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Sweden-Number/dlls/user/exticon.c

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/*
* icon extracting
*
* taken and slightly changed from shell
* this should replace the icon extraction code in shell32 and shell16 once
* it needs a serious test for compliance with the native API
*
* Copyright 2000 Juergen Schmied
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h> /* abs() */
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wingdi.h"
#include "winuser.h"
#include "wine/winbase16.h"
#include "cursoricon.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(icon);
#include "pshpack1.h"
typedef struct
{
BYTE bWidth; /* Width, in pixels, of the image */
BYTE bHeight; /* Height, in pixels, of the image */
BYTE bColorCount; /* Number of colors in image (0 if >=8bpp) */
BYTE bReserved; /* Reserved ( must be 0) */
WORD wPlanes; /* Color Planes */
WORD wBitCount; /* Bits per pixel */
DWORD dwBytesInRes; /* How many bytes in this resource? */
DWORD dwImageOffset; /* Where in the file is this image? */
} icoICONDIRENTRY, *LPicoICONDIRENTRY;
typedef struct
{
WORD idReserved; /* Reserved (must be 0) */
WORD idType; /* Resource Type (RES_ICON or RES_CURSOR) */
WORD idCount; /* How many images */
icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
} icoICONDIR, *LPicoICONDIR;
#include "poppack.h"
#if 0
static void dumpIcoDirEnty ( LPicoICONDIRENTRY entry )
{
TRACE("width = 0x%08x height = 0x%08x\n", entry->bWidth, entry->bHeight);
TRACE("colors = 0x%08x planes = 0x%08x\n", entry->bColorCount, entry->wPlanes);
TRACE("bitcount = 0x%08x bytesinres = 0x%08lx offset = 0x%08lx\n",
entry->wBitCount, entry->dwBytesInRes, entry->dwImageOffset);
}
static void dumpIcoDir ( LPicoICONDIR entry )
{
TRACE("type = 0x%08x count = 0x%08x\n", entry->idType, entry->idCount);
}
#endif
/**********************************************************************
* find_entry_by_id
*
* Find an entry by id in a resource directory
* Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
WORD id, const void *root )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
int min, max, pos;
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
min = dir->NumberOfNamedEntries;
max = min + dir->NumberOfIdEntries - 1;
while (min <= max)
{
pos = (min + max) / 2;
if (entry[pos].u1.s2.Id == id)
return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
if (entry[pos].u1.s2.Id > id) max = pos - 1;
else min = pos + 1;
}
return NULL;
}
/**********************************************************************
* find_entry_default
*
* Find a default entry in a resource directory
* Copied from loader/pe_resource.c (FIXME: should use exported resource functions)
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
const void *root )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
}
/*************************************************************************
* USER32_GetResourceTable
*/
static DWORD USER32_GetResourceTable(LPBYTE peimage,DWORD pesize,LPBYTE *retptr)
{
IMAGE_DOS_HEADER * mz_header;
TRACE("%p %p\n", peimage, retptr);
*retptr = NULL;
mz_header = (IMAGE_DOS_HEADER*) peimage;
if (mz_header->e_magic != IMAGE_DOS_SIGNATURE)
{
if (mz_header->e_cblp == 1) /* .ICO file ? */
{
*retptr = (LPBYTE)-1; /* ICONHEADER.idType, must be 1 */
return 1;
}
else
return 0; /* failed */
}
if (mz_header->e_lfanew >= pesize) {
return 0; /* failed, happens with PKZIP DOS Exes for instance. */
}
if (*((DWORD*)(peimage + mz_header->e_lfanew)) == IMAGE_NT_SIGNATURE )
return IMAGE_NT_SIGNATURE;
if (*((WORD*)(peimage + mz_header->e_lfanew)) == IMAGE_OS2_SIGNATURE )
{
IMAGE_OS2_HEADER * ne_header;
ne_header = (IMAGE_OS2_HEADER*)(peimage + mz_header->e_lfanew);
if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE)
return 0;
if( (ne_header->ne_restab - ne_header->ne_rsrctab) <= sizeof(NE_TYPEINFO) )
*retptr = (LPBYTE)-1;
else
*retptr = peimage + mz_header->e_lfanew + ne_header->ne_rsrctab;
