           }
 415           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 416
 417           /* only number of icons requested */
 418           if( nIcons == 0 )
 419           {
 420             hRet = iconDirCount;
 421             goto end;           /* success */
 422           }
 423
 424           if( nIconIndex < 0 )
 425           {
 426             /* search resource id */
 427             int n = 0;
 428             int iId = abs(nIconIndex);
 429             PIMAGE_RESOURCE_DIRECTORY_ENTRY xprdeTmp = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
 430
 431             while(n<iconDirCount && xprdeTmp)
 432             {
 433               if(xprdeTmp->u1.s2.Id ==  iId)
 434               {
 435                   nIconIndex = n;
 436                   break;
 437               }
 438               n++;
 439               xprdeTmp++;
 440             }
 441             if (nIconIndex < 0)
 442             {
 443               WARN("resource id %d not found\n", iId);
 444               goto end;         /* failure */
 445             }
 446           }
 447           else
 448           {
 449             /* check nIconIndex to be in range */
 450             if (nIconIndex >= iconDirCount)
 451             {
 452               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 453               goto end;         /* failure */
 454             }
 455           }
 456
 457           /* assure we don't get too much */
 458           if( nIcons > iconDirCount - nIconIndex )
 459             nIcons = iconDirCount - nIconIndex;
 460
 461           /* starting from specified index */
 462           xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1) + nIconIndex;
 463
 464           for (i=0; i < nIcons; i++,xresent++)
 465           {
 466               const IMAGE_RESOURCE_DIRECTORY *resdir;
 467
 468             /* go down this resource entry, name */
 469             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s3.OffsetToDirectory));
 470
 471             /* default language (0) */
 472             resdir = find_entry_default(resdir,rootresdir);
 473             igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
 474
 475             /* lookup address in mapped image for virtual address */
 476             igdata = NULL;
 477
 478             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 479             {
 480               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 481                 continue;
 482               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 483                 continue;
 484
 485               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 486                   FIXME("overflow in PE lookup (%s has len %ld, have offset %ld), short file?\n",debugstr_w(lpszExeFileName),fsizel,igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size);
 487                   goto end; /* failure */
 488               }
 489               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 490             }
 491
 492             if (!igdata)
 493             {
 494               FIXME("no matching real address for icongroup!\n");
 495               goto end; /* failure */
 496             }
 497             RetPtr[i] = (HICON)LookupIconIdFromDirectoryEx(igdata, TRUE, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 498           }
 499
 500           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICONW),rootresdir)))
 501           {
 502             WARN("No Iconresourcedirectory!\n");
 503             goto end;           /* failure */
 504           }
 505
 506           for (i=0; i<nIcons; i++)
 507           {
 508               const IMAGE_RESOURCE_DIRECTORY *xresdir;
 509               xresdir = find_entry_by_id(iconresdir,RetPtr[i],rootresdir);
 510               xresdir = find_entry_default(xresdir,rootresdir);
 511             idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
 512             idata = NULL;
 513
 514             /* map virtual to address in image */
 515             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 516             {
 517               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 518                 continue;
 519               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 520                 continue;
 521               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 522             }
 523             if (!idata)
 524             {
 525               WARN("no matching real address found for icondata!\n");
 526               RetPtr[i]=0;
 527               continue;
 528             }
 529             RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 530           }
 531           hRet = S_OK;  /* return first icon */
 532         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 533
 534 end:    UnmapViewOfFile(peimage);       /* success */
 535         return hRet;
 536 }
 537
 538 /***********************************************************************
 539  *           PrivateExtractIconsW                       [USER32.@]
 540  *
 541  * NOTES
 542  *  nIndex = 1: a small and a large icon are extracted.
 543  *  the higher word of sizeXY contains the size of the small icon, the lower
 544  *  word the size of the big icon. phicon points to HICON[2].
