New file, some helper functions for icon cache.

dlls/shell32/iconcache.c

+/*
+ *	shell icon cache (SIC)
+ *
+ *
+ */
+#include <string.h>
+#include "windows.h"
+#include "neexe.h"
+#include "cursoricon.h"
+#include "module.h"
+#include "heap.h"
+#include "debug.h"
+#include "sysmetrics.h"
+#include "winversion.h"
+#include "shell.h"
+#include "shlobj.h"
+#include "pidl.h"
+#include "shell32_main.h"
+
+#pragma pack(1)
+
+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 (1 for icons)	*/
+    WORD            idCount;      /* How many images?			*/
+    icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
+} icoICONDIR, *LPicoICONDIR;
+
+#pragma pack(4)
+
+/*************************************************************************
+ *				SHELL_GetResourceTable
+ */
+static DWORD SHELL_GetResourceTable(HFILE32 hFile,LPBYTE *retptr)
+{	IMAGE_DOS_HEADER	mz_header;
+	char			magic[4];
+	int			size;
+
+	TRACE(shell,"\n");  
+
+	*retptr = NULL;
+	_llseek32( hFile, 0, SEEK_SET );
+	if ((_lread32(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) || (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 */
+	}
+	_llseek32( hFile, mz_header.e_lfanew, SEEK_SET );
+
+	if (_lread32( hFile, magic, sizeof(magic) ) != sizeof(magic))
+	  return 0;
+
+	_llseek32( hFile, mz_header.e_lfanew, SEEK_SET);
+
+	if (*(DWORD*)magic  == IMAGE_NT_SIGNATURE)
+	  return IMAGE_NT_SIGNATURE;
+
+	if (*(WORD*)magic == IMAGE_OS2_SIGNATURE)
+	{ IMAGE_OS2_HEADER	ne_header;
+	  LPBYTE		pTypeInfo = (LPBYTE)-1;
+
+	  if (_lread32(hFile,&ne_header,sizeof(ne_header))!=sizeof(ne_header))
+	    return 0;
+
+	  if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE)
+	    return 0;
+
+	  size = ne_header.rname_tab_offset - ne_header.resource_tab_offset;
+
+	  if( size > sizeof(NE_TYPEINFO) )
+	  { pTypeInfo = (BYTE*)HeapAlloc( GetProcessHeap(), 0, size);
+	    if( pTypeInfo ) 
+	    { _llseek32(hFile, mz_header.e_lfanew+ne_header.resource_tab_offset, SEEK_SET);
+	      if( _lread32( hFile, (char*)pTypeInfo, size) != size )
+	      { HeapFree( GetProcessHeap(), 0, pTypeInfo); 
+		pTypeInfo = NULL;
+	      }
+	    }
+	  }
+	  *retptr = pTypeInfo;
+	  return IMAGE_OS2_SIGNATURE;
+	}
+  	return 0; /* failed */
+}
+/*************************************************************************
+ *			SHELL_LoadResource
+ */
+static HGLOBAL16 SHELL_LoadResource(HINSTANCE32 hInst, HFILE32 hFile, NE_NAMEINFO* pNInfo, WORD sizeShift)
+{	BYTE*  ptr;
+	HGLOBAL16 handle = DirectResAlloc( hInst, 0x10, (DWORD)pNInfo->length << sizeShift);
+
+	TRACE(shell,"\n");
+
+	if( (ptr = (BYTE*)GlobalLock16( handle )) )
+	{ _llseek32( hFile, (DWORD)pNInfo->offset << sizeShift, SEEK_SET);
+	  _lread32( hFile, (char*)ptr, pNInfo->length << sizeShift);
+	  return handle;
+	}
+	return 0;
+}
+
+/*************************************************************************
+ *                      ICO_LoadIcon
+ */
+static HGLOBAL16 ICO_LoadIcon(HINSTANCE32 hInst, HFILE32 hFile, LPicoICONDIRENTRY lpiIDE)
+{	BYTE*  ptr;
+	HGLOBAL16 handle = DirectResAlloc( hInst, 0x10, lpiIDE->dwBytesInRes);
+	TRACE(shell,"\n");
+	if( (ptr = (BYTE*)GlobalLock16( handle )) )
+	{ _llseek32( hFile, lpiIDE->dwImageOffset, SEEK_SET);
+	  _lread32( hFile, (char*)ptr, lpiIDE->dwBytesInRes);
+	  return handle;
+	}
+	return 0;
+}
+
