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 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33
  34 #include "winbase.h"
  35 #include "windef.h"
  36 #include "winerror.h"
  37 #include "wingdi.h"
  38 #include "winuser.h"
  39 #include "wine/winbase16.h"
  40 #include "cursoricon.h"
  41 #include "wine/debug.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(icon);
  44
  45 #include "pshpack1.h"
  46
  47 typedef struct
  48 {
  49     BYTE        bWidth;          /* Width, in pixels, of the image      */
  50     BYTE        bHeight;         /* Height, in pixels, of the image     */
  51     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  52     BYTE        bReserved;       /* Reserved ( must be 0)               */
  53     WORD        wPlanes;         /* Color Planes                        */
  54     WORD        wBitCount;       /* Bits per pixel                      */
  55     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  56     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  57 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  58
  59 typedef struct
  60 {
  61     WORD            idReserved;   /* Reserved (must be 0) */
  62     WORD            idType;       /* Resource Type (RES_ICON or RES_CURSOR) */
  63     WORD            idCount;      /* How many images */
  64     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  65 } icoICONDIR, *LPicoICONDIR;
  66
  67 #include "poppack.h"
  68
  69 #if 0
  70 static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
  71 {
  72         TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
  73         TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
  74         TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
  75         entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
  76 }
  77 static void dumpIcoDir ( LPicoICONDIR entry )
  78 {
  79         TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
  80 }
  81 #endif
  82
  83 /**********************************************************************
  84  *  find_entry_by_id
  85  *
  86  * Find an entry by id in a resource directory
  87  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
  88  */
  89 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  90                                                          WORD id, const void *root )
  91 {
  92     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  93     int min, max, pos;
  94
  95     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  96     min = dir->NumberOfNamedEntries;
  97     max = min + dir->NumberOfIdEntries - 1;
  98     while (min <= max)
  99     {
 100         pos = (min + max) / 2;
 101         if (entry[pos].u1.s2.Id == id)
 102             return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
 103         if (entry[pos].u1.s2.Id > id) max = pos - 1;
 104         else min = pos + 1;
 105     }
 106     return NULL;
 107 }
 108
 109 /**********************************************************************
 110  *  find_entry_default
 111  *
 112  * Find a default entry in a resource directory
 113  * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
 114  */
 115 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
 116                                                            const void *root )
 117 {
 118     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
 119     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
 120     return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
 121 }
 122
 123 /*************************************************************************
 124  *                              USER32_GetResourceTable
 125  */
 126 static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
 127 {
 128         IMAGE_DOS_HEADER        * mz_header;
 129
 130         TRACE("%p %p\n", peimage, retptr);
 131
 132         *retptr = NULL;
 133
 134         mz_header = (IMAGE_DOS_HEADER*) peimage;
 135
 136         if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
 137         {
 138           if (mz_header->e_cblp == 1)   /* .ICO file ? */
 139           {
 140             *retptr = (LPBYTE)-1;       /* ICONHEADER.idType, must be 1 */
 141             return 1;
 142           }
 143           else
 144             return 0; /* failed */
 145         }
 146         if (mz_header->e_lfanew >= pesize) {
 147             return 0; /* failed, happens with PKZIP DOS Exes for instance. */
 148         }
 149         if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
 150           return IMAGE_NT_SIGNATURE;
 151
 152         if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
 153         {
 154           IMAGE_OS2_HEADER      * ne_header;
 155
 156           ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
 157
 158           if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
 159             return 0;
 160
 161           if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
 162             *retptr = (LPBYTE)-1;
 163           else
 164             *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
 165
 166           return IMAGE_OS2_SIGNATURE;
 167         }
 168         return 0; /* failed */
