source: trunk/src/user32/exticon.c@ 8706

Last change on this file since 8706 was 8049, checked in by sandervl, 23 years ago

PH: moved icon extraction from shell32 to user32
File size: 20.8 KB
Line 
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
9#include "config.h"
10
11#include <string.h>
12#include <stdlib.h> /* abs() */
13#include <sys/types.h>
14#include <unistd.h>
15
16
17#include "winbase.h"
18#include "windef.h"
19#include "winerror.h"
20#include "wingdi.h"
21#include "winuser.h"
22#include "wine/winbase16.h"
23#include "cursoricon.h"
24#ifdef __WIN32OS2__
25#include <odin.h>
26#include "module.h"
27#include "winnls.h"
28#define s2 s
29#define s3 s
30#endif
31#include "debugtools.h"
32
33DEFAULT_DEBUG_CHANNEL(icon);
34
35#include "pshpack1.h"
36
37typedef struct
38{
39 BYTE bWidth; /* Width, in pixels, of the image */
40 BYTE bHeight; /* Height, in pixels, of the image */
41 BYTE bColorCount; /* Number of colors in image (0 if >=8bpp) */
42 BYTE bReserved; /* Reserved ( must be 0) */
43 WORD wPlanes; /* Color Planes */
44 WORD wBitCount; /* Bits per pixel */
45 DWORD dwBytesInRes; /* How many bytes in this resource? */
46 DWORD dwImageOffset; /* Where in the file is this image? */
47} icoICONDIRENTRY, *LPicoICONDIRENTRY;
48
49typedef struct
50{
51 WORD idReserved; /* Reserved (must be 0) */
52 WORD idType; /* Resource Type (RES_ICON or RES_CURSOR) */
53 WORD idCount; /* How many images */
54 icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
55} icoICONDIR, *LPicoICONDIR;
56
57#include "poppack.h"
58
59#if 0
60static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
61{
62 TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
63 TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
64 TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
65 entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
66}
67static void dumpIcoDir ( LPicoICONDIR entry )
68{
69 TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
70}
71#endif
72
73/**********************************************************************
74 * find_entry_by_id
75 *
76 * Find an entry by id in a resource directory
77 * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
78 */
79static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
80 WORD id, const void *root )
81{
82 const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
83 int min, max, pos;
84
85 entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
86 min = dir->NumberOfNamedEntries;
87 max = min + dir->NumberOfIdEntries - 1;
88 while (min <= max)
89 {
90 pos = (min + max) / 2;
91 if (entry[pos].u1.Id == id)
92 return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
93 if (entry[pos].u1.Id > id) max = pos - 1;
94 else min = pos + 1;
95 }
96 return NULL;
97}
98
99/**********************************************************************
100 * find_entry_default
101 *
102 * Find a default entry in a resource directory
103 * Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
104 */
105static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
106 const void *root )
107{
108 const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
109 entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
110 return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
111}
112
113/*************************************************************************
114 * USER32_GetResourceTable
115 */
116static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
117{
118 IMAGE_DOS_HEADER * mz_header;
119
120 TRACE("%p %p\n", peimage, retptr);
121
122 *retptr = NULL;
123
124 mz_header = (IMAGE_DOS_HEADER*) peimage;
125
126 if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
127 {
128 if (mz_header->e_cblp == 1) /* .ICO file ? */
129 {
130 *retptr = (LPBYTE)-1; /* ICONHEADER.idType, must be 1 */
131 return 1;
132 }
133 else
134 return 0; /* failed */
135 }
136 if (mz_header->e_lfanew >= pesize) {
137 return 0; /* failed, happens with PKZIP DOS Exes for instance. */
138 }
139 if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
140 return IMAGE_NT_SIGNATURE;
141
142 if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
143 {
144 IMAGE_OS2_HEADER * ne_header;
145
146 ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
147
148 if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
149 return 0;
150
151 if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
152 *retptr = (LPBYTE)-1;
153 else
154 *retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
155