return IMAGE_OS2_SIGNATURE;
}
return 0; /* failed */
}
/*************************************************************************
* USER32_LoadResource
*/
static BYTE * USER32_LoadResource( LPBYTE peimage, NE_NAMEINFO* pNInfo, WORD sizeShift, ULONG *uSize)
{
TRACE("%p %p 0x%08x\n", peimage, pNInfo, sizeShift);
*uSize = (DWORD)pNInfo->length << sizeShift;
return peimage + ((DWORD)pNInfo->offset << sizeShift);
}
/*************************************************************************
* ICO_LoadIcon
*/
static BYTE * ICO_LoadIcon( LPBYTE peimage, LPicoICONDIRENTRY lpiIDE, ULONG *uSize)
{
TRACE("%p %p\n", peimage, lpiIDE);
*uSize = lpiIDE->dwBytesInRes;
return peimage + lpiIDE->dwImageOffset;
}
/*************************************************************************
* ICO_GetIconDirectory
*
* Reads .ico file and build phony ICONDIR struct
* see http://www.microsoft.com/win32dev/ui/icons.htm
*/
#define HEADER_SIZE (sizeof(CURSORICONDIR) - sizeof (CURSORICONDIRENTRY))
#define HEADER_SIZE_FILE (sizeof(icoICONDIR) - sizeof (icoICONDIRENTRY))
static BYTE * ICO_GetIconDirectory( LPBYTE peimage, LPicoICONDIR* lplpiID, ULONG *uSize )
{
CURSORICONDIR * lpcid; /* icon resource in resource-dir format */
CURSORICONDIR * lpID; /* icon resource in resource format */
int i;
TRACE("%p %p\n", peimage, lplpiID);
lpcid = (CURSORICONDIR*)peimage;
if( lpcid->idReserved || (lpcid->idType != 1) || (!lpcid->idCount) )
return 0;
/* allocate the phony ICONDIR structure */
*uSize = lpcid->idCount * sizeof(CURSORICONDIRENTRY) + HEADER_SIZE;
if( (lpID = (CURSORICONDIR*)HeapAlloc(GetProcessHeap(),0, *uSize) ))
{
/* copy the header */
lpID->idReserved = lpcid->idReserved;
lpID->idType = lpcid->idType;
lpID->idCount = lpcid->idCount;
/* copy the entries */
for( i=0; i < lpcid->idCount; i++ )
{
memcpy((void*)&(lpID->idEntries[i]),(void*)&(lpcid->idEntries[i]), sizeof(CURSORICONDIRENTRY) - 2);
lpID->idEntries[i].wResId = i;
}
*lplpiID = (LPicoICONDIR)peimage;
return (BYTE *)lpID;
}
return 0;
}
/*************************************************************************
* ICO_ExtractIconExW [internal]
*
* NOTES
* nIcons = 0: returns number of Icons in file
*
* returns
* invalid file: -1
* failure:0;
* success: number of icons in file (nIcons = 0) or nr of icons retrieved
*/
static UINT ICO_ExtractIconExW(
LPCWSTR lpszExeFileName,
HICON * RetPtr,
INT nIconIndex,
UINT nIcons,
UINT cxDesired,
UINT cyDesired,
UINT *pIconId,
UINT flags)
{
UINT ret = 0;
UINT cx1, cx2, cy1, cy2;
LPBYTE pData;
DWORD sig;
HANDLE hFile;
UINT16 iconDirCount = 0,iconCount = 0;
LPBYTE peimage;
HANDLE fmapping;
ULONG uSize;
DWORD fsizeh,fsizel;
WCHAR szExePath[MAX_PATH];
DWORD dwSearchReturn;
TRACE("%s, %d, %d %p 0x%08x\n", debugstr_w(lpszExeFileName), nIconIndex, nIcons, pIconId, flags);
dwSearchReturn = SearchPathW(NULL, lpszExeFileName, NULL, sizeof(szExePath) / sizeof(szExePath[0]), szExePath, NULL);
if ((dwSearchReturn == 0) || (dwSearchReturn > sizeof(szExePath) / sizeof(szExePath[0])))
{
WARN("File %s not found or path too long\n", debugstr_w(lpszExeFileName));
return -1;
}
hFile = CreateFileW(szExePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
if (hFile == INVALID_HANDLE_VALUE) return ret;
fsizel = GetFileSize(hFile,&fsizeh);
/* Map the file */
fmapping = CreateFileMappingW(hFile, NULL, PAGE_READONLY | SEC_COMMIT, 0, 0, NULL);
CloseHandle(hFile);
if (!fmapping)
{
WARN("CreateFileMapping error %ld\n", GetLastError() );
return 0xFFFFFFFF;
}
if (!(peimage = MapViewOfFile(fmapping, FILE_MAP_READ, 0, 0, 0)))
{
WARN("MapViewOfFile error %ld\n", GetLastError() );
CloseHandle(fmapping);
return 0xFFFFFFFF;
}
CloseHandle(fmapping);
cx1 = LOWORD(cxDesired);
cx2 = HIWORD(cxDesired) ? HIWORD(cxDesired) : cx1;
cy1 = LOWORD(cyDesired);
cy2 = HIWORD(cyDesired) ? HIWORD(cyDesired) : cy1;
if (pIconId) /* Invalidate first icon identifier */
*pIconId = 0xFFFFFFFF;