 169 }
 170 /*************************************************************************
 171  *                      USER32_LoadResource
 172  */
 173 static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
 174 {
 175         TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
 176
 177         *uSize = (DWORD)pNInfo->length << sizeShift;
 178         return peimage + ((DWORD)pNInfo->offset << sizeShift);
 179 }
 180
 181 /*************************************************************************
 182  *                      ICO_LoadIcon
 183  */
 184 static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
 185 {
 186         TRACE("%p %p\n", peimage, lpiIDE);
 187
 188         *uSize = lpiIDE->dwBytesInRes;
 189         return peimage + lpiIDE->dwImageOffset;
 190 }
 191
 192 /*************************************************************************
 193  *                      ICO_GetIconDirectory
 194  *
 195  * Reads .ico file and build phony ICONDIR struct
 196  * see http://www.microsoft.com/win32dev/ui/icons.htm
 197  */
 198 #define HEADER_SIZE             (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
 199 #define HEADER_SIZE_FILE        (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
 200
 201 static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
 202 {
 203         CURSORICONDIR   * lpcid;        /* icon resource in resource-dir format */
 204         CURSORICONDIR   * lpID;         /* icon resource in resource format */
 205         int             i;
 206
 207         TRACE("%p %p\n", peimage, lplpiID);
 208
 209         lpcid = (CURSORICONDIR*)peimage;
 210
 211         if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
 212           return 0;
 213
 214         /* allocate the phony ICONDIR structure */
 215         *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
 216         if( (lpID = (CURSORICONDIR*)HeapAlloc(GetProcessHeap(),0, *uSize) ))
 217         {
 218           /* copy the header */
 219           lpID->idReserved = lpcid->idReserved;
 220           lpID->idType = lpcid->idType;
 221           lpID->idCount = lpcid->idCount;
 222
 223           /* copy the entries */
 224           for( i=0; i < lpcid->idCount; i++ )
 225           {
 226             memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
 227             lpID->idEntries[i].wResId = i;
 228           }
 229
 230           *lplpiID = (LPicoICONDIR)peimage;
 231           return (BYTE *)lpID;
 232         }
 233         return 0;
 234 }
 235
 236 /*************************************************************************
 237  *      ICO_ExtractIconExW              [internal]
 238  *
 239  * NOTES
 240  *  nIcons = 0: returns number of Icons in file
 241  *
 242  * returns
 243  *  failure:0; success: icon handle or nr of icons (nIconIndex-1)
 244  */
 245 static HRESULT ICO_ExtractIconExW(
 246         LPCWSTR lpszExeFileName,
 247         HICON * RetPtr,
 248         INT nIconIndex,
 249         UINT nIcons,
 250         UINT cxDesired,
 251         UINT cyDesired )
 252 {
 253         HGLOBAL         hRet = E_FAIL;
 254         LPBYTE          pData;
 255         DWORD           sig;
 256         HANDLE          hFile;
 257         UINT16          iconDirCount = 0,iconCount = 0;
 258         LPBYTE          peimage;
 259         HANDLE          fmapping;
 260         ULONG           uSize;
 261         DWORD           fsizeh,fsizel;
 262
 263         TRACE("(file %s,start %d,extract %d\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons);
 264
 265         hFile = CreateFileW( lpszExeFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 );
 266         if (hFile == INVALID_HANDLE_VALUE) return hRet;
 267         fsizel = GetFileSize(hFile,&fsizeh);
 268
 269         /* Map the file */
 270         fmapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL );
 271         CloseHandle( hFile );
 272         if (!fmapping)
 273         {
 274           WARN("CreateFileMapping error %ld\n", GetLastError() );
 275           return hRet;
 276         }
 277
 278         if ( !(peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0)))
 279         {
 280           WARN("MapViewOfFile error %ld\n", GetLastError() );
 281           CloseHandle( fmapping );
 282           return hRet;
 283         }
 284         CloseHandle( fmapping );
 285
 286         sig = USER32_GetResourceTable(peimage,fsizel,&pData);
 287
 288 /* ico file */
 289         if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
 290         {
 291           BYTE          *pCIDir = 0;
 292           NE_TYPEINFO   *pTInfo = (NE_TYPEINFO*)(pData + 2);
 293           NE_NAMEINFO   *pIconStorage = NULL;
 294           NE_NAMEINFO   *pIconDir = NULL;
 295           LPicoICONDIR  lpiID = NULL;
 296
 297           TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
 298
 299           if( pData == (BYTE*)-1 )
 300           {
 301             /* FIXME: pCIDir is allocated on the heap - memory leak */
 302             pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize);     /* check for .ICO file */
 303             if( pCIDir )
 304             {