156 return IMAGE_OS2_SIGNATURE;
157 }
158 return 0; /* failed */
159}
160/*************************************************************************
161 * USER32_LoadResource
162 */
163static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
164{
165 TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
166
167 *uSize = (DWORD)pNInfo->length << sizeShift;
168 return peimage + ((DWORD)pNInfo->offset << sizeShift);
169}
170
171/*************************************************************************
172 * ICO_LoadIcon
173 */
174static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
175{
176 TRACE("%p %p\n", peimage, lpiIDE);
177
178 *uSize = lpiIDE->dwBytesInRes;
179 return peimage + lpiIDE->dwImageOffset;
180}
181
182/*************************************************************************
183 * ICO_GetIconDirectory
184 *
185 * Reads .ico file and build phony ICONDIR struct
186 * see http://www.microsoft.com/win32dev/ui/icons.htm
187 */
188#define HEADER_SIZE (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
189#define HEADER_SIZE_FILE (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
190
191static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
192{
193 CURSORICONDIR * lpcid; /* icon resource in resource-dir format */
194 CURSORICONDIR * lpID; /* icon resource in resource format */
195 int i;
196
197 TRACE("%p %p\n", peimage, lplpiID);
198
199 lpcid = (CURSORICONDIR*)peimage;
200
201 if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
202 return 0;
203
204 /* allocate the phony ICONDIR structure */
205 *uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
206 if( (lpID = (CURSORICONDIR*)HeapAlloc(GetProcessHeap(),0, *uSize) ))
207 {
208 /* copy the header */
209 lpID->idReserved = lpcid->idReserved;
210 lpID->idType = lpcid->idType;
211 lpID->idCount = lpcid->idCount;
212
213 /* copy the entries */
214 for( i=0; i < lpcid->idCount; i++ )
215 {
216 memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
217 lpID->idEntries[i].wResId = i;
218 }
219
220 *lplpiID = (LPicoICONDIR)peimage;
221 return (BYTE *)lpID;
222 }
223 return 0;
224}
225
226/*************************************************************************
227 * ICO_ExtractIconExW [internal]
228 *
229 * NOTES
230 * nIcons = 0: returns number of Icons in file
231 *
232 * returns
233 * failure:0; success: icon handle or nr of icons (nIconIndex-1)
234 */
235static HRESULT ICO_ExtractIconExW(
236 LPCWSTR lpszExeFileName,
237 HICON * RetPtr,
238 INT nIconIndex,
239 UINT nIcons,
240 UINT cxDesired,
241 UINT cyDesired )
242{
243 HGLOBAL hRet = E_FAIL;
244 LPBYTE pData;
245 DWORD sig;
246 HFILE hFile;
247 UINT16 iconDirCount = 0,iconCount = 0;
248 LPBYTE peimage;
249 HANDLE fmapping;
250 ULONG uSize;
251 DWORD fsizeh,fsizel;
252
253 TRACE("(file %s,start %d,extract %d\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons);
254
255 hFile = CreateFileW( lpszExeFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 );
256 if (hFile == INVALID_HANDLE_VALUE) return hRet;
257 fsizel = GetFileSize(hFile,&fsizeh);
258
259 /* Map the file */
260 fmapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL );
261 CloseHandle( hFile );
262 if (!fmapping)
263 {
264 WARN("CreateFileMapping error %ld\n", GetLastError() );
265 return hRet;
266 }
267
268 if ( !(peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0)))
269 {
270 WARN("MapViewOfFile error %ld\n", GetLastError() );
271 CloseHandle( fmapping );
272 return hRet;
273 }
274 CloseHandle( fmapping );
275
276 sig = USER32_GetResourceTable(peimage,fsizel,&pData);
277
278/* ico file */
279 if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
280 {
281 BYTE *pCIDir = 0;
282 NE_TYPEINFO *pTInfo = (NE_TYPEINFO*)(pData + 2);
283 NE_NAMEINFO *pIconStorage = NULL;
284 NE_NAMEINFO *pIconDir = NULL;
285 LPicoICONDIR lpiID = NULL;
286
287 TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
288
289 if( pData == (BYTE*)-1 )
290 {
291 /* FIXME: pCIDir is allocated on the heap - memory leak */
292 pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize); /* check for .ICO file */
293 if( pCIDir )
294 {
295 iconDirCount = 1; iconCount = lpiID->idCount;
296 TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
297 }
298 }
299 else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
300 {
301 if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON ) /* find icon directory and icon repository */
302 {
303 iconDirCount = pTInfo->count;
304 pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