if (!pIconId) /* if no icon identifier array present use the icon handle array as intermediate storage */
pIconId = (UINT*)RetPtr;
sig = USER32_GetResourceTable(peimage, fsizel, &pData);
/* ico file or NE exe/dll*/
if (sig==IMAGE_OS2_SIGNATURE || sig==1) /* .ICO file */
{
BYTE *pCIDir = 0;
NE_TYPEINFO *pTInfo = (NE_TYPEINFO*)(pData + 2);
NE_NAMEINFO *pIconStorage = NULL;
NE_NAMEINFO *pIconDir = NULL;
LPicoICONDIR lpiID = NULL;
TRACE("-- OS2/icon Signature (0x%08lx)\n", sig);
if (pData == (BYTE*)-1)
{
pCIDir = ICO_GetIconDirectory(peimage, &lpiID, &uSize); /* check for .ICO file */
if (pCIDir)
{
iconDirCount = 1; iconCount = lpiID->idCount;
TRACE("-- icon found %p 0x%08lx 0x%08x 0x%08x\n", pCIDir, uSize, iconDirCount, iconCount);
}
}
else while (pTInfo->type_id && !(pIconStorage && pIconDir))
{
if (pTInfo->type_id == NE_RSCTYPE_GROUP_ICON) /* find icon directory and icon repository */
{
iconDirCount = pTInfo->count;
pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
TRACE("\tfound directory - %i icon families\n", iconDirCount);
}
if (pTInfo->type_id == NE_RSCTYPE_ICON)
{
iconCount = pTInfo->count;
pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
TRACE("\ttotal icons - %i\n", iconCount);
}
pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
}
if ((pIconStorage && pIconDir) || lpiID) /* load resources and create icons */
{
if (nIcons == 0)
{
ret = iconDirCount;
if (lpiID && pCIDir) /* *.ico file, deallocate heap pointer*/
HeapFree(GetProcessHeap(), 0, pCIDir);
}
else if (nIconIndex < iconDirCount)
{
UINT16 i, icon;
if (nIcons > iconDirCount - nIconIndex)
nIcons = iconDirCount - nIconIndex;
for (i = 0; i < nIcons; i++)
{
/* .ICO files have only one icon directory */
if (lpiID == NULL) /* not *.ico */
pCIDir = USER32_LoadResource(peimage, pIconDir + i + nIconIndex, *(WORD*)pData, &uSize);
pIconId[i] = LookupIconIdFromDirectoryEx(pCIDir, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
}
if (lpiID && pCIDir) /* *.ico file, deallocate heap pointer*/
HeapFree(GetProcessHeap(), 0, pCIDir);
for (icon = 0; icon < nIcons; icon++)
{
pCIDir = NULL;
if (lpiID)
pCIDir = ICO_LoadIcon(peimage, lpiID->idEntries + (int)pIconId[icon], &uSize);
else
for (i = 0; i < iconCount; i++)
if (pIconStorage[i].id == ((int)pIconId[icon] | 0x8000) )
pCIDir = USER32_LoadResource(peimage, pIconStorage + i, *(WORD*)pData, &uSize);
if (pCIDir)
RetPtr[icon] = (HICON)CreateIconFromResourceEx(pCIDir, uSize, TRUE, 0x00030000,
(icon & 1) ? cx2 : cx1, (icon & 1) ? cy2 : cy1, flags);
else
RetPtr[icon] = 0;
}
ret = icon; /* return number of retrieved icons */
}
}
}
/* end ico file */
/* exe/dll */
else if( sig == IMAGE_NT_SIGNATURE )
{
LPBYTE idata,igdata;
PIMAGE_DOS_HEADER dheader;
PIMAGE_NT_HEADERS pe_header;
PIMAGE_SECTION_HEADER pe_sections;
const IMAGE_RESOURCE_DIRECTORY *rootresdir,*iconresdir,*icongroupresdir;
const IMAGE_RESOURCE_DATA_ENTRY *idataent,*igdataent;
const IMAGE_RESOURCE_DIRECTORY_ENTRY *xresent;
UINT i, j;
dheader = (PIMAGE_DOS_HEADER)peimage;
pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew); /* it is a pe header, USER32_GetResourceTable checked that */
pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header) + sizeof(DWORD) + sizeof(IMAGE_FILE_HEADER)
+ pe_header->FileHeader.SizeOfOptionalHeader);
rootresdir = NULL;
/* search for the root resource directory */
for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
{
if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
continue;
if (fsizel < pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData) {
FIXME("File %s too short (section is at %ld bytes, real size is %ld)\n",
debugstr_w(lpszExeFileName),
pe_sections[i].PointerToRawData+pe_sections[i].SizeOfRawData,
fsizel
);
goto end;
}
/* FIXME: doesn't work when the resources are not in a separate section */
if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
{
rootresdir = (PIMAGE_RESOURCE_DIRECTORY)(peimage+pe_sections[i].PointerToRawData);
break;
}
}
if (!rootresdir)