+/*************************************************************************
+ *                      ICO_GetIconDirectory
+ *
+ *  Read .ico file and build phony ICONDIR struct for GetIconID
+ */
+static HGLOBAL16 ICO_GetIconDirectory(HINSTANCE32 hInst, HFILE32 hFile, LPicoICONDIR* lplpiID ) 
+{	WORD    id[3];  /* idReserved, idType, idCount */
+	LPicoICONDIR	lpiID;
+	int		i;
+ 
+	TRACE(shell,"\n"); 
+	_llseek32( hFile, 0, SEEK_SET );
+	if( _lread32(hFile,(char*)id,sizeof(id)) != sizeof(id) ) 
+	  return 0;
+
+	/* check .ICO header 
+	*
+	* - see http://www.microsoft.com/win32dev/ui/icons.htm
+	*/
+
+	if( id[0] || id[1] != 1 || !id[2] ) 
+	  return 0;
+
+	i = id[2]*sizeof(icoICONDIRENTRY) + sizeof(id);
+
+	lpiID = (LPicoICONDIR)HeapAlloc( GetProcessHeap(), 0, i);
+
+	if( _lread32(hFile,(char*)lpiID->idEntries,i) == i )
+	{ HGLOBAL16 handle = DirectResAlloc( hInst, 0x10,id[2]*sizeof(ICONDIRENTRY) + sizeof(id) );
+	  if( handle ) 
+	  { CURSORICONDIR*     lpID = (CURSORICONDIR*)GlobalLock16( handle );
+	    lpID->idReserved = lpiID->idReserved = id[0];
+	    lpID->idType = lpiID->idType = id[1];
+	    lpID->idCount = lpiID->idCount = id[2];
+	    for( i=0; i < lpiID->idCount; i++ )
+	    { memcpy((void*)(lpID->idEntries + i),(void*)(lpiID->idEntries + i), sizeof(ICONDIRENTRY) - 2);
+	      lpID->idEntries[i].icon.wResId = i;
+            }
+	    *lplpiID = lpiID;
+	    return handle;
+	  }
+	}
+	/* fail */
+
+	HeapFree( GetProcessHeap(), 0, lpiID);
+	return 0;
+}
+
+/*************************************************************************
+ *			InternalExtractIcon		[SHELL.39]
+ *
+ * This abortion is called directly by Progman
+ *  fixme: the icon section is broken (don't have a handle for
+ *    ICO_GetIconDirectory....)
+ *
+ */
+#define ICO_INVALID_FILE	1
+#define ICO_NO_ICONS		0
+
+HGLOBAL32 WINAPI ICO_ExtractIconEx(LPCSTR lpszExeFileName, HICON32* RetPtr, UINT32 nIconIndex, UINT32 n, UINT32 cxDesired, UINT32 cyDesired )
+{	HGLOBAL32	hRet = ICO_NO_ICONS;
+	LPBYTE		pData;
+	OFSTRUCT	ofs;
+	DWORD		sig;
+	HFILE32		hFile = OpenFile32( lpszExeFileName, &ofs, OF_READ );
+	UINT16		iconDirCount = 0,iconCount = 0;
+	LPBYTE		peimage;
+	HANDLE32	fmapping;
+	
+	TRACE(shell,"(file %s,start %d,extract %d\n", lpszExeFileName, nIconIndex, n);
+
+	if( hFile == HFILE_ERROR32 || !n )
+	  return ICO_INVALID_FILE;
+
+	sig = SHELL_GetResourceTable(hFile,&pData);
+
+/* ico file */
+	if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
+	{ HICON16	hIcon = 0;
+	  NE_TYPEINFO*	pTInfo = (NE_TYPEINFO*)(pData + 2);
+	  NE_NAMEINFO*	pIconStorage = NULL;
+	  NE_NAMEINFO*	pIconDir = NULL;
+	  LPicoICONDIR	lpiID = NULL;
+ 
+	  if( pData == (BYTE*)-1 )
+	  { hIcon = ICO_GetIconDirectory(0, hFile, &lpiID);	/* check for .ICO file */
+	    if( hIcon ) 
+	    { iconDirCount = 1; iconCount = lpiID->idCount; 
+	    }
+	  }
+	  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(shell,"\tfound directory - %i icon families\n", iconDirCount);
+	    }
+	    if( pTInfo->type_id == NE_RSCTYPE_ICON ) 
+	    { iconCount = pTInfo->count;
+	      pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
+	      TRACE(shell,"\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( nIconIndex == (UINT16)-1 )
+	    { RetPtr[0] = iconDirCount;
+	    }
+	    else if( nIconIndex < iconDirCount )
+	    { UINT16   i, icon;