305 TRACE("\tfound directory - %i icon families\n", iconDirCount);
306 }
307 if( pTInfo->type_id == NE_RSCTYPE_ICON )
308 {
309 iconCount = pTInfo->count;
310 pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
311 TRACE("\ttotal icons - %i\n", iconCount);
312 }
313 pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
314 }
315
316 if( (pIconStorage && pIconDir) || lpiID ) /* load resources and create icons */
317 {
318 if( nIcons == 0 )
319 {
320 hRet = iconDirCount;
321 }
322 else if( nIconIndex < iconDirCount )
323 {
324 UINT16 i, icon;
325 if( nIcons > iconDirCount - nIconIndex )
326 nIcons = iconDirCount - nIconIndex;
327
328 for( i = nIconIndex; i < nIconIndex + nIcons; i++ )
329 {
330 /* .ICO files have only one icon directory */
331 if( lpiID == NULL ) /* *.ico */
332 pCIDir = USER32_LoadResource( peimage, pIconDir + i, *(WORD*)pData, &uSize );
333 RetPtr[i-nIconIndex] = LookupIconIdFromDirectoryEx( pCIDir, TRUE, cxDesired, cyDesired, 0);
334 }
335
336 for( icon = nIconIndex; icon < nIconIndex + nIcons; icon++ )
337 {
338 pCIDir = NULL;
339 if( lpiID )
340 pCIDir = ICO_LoadIcon( peimage, lpiID->idEntries + RetPtr[icon-nIconIndex], &uSize);
341 else
342 for( i = 0; i < iconCount; i++ )
343 if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
344 pCIDir = USER32_LoadResource( peimage, pIconStorage + i,*(WORD*)pData, &uSize );
345
346 if( pCIDir )
347 RetPtr[icon-nIconIndex] = (HICON) CreateIconFromResourceEx(pCIDir,uSize,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
348 else
349 RetPtr[icon-nIconIndex] = 0;
350 }
351 hRet = S_OK;
352 }
353 }
354 }
355/* end ico file */
356
357/* exe/dll */
358 else if( sig == IMAGE_NT_SIGNATURE )
359 {
360 LPBYTE idata,igdata;
361 PIMAGE_DOS_HEADER dheader;
362 PIMAGE_NT_HEADERS pe_header;
363 PIMAGE_SECTION_HEADER pe_sections;
364 const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
365 const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
366 const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
367 int i,j;
368
369 dheader = (PIMAGE_DOS_HEADER)peimage;
370 pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew); /* it is a pe header, USER32_GetResourceTable checked that */
371 pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header)); /* probably makes problems with short PE headers...*/
372 rootresdir = NULL;
373
374 /* search for the root resource directory */
375 for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
376 {
377 if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
378 continue;
379 if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
380 FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
381 debugstr_w(lpszExeFileName),
382 pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
383 fsizel
384 );
385 goto end;
386 }
387 /* FIXME: doesn't work when the resources are not in a separate section */
388 if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
389 {
390 rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
391 break;
392 }
393 }
394
395 if (!rootresdir)
396 {
397 WARN("haven't found section for resource directory.\n");
398 goto end; /* failure */
399 }
400
401 /* search for the group icon directory */
402 if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICONW), rootresdir)))
403 {
404 WARN("No Icongroupresourcedirectory!\n");
405 goto end; /* failure */
406 }
407 iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
408
409 /* only number of icons requested */
410 if( nIcons == 0 )
411 {
412 hRet = iconDirCount;
413 goto end; /* success */
414 }
415
416 if( nIconIndex < 0 )
417 {
418 /* search resource id */
419 int n = 0;
420 int iId = abs(nIconIndex);
421 PIMAGE_RESOURCE_DIRECTORY_ENTRY xprdeTmp = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
422
423 while(n<iconDirCount && xprdeTmp)
424 {
425 if(xprdeTmp->u1.Id == iId)
426 {
427 nIconIndex = n;
428 break;
429 }
430 n++;
431 xprdeTmp++;
432 }
433 if (nIconIndex < 0)
434 {
435 WARN("resource id %d not found\n", iId);
436 goto end; /* failure */
437 }
438 }
439 else
440 {
441 /* check nIconIndex to be in range */
442 if (nIconIndex >= iconDirCount)
443 {
444 WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
445 goto end; /* failure */
446 }
447 }
448
449 /* assure we don't get too much */
450 if( nIcons > iconDirCount - nIconIndex )
451 nIcons = iconDirCount - nIconIndex;
452
453 /* starting from specified index */
454 xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1) + nIconIndex;
455