{
WARN("haven't found section for resource directory.\n");
goto end; /* failure */
}
/* search for the group icon directory */
if (!(icongroupresdir = find_entry_by_id(rootresdir, LOWORD(RT_GROUP_ICONW), rootresdir)))
{
WARN("No Icongroupresourcedirectory!\n");
goto end; /* failure */
}
iconDirCount = icongroupresdir->NumberOfNamedEntries + icongroupresdir->NumberOfIdEntries;
/* only number of icons requested */
if( nIcons == 0 )
{
ret = iconDirCount;
goto end; /* success */
}
if( nIconIndex < 0 )
{
/* search resource id */
int n = 0;
int iId = abs(nIconIndex);
PIMAGE_RESOURCE_DIRECTORY_ENTRY xprdeTmp = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
while(n<iconDirCount && xprdeTmp)
{
if(xprdeTmp->u1.s2.Id == iId)
{
nIconIndex = n;
break;
}
n++;
xprdeTmp++;
}
if (nIconIndex < 0)
{
WARN("resource id %d not found\n", iId);
goto end; /* failure */
}
}
else
{
/* check nIconIndex to be in range */
if (nIconIndex >= iconDirCount)
{
WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
goto end; /* failure */
}
}
/* assure we don't get too much */
if( nIcons > iconDirCount - nIconIndex )
nIcons = iconDirCount - nIconIndex;
/* starting from specified index */
xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1) + nIconIndex;
for (i=0; i < nIcons; i++,xresent++)
{
const IMAGE_RESOURCE_DIRECTORY *resdir;
/* go down this resource entry, name */
resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s3.OffsetToDirectory));
/* default language (0) */
resdir = find_entry_default(resdir,rootresdir);
igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
/* lookup address in mapped image for virtual address */
igdata = NULL;
for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
{
if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
continue;
if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
continue;
if (igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData+igdataent->Size > fsizel) {
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);
goto end; /* failure */
}
igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
}
if (!igdata)
{
FIXME("no matching real address for icongroup!\n");
goto end; /* failure */
}
pIconId[i] = LookupIconIdFromDirectoryEx(igdata, TRUE, (i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
}
if (!(iconresdir=find_entry_by_id(rootresdir,LOWORD(RT_ICONW),rootresdir)))
{
WARN("No Iconresourcedirectory!\n");
goto end; /* failure */
}
for (i=0; i<nIcons; i++)
{
const IMAGE_RESOURCE_DIRECTORY *xresdir;
xresdir = find_entry_by_id(iconresdir, LOWORD(pIconId[i]), rootresdir);
xresdir = find_entry_default(xresdir, rootresdir);
idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
idata = NULL;
/* map virtual to address in image */
for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
{
if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
continue;
if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
continue;
idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
}
if (!idata)
{
WARN("no matching real address found for icondata!\n");
RetPtr[i]=0;
continue;
}
RetPtr[i] = (HICON) CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000,
(i & 1) ? cx2 : cx1, (i & 1) ? cy2 : cy1, flags);
}
ret = i; /* return number of retrieved icons */
} /* if(sig == IMAGE_NT_SIGNATURE) */
end:
UnmapViewOfFile(peimage); /* success */
return ret;
}
/***********************************************************************
* PrivateExtractIconsW [USER32.@]
*
* NOTES
* If HIWORD(sizeX) && HIWORD(sizeY) 2 * ((nIcons + 1) MOD 2) icons are
* returned, with the LOWORD size icon first and the HIWORD size icon
* second.
* Also the Windows equivalent does extract icons in a strange way if
* nIndex is negative. Our implementation treats a negative nIndex as
* looking for that resource identifier for the first icon to retrieve.
*
* FIXME:
* should also support 16 bit EXE + DLLs, cursor and animated cursor as
* well as bitmap files.