+	      if( n > iconDirCount - nIconIndex ) 
+	        n = iconDirCount - nIconIndex;
+
+	      for( i = nIconIndex; i < nIconIndex + n; i++ ) 
+	      { /* .ICO files have only one icon directory */
+
+	        if( lpiID == NULL )
+	          hIcon = SHELL_LoadResource( 0, hFile, pIconDir + i, *(WORD*)pData );
+	        RetPtr[i-nIconIndex] = GetIconID( hIcon, 3 );
+	        GlobalFree16(hIcon); 
+              }
+
+	      for( icon = nIconIndex; icon < nIconIndex + n; icon++ )
+	      { hIcon = 0;
+	        if( lpiID )
+	        { hIcon = ICO_LoadIcon( 0, hFile, lpiID->idEntries + RetPtr[icon-nIconIndex]);
+	        }
+	        else
+	        { for( i = 0; i < iconCount; i++ )
+	          { if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
+	            { hIcon = SHELL_LoadResource( 0, hFile, pIconStorage + i,*(WORD*)pData );
+	            }
+	          }
+	        }
+	        if( hIcon )
+	        { RetPtr[icon-nIconIndex] = LoadIconHandler( hIcon, TRUE ); 
+	        }
+	        else
+	        { RetPtr[icon-nIconIndex] = 0;
+	        }
+	      }
+	    }
+	  }
+	  if( lpiID ) 
+	    HeapFree( GetProcessHeap(), 0, lpiID);
+	  else 
+	    HeapFree( GetProcessHeap(), 0, pData);
+	} 
+/* end ico file */
+
+/* exe/dll */
+	if( sig == IMAGE_NT_SIGNATURE)
+	{ LPBYTE		idata,igdata;
+	  PIMAGE_DOS_HEADER	dheader;
+	  PIMAGE_NT_HEADERS	pe_header;
+	  PIMAGE_SECTION_HEADER	pe_sections;
+	  PIMAGE_RESOURCE_DIRECTORY	rootresdir,iconresdir,icongroupresdir;
+	  PIMAGE_RESOURCE_DATA_ENTRY	idataent,igdataent;
+	  PIMAGE_RESOURCE_DIRECTORY_ENTRY	xresent;
+	  int			i,j;
+		  
+	  if ( !(fmapping = CreateFileMapping32A(hFile,NULL,PAGE_READONLY|SEC_COMMIT,0,0,NULL))) 
+	  { WARN(shell,"failed to create filemap.\n");	/* FIXME, INVALID_HANDLE_VALUE? */
+	    hRet = ICO_INVALID_FILE;
+	    goto end_2;		/* failure */
+	  }
+
+	  if ( !(peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0))) 
+	  { WARN(shell,"failed to mmap filemap.\n");
+	    hRet = ICO_INVALID_FILE;
+	    goto end_2;		/* failure */
+	  }
+
+	  dheader = (PIMAGE_DOS_HEADER)peimage;
+	  pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);	  /* it is a pe header, SHELL_GetResourceTable checked that */
+	  pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header));	/* probably makes problems with short PE headers...*/
+	  rootresdir = NULL;
+
+	  for (i=0;i<pe_header->FileHeader.NumberOfSections;i++) 
+	  { if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
+	      continue;
+	    /* FIXME: doesn't work when the resources are not in a seperate section */
+	    if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress) 
+	    { rootresdir = (PIMAGE_RESOURCE_DIRECTORY)((char*)peimage+pe_sections[i].PointerToRawData);
+	      break;
+	    }
+	  }
+
+	  if (!rootresdir) 
+	  { WARN(shell,"haven't found section for resource directory.\n");
+	    goto end_4;		/* failure */
+	  }
+  /* search the group icon dir*/
+	  if (!(icongroupresdir = GetResDirEntryW(rootresdir,RT_GROUP_ICON32W, (DWORD)rootresdir,FALSE))) 
+	  { WARN(shell,"No Icongroupresourcedirectory!\n");
+	    goto end_4;		/* failure */
+	  }
+	  iconDirCount = icongroupresdir->NumberOfNamedEntries+icongroupresdir->NumberOfIdEntries;
+
+  /* number of icons requested */
+	  if( nIconIndex == -1 )
+	  { hRet = iconDirCount;
+	    goto end_3;		/* success */
+	  }