456 for (i=0; i < nIcons; i++,xresent++)
457 {
458 const IMAGE_RESOURCE_DIRECTORY *resdir;
459
460 /* go down this resource entry, name */
461 resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s3.OffsetToDirectory));
462
463 /* default language (0) */
464 resdir = find_entry_default(resdir,rootresdir);
465 igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
466
467 /* lookup address in mapped image for virtual address */
468 igdata = NULL;
469
470 for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
471 {
472 if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
473 continue;
474 if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
475 continue;
476
477 if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
478 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);
479 goto end; /* failure */
480 }
481 igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
482 }
483
484 if (!igdata)
485 {
486 FIXME("no matching real address for icongroup!\n");
487 goto end; /* failure */
488 }
489 RetPtr[i] = (HICON)LookupIconIdFromDirectoryEx(igdata, TRUE, cxDesired, cyDesired, LR_DEFAULTCOLOR);
490 }
491
492 if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICONW),rootresdir)))
493 {
494 WARN("No Iconresourcedirectory!\n");
495 goto end; /* failure */
496 }
497
498 for (i=0; i<nIcons; i++)
499 {
500 const IMAGE_RESOURCE_DIRECTORY *xresdir;
501 xresdir = find_entry_by_id(iconresdir,RetPtr[i],rootresdir);
502 xresdir = find_entry_default(xresdir,rootresdir);
503 idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
504 idata = NULL;
505
506 /* map virtual to address in image */
507 for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
508 {
509 if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
510 continue;
511 if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
512 continue;
513 idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
514 }
515 if (!idata)
516 {
517 WARN("no matching real address found for icondata!\n");
518 RetPtr[i]=0;
519 continue;
520 }
521 RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
522 }
523 hRet = S_OK; /* return first icon */
524 } /* if(sig == IMAGE_NT_SIGNATURE) */
525
526end: UnmapViewOfFile(peimage); /* success */
527 return hRet;
528}
529
530/***********************************************************************
531 * PrivateExtractIconsW [USER32.@]
532 *
533 * NOTES
534 * nIndex = 1: a small and a large icon are extracted.
535 * the higher word of sizeXY contains the size of the small icon, the lower
536 * word the size of the big icon. phicon points to HICON[2].
537 *
538 * RETURNS
539 * nIcons > 0: HRESULT
540 * nIcons = 0: the number of icons
541 */
542
543HRESULT WINAPI PrivateExtractIconsW (
544 LPCWSTR lpwstrFile,
545 int nIndex,
546 DWORD sizeX,
547 DWORD sizeY,
548 HICON * phicon, /* [???] NOTE: HICON* */
549 DWORD w, /* [in] NOTE: 0 */
550 UINT nIcons,
551 DWORD y ) /* [in] NOTE: 0x80 maybe LR_* constant */
552{
553 DWORD ret;
554 TRACE("%s 0x%08x 0x%08lx 0x%08lx %p 0x%08lx 0x%08x 0x%08lx\n",
555 debugstr_w(lpwstrFile),nIndex, sizeX ,sizeY ,phicon,w,nIcons,y );
556
557 if ((nIcons == 2) && HIWORD(sizeX) && HIWORD(sizeY))
558 {
559 ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, 1, sizeX & 0xffff, sizeY & 0xffff );
560 if (!SUCCEEDED(ret)) return ret;
561 ret = ICO_ExtractIconExW(lpwstrFile, phicon+1, nIndex, 1, (sizeX>>16) & 0xffff, (sizeY>>16) & 0xffff );
562 } else
563 ret = ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX & 0xffff, sizeY & 0xffff );
564 return ret;
565}
566
567/***********************************************************************
568 * PrivateExtractIconsA [USER32.@]
569 */
570
571HRESULT WINAPI PrivateExtractIconsA (
572 LPCSTR lpstrFile,
573 INT nIndex,
574 DWORD sizeX,
575 DWORD sizeY,
576 HICON * phicon,
577 DWORD w, /* [in] NOTE: 0 */
578 UINT nIcons,
579 DWORD y ) /* [in] NOTE: 0x80 */
580{
581 DWORD ret;
582 INT len = MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, NULL, 0 );
583 LPWSTR lpwstrFile = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
584
585 MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, lpwstrFile, len );
586 ret = PrivateExtractIconsW(
587 lpwstrFile, nIndex, sizeX, sizeY, phicon, w, nIcons, y
588 );
589
590 HeapFree(GetProcessHeap(), 0, lpwstrFile);
591 return ret;
592}
593
594/***********************************************************************
595 * PrivateExtractIconExW [USER32.@]
596 * NOTES
597 * if nIcons = -1 it returns the number of icons in any case !!!