*/
UINT WINAPI PrivateExtractIconsW (
LPCWSTR lpwstrFile,
int nIndex,
int sizeX,
int sizeY,
HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
UINT* pIconId, /* [out] pointer to array of nIcons icon identifiers or NULL */
UINT nIcons, /* [in] number of icons to retrieve */
UINT flags ) /* [in] LR_* flags used by LoadImage */
{
TRACE("%s %d %dx%d %p %p %d 0x%08x\n",
debugstr_w(lpwstrFile), nIndex, sizeX, sizeY, phicon, pIconId, nIcons, flags);
if ((nIcons & 1) && HIWORD(sizeX) && HIWORD(sizeY))
{
WARN("Uneven number %d of icons requested for small and large icons!", nIcons);
}
return ICO_ExtractIconExW(lpwstrFile, phicon, nIndex, nIcons, sizeX, sizeY, pIconId, flags);
}
/***********************************************************************
* PrivateExtractIconsA [USER32.@]
*/
UINT WINAPI PrivateExtractIconsA (
LPCSTR lpstrFile,
int nIndex,
int sizeX,
int sizeY,
HICON * phicon, /* [out] pointer to array of nIcons HICON handles */
UINT* piconid, /* [out] pointer to array of nIcons icon identifiers or NULL */
UINT nIcons, /* [in] number of icons to retrieve */
UINT flags ) /* [in] LR_* flags used by LoadImage */
{
UINT ret;
INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
ret = PrivateExtractIconsW(lpwstrFile, nIndex, sizeX, sizeY, phicon, piconid, nIcons, flags);
HeapFree(GetProcessHeap(), 0, lpwstrFile);
return ret;
}
/***********************************************************************
* PrivateExtractIconExW [USER32.@]
* NOTES
* if nIndex == -1 it returns the number of icons in any case !!!
*/
UINT WINAPI PrivateExtractIconExW (
LPCWSTR lpwstrFile,
int nIndex,
HICON * phIconLarge,
HICON * phIconSmall,
UINT nIcons )
{
DWORD cyicon, cysmicon, cxicon, cxsmicon;
UINT ret = 0;
TRACE("%s %d %p %p %d\n",
debugstr_w(lpwstrFile),nIndex,phIconLarge, phIconSmall, nIcons);
if (nIndex == -1)
/* get the number of icons */
return ICO_ExtractIconExW(lpwstrFile, NULL, 0, 0, 0, 0, NULL, LR_DEFAULTCOLOR);
if (nIcons == 1 && phIconSmall && phIconLarge)
{
HICON hIcon[2];
cxicon = GetSystemMetrics(SM_CXICON);
cyicon = GetSystemMetrics(SM_CYICON);
cxsmicon = GetSystemMetrics(SM_CXSMICON);
cysmicon = GetSystemMetrics(SM_CYSMICON);
ret = ICO_ExtractIconExW(lpwstrFile, (HICON*) &hIcon, nIndex, 2, cxicon | (cxsmicon<<16),
cyicon | (cysmicon<<16), NULL, LR_DEFAULTCOLOR);
*phIconLarge = hIcon[0];
*phIconSmall = hIcon[1];
return ret;
}
if (phIconSmall)
{
/* extract n small icons */
cxsmicon = GetSystemMetrics(SM_CXSMICON);
cysmicon = GetSystemMetrics(SM_CYSMICON);
ret = ICO_ExtractIconExW(lpwstrFile, phIconSmall, nIndex, nIcons, cxsmicon,
cysmicon, NULL, LR_DEFAULTCOLOR);
}
if (phIconLarge)
{
/* extract n large icons */
cxicon = GetSystemMetrics(SM_CXICON);
cyicon = GetSystemMetrics(SM_CYICON);
ret = ICO_ExtractIconExW(lpwstrFile, phIconLarge, nIndex, nIcons, cxicon,
cyicon, NULL, LR_DEFAULTCOLOR);
}
return ret;
}
/***********************************************************************
* PrivateExtractIconExA [USER32.@]
*/
UINT WINAPI PrivateExtractIconExA (
LPCSTR lpstrFile,
int nIndex,
HICON * phIconLarge,
HICON * phIconSmall,
UINT nIcons )
{
UINT ret;
INT len = MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, NULL, 0);
LPWSTR lpwstrFile = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
TRACE("%s %d %p %p %d\n", lpstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
MultiByteToWideChar(CP_ACP, 0, lpstrFile, -1, lpwstrFile, len);
ret = PrivateExtractIconExW(lpwstrFile, nIndex, phIconLarge, phIconSmall, nIcons);
HeapFree(GetProcessHeap(), 0, lpwstrFile);
return ret;
}
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