 545  *
 546  * RETURNS
 547  *  nIcons > 0: HRESULT
 548  *  nIcons = 0: the number of icons
 549  */
 550
 551 HRESULT WINAPI PrivateExtractIconsW (
 552         LPCWSTR lpwstrFile,
 553         int nIndex,
 554         DWORD sizeX,
 555         DWORD sizeY,
 556         HICON * phicon, /* [???] NOTE: HICON* */
 557         DWORD w,        /* [in] NOTE: 0 */
 558         UINT nIcons,
 559         DWORD y )       /* [in] NOTE: 0x80 maybe LR_* constant */
 560 {
 561         DWORD ret;
 562         TRACE("%s 0x%08x 0x%08lx 0x%08lx %p 0x%08lx 0x%08x 0x%08lx\n",
 563         debugstr_w(lpwstrFile),nIndex, sizeX ,sizeY ,phicon,w,nIcons,y );
 564
 565         if ((nIcons == 2) && HIWORD(sizeX) && HIWORD(sizeY))
 566         {
 567           ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, 1, sizeX & 0xffff, sizeY & 0xffff );
 568           if (!SUCCEEDED(ret)) return ret;
 569           ret = ICO_ExtractIconExW(lpwstrFile, phicon+1, nIndex, 1, (sizeX>>16) & 0xffff, (sizeY>>16) & 0xffff );
 570         } else
 571           ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX & 0xffff, sizeY & 0xffff );
 572         return ret;
 573 }
 574
 575 /***********************************************************************
 576  *           PrivateExtractIconsA                       [USER32.@]
 577  */
 578
 579 HRESULT WINAPI PrivateExtractIconsA (
 580         LPCSTR lpstrFile,
 581         INT nIndex,
 582         DWORD sizeX,
 583         DWORD sizeY,
 584         HICON * phicon,
 585         DWORD w,        /* [in] NOTE: 0 */
 586         UINT  nIcons,
 587         DWORD y )       /* [in] NOTE: 0x80 */
 588 {
 589         DWORD ret;
 590         INT len = MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, NULL, 0 );
 591         LPWSTR lpwstrFile = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 592
 593         MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, lpwstrFile, len );
 594         ret = PrivateExtractIconsW(
 595                 lpwstrFile, nIndex, sizeX, sizeY, phicon, w, nIcons, y
 596         );
 597
 598         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 599         return ret;
 600 }
 601
 602 /***********************************************************************
 603  *           PrivateExtractIconExW                      [USER32.@]
 604  * NOTES
 605  *  if nIcons = -1 it returns the number of icons in any case !!!
 606  */
 607 HRESULT WINAPI PrivateExtractIconExW (
 608         LPCWSTR lpwstrFile,
 609         DWORD nIndex,
 610         HICON * phIconLarge,
 611         HICON * phIconSmall,
 612         UINT nIcons )
 613 {
 614         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 615         HRESULT ret = 0;
 616
 617         TRACE("%s 0x%08lx %p %p 0x%08x\n",
 618         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 619
 620         if (nIndex == 1 && phIconSmall && phIconLarge)
 621         {
 622           HICON hIcon[2];
 623           cxicon = GetSystemMetrics(SM_CXICON);
 624           cyicon = GetSystemMetrics(SM_CYICON);
 625           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 626           cysmicon = GetSystemMetrics(SM_CYSMICON);
 627
 628           ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon | (cxsmicon<<16),  cyicon | (cysmicon<<16),
 629           (HICON*) &hIcon, 0, 2, 0 );
 630           *phIconLarge = hIcon[0];
 631           *phIconSmall = hIcon[1];
 632           return ret;
 633         }
 634
 635         if (nIndex != -1)
 636         {
 637           if (phIconSmall)
 638           {
 639             /* extract n small icons */
 640             cxsmicon = GetSystemMetrics(SM_CXSMICON);
 641             cysmicon = GetSystemMetrics(SM_CYSMICON);
 642             ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxsmicon, cysmicon, phIconSmall, 0, nIcons, 0 );
 643           }
 644           if (phIconLarge )
 645           {
 646             /* extract n large icons */
 647             cxicon = GetSystemMetrics(SM_CXICON);
 648             cyicon = GetSystemMetrics(SM_CYICON);
 649             ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon, cyicon, phIconLarge, 0, nIcons, 0 );
 650           }
 651           return ret;
 652         }
 653
 654         /* get the number of icons */
 655         return PrivateExtractIconsW ( lpwstrFile, 0, 0, 0, 0, 0, 0, 0 );
 656 }
 657
 658 /***********************************************************************
 659  *           PrivateExtractIconExA                      [USER32.@]
 660  */
 661 HRESULT WINAPI PrivateExtractIconExA (
 662         LPCSTR lpstrFile,
 663         DWORD nIndex,
 664         HICON * phIconLarge,
 665         HICON * phIconSmall,
 666         UINT nIcons )
 667 {
 668         DWORD ret;
 669         INT len = MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, NULL, 0 );
 670         LPWSTR lpwstrFile = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 671
 672         TRACE("%s 0x%08lx %p %p 0x%08x\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 673
 674         MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, lpwstrFile, len );
 675         ret = PrivateExtractIconExW(lpwstrFile,nIndex,phIconLarge, phIconSmall, nIcons);
 676         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 677         return ret;
 678 }