 305               iconDirCount = 1; iconCount = lpiID->idCount;
 306               TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
 307             }
 308           }
 309           else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
 310           {
 311             if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON )      /* find icon directory and icon repository */
 312             {
 313               iconDirCount = pTInfo->count;
 314               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 315               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 316             }
 317             if( pTInfo->type_id == NE_RSCTYPE_ICON )
 318             {
 319               iconCount = pTInfo->count;
 320               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 321               TRACE("\ttotal icons - %i\n", iconCount);
 322             }
 323             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 324           }
 325
 326           if( (pIconStorage && pIconDir) || lpiID )       /* load resources and create icons */
 327           {
 328             if( nIcons == 0 )
 329             {
 330               hRet = iconDirCount;
 331             }
 332             else if( nIconIndex < iconDirCount )
 333             {
 334               UINT16   i, icon;
 335               if( nIcons > iconDirCount - nIconIndex )
 336                 nIcons = iconDirCount - nIconIndex;
 337
 338               for( i = nIconIndex; i < nIconIndex + nIcons; i++ )
 339               {
 340                 /* .ICO files have only one icon directory */
 341                 if( lpiID == NULL )     /* *.ico */
 342                   pCIDir = USER32_LoadResource( peimage, pIconDir + i, *(WORD*)pData, &uSize );
 343                 RetPtr[i-nIconIndex] = LookupIconIdFromDirectoryEx( pCIDir, TRUE, cxDesired, cyDesired, 0);
 344               }
 345
 346               for( icon = nIconIndex; icon < nIconIndex + nIcons; icon++ )
 347               {
 348                 pCIDir = NULL;
 349                 if( lpiID )
 350                   pCIDir = ICO_LoadIcon( peimage, lpiID->idEntries + RetPtr[icon-nIconIndex], &uSize);
 351                 else
 352                   for( i = 0; i < iconCount; i++ )
 353                     if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
 354                       pCIDir = USER32_LoadResource( peimage, pIconStorage + i,*(WORD*)pData, &uSize );
 355
 356                 if( pCIDir )
 357                   RetPtr[icon-nIconIndex] = (HICON) CreateIconFromResourceEx(pCIDir,uSize,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 358                 else
 359                   RetPtr[icon-nIconIndex] = 0;
 360               }
 361               hRet = S_OK;
 362             }
 363           }
 364         }
 365 /* end ico file */
 366
 367 /* exe/dll */
 368         else if( sig == IMAGE_NT_SIGNATURE )
 369         {
 370           LPBYTE                idata,igdata;
 371           PIMAGE_DOS_HEADER     dheader;
 372           PIMAGE_NT_HEADERS     pe_header;
 373           PIMAGE_SECTION_HEADER pe_sections;
 374           const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
 375           const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
 376           const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
 377           int                   i,j;
 378
 379           dheader = (PIMAGE_DOS_HEADER)peimage;
 380           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);     /* it is a pe header, USER32_GetResourceTable checked that */
 381           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header)); /* probably makes problems with short PE headers...*/
 382           rootresdir = NULL;
 383
 384           /* search for the root resource directory */
 385           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 386           {
 387             if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 388               continue;
 389             if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
 390               FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
 391                       debugstr_w(lpszExeFileName),
 392                       pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
 393                       fsizel
 394               );
 395               goto end;
 396             }
 397             /* FIXME: doesn't work when the resources are not in a separate section */
 398             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 399             {
 400               rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
 401               break;
 402             }
 403           }
 404
 405           if (!rootresdir)
 406           {
 407             WARN("haven't found section for resource directory.\n");
 408             goto end;           /* failure */
 409           }
 410
 411           /* search for the group icon directory */
 412           if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICONW), rootresdir)))
 413           {
 414             WARN("No Icongroupresourcedirectory!\n");
 415             goto end;           /* failure */
 416           }