598 */
599HRESULT WINAPI PrivateExtractIconExW (
600 LPCWSTR lpwstrFile,
601 DWORD nIndex,
602 HICON * phIconLarge,
603 HICON * phIconSmall,
604 UINT nIcons )
605{
606 DWORD cyicon, cysmicon, cxicon, cxsmicon;
607 HRESULT ret = 0;
608
609 TRACE("%s 0x%08lx %p %p 0x%08x\n",
610 debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
611
612 if (nIndex == 1 && phIconSmall && phIconLarge)
613 {
614 HICON hIcon[2];
615 cxicon = GetSystemMetrics(SM_CXICON);
616 cyicon = GetSystemMetrics(SM_CYICON);
617 cxsmicon = GetSystemMetrics(SM_CXSMICON);
618 cysmicon = GetSystemMetrics(SM_CYSMICON);
619
620 ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon | (cxsmicon<<16), cyicon | (cysmicon<<16),
621 (HICON*) &hIcon, 0, 2, 0 );
622 *phIconLarge = hIcon[0];
623 *phIconSmall = hIcon[1];
624 return ret;
625 }
626
627 if (nIndex != -1)
628 {
629 if (phIconSmall)
630 {
631 /* extract n small icons */
632 cxsmicon = GetSystemMetrics(SM_CXSMICON);
633 cysmicon = GetSystemMetrics(SM_CYSMICON);
634 ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxsmicon, cysmicon, phIconSmall, 0, nIcons, 0 );
635 }
636 if (phIconLarge )
637 {
638 /* extract n large icons */
639 cxicon = GetSystemMetrics(SM_CXICON);
640 cyicon = GetSystemMetrics(SM_CYICON);
641 ret = PrivateExtractIconsW ( lpwstrFile, nIndex, cxicon, cyicon, phIconLarge, 0, nIcons, 0 );
642 }
643 return ret;
644 }
645
646 /* get the number of icons */
647 return PrivateExtractIconsW ( lpwstrFile, 0, 0, 0, 0, 0, 0, 0 );
648}
649
650/***********************************************************************
651 * PrivateExtractIconExA [USER32.@]
652 */
653HRESULT WINAPI PrivateExtractIconExA (
654 LPCSTR lpstrFile,
655 DWORD nIndex,
656 HICON * phIconLarge,
657 HICON * phIconSmall,
658 UINT nIcons )
659{
660 DWORD ret;
661 INT len = MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, NULL, 0 );
662 LPWSTR lpwstrFile = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
663
664 TRACE("%s 0x%08lx %p %p 0x%08x\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
665
666 MultiByteToWideChar( CP_ACP, 0, lpstrFile, -1, lpwstrFile, len );
667 ret = PrivateExtractIconExW(lpwstrFile,nIndex,phIconLarge, phIconSmall, nIcons);
668 HeapFree(GetProcessHeap(), 0, lpwstrFile);
669 return ret;
670}
671
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