 417           iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
 418
 419           /* only number of icons requested */
 420           if( nIcons == 0 )
 421           {
 422             hRet = iconDirCount;
 423             goto end;           /* success */
 424           }
 425
 426           if( nIconIndex < 0 )
 427           {
 428             /* search resource id */
 429             int n = 0;
 430             int iId = abs(nIconIndex);
 431             PIMAGE_RESOURCE_DIRECTORY_ENTRY xprdeTmp = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
 432
 433             while(n<iconDirCount && xprdeTmp)
 434             {
 435               if(xprdeTmp->u1.s2.Id ==  iId)
 436               {
 437                   nIconIndex = n;
 438                   break;
 439               }
 440               n++;
 441               xprdeTmp++;
 442             }
 443             if (nIconIndex < 0)
 444             {
 445               WARN("resource id %d not found\n", iId);
 446               goto end;         /* failure */
 447             }
 448           }
 449           else
 450           {
 451             /* check nIconIndex to be in range */
 452             if (nIconIndex >= iconDirCount)
 453             {
 454               WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 455               goto end;         /* failure */
 456             }
 457           }
 458
 459           /* assure we don't get too much */
 460           if( nIcons > iconDirCount - nIconIndex )
 461             nIcons = iconDirCount - nIconIndex;
 462
 463           /* starting from specified index */
 464           xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1) + nIconIndex;
 465
 466           for (i=0; i < nIcons; i++,xresent++)
 467           {
 468               const IMAGE_RESOURCE_DIRECTORY *resdir;
 469
 470             /* go down this resource entry, name */
 471             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s3.OffsetToDirectory));
 472
 473             /* default language (0) */
 474             resdir = find_entry_default(resdir,rootresdir);
 475             igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
 476
 477             /* lookup address in mapped image for virtual address */
 478             igdata = NULL;
 479
 480             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 481             {
 482               if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 483                 continue;
 484               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 485                 continue;
 486
 487               if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
 488                   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);
 489                   goto end; /* failure */
 490               }
 491               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 492             }
 493
 494             if (!igdata)
 495             {
 496               FIXME("no matching real address for icongroup!\n");
 497               goto end; /* failure */
 498             }
 499             RetPtr[i] = (HICON)LookupIconIdFromDirectoryEx(igdata, TRUE, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 500           }
 501
 502           if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICONW),rootresdir)))
 503           {
 504             WARN("No Iconresourcedirectory!\n");
 505             goto end;           /* failure */
 506           }
 507
 508           for (i=0; i<nIcons; i++)
 509           {
 510               const IMAGE_RESOURCE_DIRECTORY *xresdir;
 511               xresdir = find_entry_by_id(iconresdir,RetPtr[i],rootresdir);
 512               xresdir = find_entry_default(xresdir,rootresdir);
 513             idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
 514             idata = NULL;
 515
 516             /* map virtual to address in image */
 517             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 518             {
 519               if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 520                 continue;
 521               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 522                 continue;
 523               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 524             }
 525             if (!idata)
 526             {
 527               WARN("no matching real address found for icondata!\n");
 528               RetPtr[i]=0;
 529               continue;
 530             }
 531             RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
 532           }
 533           hRet = S_OK;  /* return first icon */
 534         }                       /* if(sig == IMAGE_NT_SIGNATURE) */
 535
 536 end:    UnmapViewOfFile(peimage);       /* success */
 537         return hRet;
 538 }
 539
 540 /***********************************************************************
 541  *           PrivateExtractIconsW                       [USER32.@]
 542  *
 543  * NOTES
 544  *  nIndex = 1: a small and a large icon are extracted.
 545  *  the higher word of sizeXY contains the size of the small icon, the lower
 546  *  word the size of the big icon. phicon points to HICON[2].
 547  *
 548  * RETURNS
 549  *  nIcons > 0: HRESULT
 550  *  nIcons = 0: the number of icons
 551  */
 552
 553 HRESULT WINAPI PrivateExtractIconsW (
 554         LPCWSTR lpwstrFile,
 555         int nIndex,
 556         DWORD sizeX,
 557         DWORD sizeY,
 558         HICON * phicon, /* [???] NOTE: HICON* */
 559         DWORD w,        /* [in] NOTE: 0 */
 560         UINT nIcons,
 561         DWORD y )       /* [in] NOTE: 0x80 maybe LR_* constant */
 562 {
 563         DWORD ret;
 564         TRACE("%s 0x%08x 0x%08lx 0x%08lx %p 0x%08lx 0x%08x 0x%08lx\n",
 565         debugstr_w(lpwstrFile),nIndex, sizeX ,sizeY ,phicon,w,nIcons,y );
 566
 567         if ((nIcons == 2) && HIWORD(sizeX) && HIWORD(sizeY))
 568         {
 569           ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, 1, sizeX & 0xffff, sizeY & 0xffff );
 570           if (!SUCCEEDED(ret)) return ret;
 571           ret = ICO_ExtractIconExW(lpwstrFile, phicon+1, nIndex, 1, (sizeX>>16) & 0xffff, (sizeY>>16) & 0xffff );
 572         } else
 573           ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX & 0xffff, sizeY & 0xffff );
 574         return ret;
 575 }
 576
 577 /***********************************************************************
 578  *           PrivateExtractIconsA                       [USER32.@]
 579  */
 580
 581 HRESULT WINAPI PrivateExtractIconsA (
 582         LPCSTR lpstrFile,
 583         INT nIndex,
 584         DWORD sizeX,
 585         DWORD sizeY,
 586         HICON * phicon,
 587         DWORD w,        /* [in] NOTE: 0 */
 588         UINT  nIcons,
 589         DWORD y )       /* [in] NOTE: 0x80 */
 590 {
 591         DWORD ret;
 592         INT len = MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, NULL, 0 );
 593         LPWSTR lpwstrFile = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 594
 595         MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, lpwstrFile, len );
 596         ret = PrivateExtractIconsW(
 597                 lpwstrFile, nIndex, sizeX, sizeY, phicon, w, nIcons, y
 598         );
 599
 600         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 601         return ret;
 602 }
 603
 604 /***********************************************************************
 605  *           PrivateExtractIconExW                      [USER32.@]
 606  * NOTES
 607  *  if nIcons = -1 it returns the number of icons in any case !!!
 608  */
 609 HRESULT WINAPI PrivateExtractIconExW (
 610         LPCWSTR lpwstrFile,
 611         DWORD nIndex,
 612         HICON * phIconLarge,
 613         HICON * phIconSmall,
 614         UINT nIcons )
 615 {
 616         DWORD cyicon, cysmicon, cxicon, cxsmicon;
 617         HRESULT ret = 0;
 618
 619         TRACE("%s 0x%08lx %p %p 0x%08x\n",
 620         debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
 621
 622         if (nIndex == 1 && phIconSmall && phIconLarge)
 623         {
 624           HICON hIcon[2];
 625           cxicon = GetSystemMetrics(SM_CXICON);
 626           cyicon = GetSystemMetrics(SM_CYICON);
 627           cxsmicon = GetSystemMetrics(SM_CXSMICON);
 628           cysmicon = GetSystemMetrics(SM_CYSMICON);
 629
 630           ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon | (cxsmicon<<16),  cyicon | (cysmicon<<16),
 631           (HICON*) &hIcon, 0, 2, 0 );
 632           *phIconLarge = hIcon[0];
 633           *phIconSmall = hIcon[1];
 634           return ret;
 635         }
 636
 637         if (nIndex != -1)
 638         {
 639           if (phIconSmall)
 640           {
 641             /* extract n small icons */
 642             cxsmicon = GetSystemMetrics(SM_CXSMICON);
 643             cysmicon = GetSystemMetrics(SM_CYSMICON);
 644             ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxsmicon, cysmicon, phIconSmall, 0, nIcons, 0 );
 645           }
 646           if (phIconLarge )
 647           {
 648             /* extract n large icons */
 649             cxicon = GetSystemMetrics(SM_CXICON);
 650             cyicon = GetSystemMetrics(SM_CYICON);
 651             ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon, cyicon, phIconLarge, 0, nIcons, 0 );
 652           }
 653           return ret;
 654         }
 655
 656         /* get the number of icons */
 657         return PrivateExtractIconsW ( lpwstrFile, 0, 0, 0, 0, 0, 0, 0 );
 658 }
 659
 660 /***********************************************************************
 661  *           PrivateExtractIconExA                      [USER32.@]
 662  */
 663 HRESULT WINAPI PrivateExtractIconExA (
 664         LPCSTR lpstrFile,
 665         DWORD nIndex,
 666         HICON * phIconLarge,
 667         HICON * phIconSmall,
 668         UINT nIcons )
 669 {
 670         DWORD ret;
 671         INT len = MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, NULL, 0 );
 672         LPWSTR lpwstrFile = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 673
 674         TRACE("%s 0x%08lx %p %p 0x%08x\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
 675
 676         MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, lpwstrFile, len );
 677         ret = PrivateExtractIconExW(lpwstrFile,nIndex,phIconLarge, phIconSmall, nIcons);
 678         HeapFree(GetProcessHeap(), 0, lpwstrFile);
 679         return ret;
 680 }