+  
+	  if (nIconIndex >= iconDirCount) 
+	  { WARN(shell,"nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
+	    goto end_4;		/* failure */
+	  }
+
+	  xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);	/* caller just wanted the number of entries */
+
+	  if( n > iconDirCount - nIconIndex )	/* assure we don't get too much ... */
+	  { n = iconDirCount - nIconIndex;
+	  }
+
+	  xresent = xresent+nIconIndex;		/* starting from specified index ... */
+
+	  for (i=0;i<n;i++,xresent++) 
+	  { PIMAGE_RESOURCE_DIRECTORY	resdir;
+
+	    /* go down this resource entry, name */
+	    resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s.OffsetToDirectory));
+
+	    /* default language (0) */
+	    resdir = GetResDirEntryW(resdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
+	    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;
+	      igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
+	    }
+
+	    if (!igdata) 
+	    { WARN(shell,"no matching real address for icongroup!\n");
+	      goto end_4;	/* failure */
+	    }
+	    RetPtr[i] = LookupIconIdFromDirectoryEx32(igdata, TRUE, cxDesired, cyDesired, LR_DEFAULTCOLOR);
+	  }
+
+	  if (!(iconresdir=GetResDirEntryW(rootresdir,RT_ICON32W,(DWORD)rootresdir,FALSE))) 
+	  { WARN(shell,"No Iconresourcedirectory!\n");
+	    goto end_4;		/* failure */
+	  }
+
+	  for (i=0;i<n;i++) 
+	  { PIMAGE_RESOURCE_DIRECTORY	xresdir;
+	    xresdir = GetResDirEntryW(iconresdir,(LPWSTR)(DWORD)RetPtr[i],(DWORD)rootresdir,FALSE);
+	    xresdir = GetResDirEntryW(xresdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
+	    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(shell,"no matching real address found for icondata!\n");
+	      RetPtr[i]=0;
+	      continue;
+	    }
+	    RetPtr[i] = CreateIconFromResourceEx32(idata,idataent->Size,TRUE,0x00030000, cxDesired, cyDesired, LR_DEFAULTCOLOR);
+	  }
+	  hRet = RetPtr[0];	/* return first icon */
+	  goto end_3;		/* sucess */
+	}
+	hRet = ICO_INVALID_FILE;
+	goto end_1;		/* unknown filetype */
+
+/* cleaning up (try & catch would be nicer:-) ) */
+end_4:	hRet = 0;	/* failure */
+end_3:	UnmapViewOfFile(peimage);	/* success */
+end_2:	CloseHandle(fmapping);
+end_1:	_lclose32( hFile);
+	return hRet;
+}
+
+/********************** THE ICON CACHE ********************************/
+HIMAGELIST ShellSmallIconList = 0;
+HIMAGELIST ShellBigIconList = 0;
+HDPA	hdpa=0;
+
+typedef struct
+{	LPSTR sSourceFile;	/* file icon is from */
+	DWORD dwSourceIndex;	/* index within the file */
+	DWORD dwListIndex;	/* index within the iconlist */
+} SIC_ENTRY, * LPSIC_ENTRY;
+
+/*****************************************************************************
+*	SIC_CompareEntrys (internal)
+* NOTES
+*  Callback for DPA_Search
+*/
+static INT32 SIC_CompareEntrys( LPVOID p1, LPVOID p2, LPARAM lparam)
+{	TRACE(shell,"%p %p\n", p1, p2);
+
+	if (((LPSIC_ENTRY)p1)->dwSourceIndex != ((LPSIC_ENTRY)p2)->dwSourceIndex) /* first the faster one*/
+	  return 1;
+
+	if (strcmp(((LPSIC_ENTRY)p1)->sSourceFile,((LPSIC_ENTRY)p2)->sSourceFile))
+	  return 1;
+
+	return 0;  
+}
+/*****************************************************************************
+*	SIC_Add (internal)
+*/
+INT32 WINAPI SIC_AddIcon (LPSTR sSourceFile, DWORD dwSourceIndex, HICON32 hSmallIcon, HICON32 hBigIcon)
+{	LPSIC_ENTRY lpsice;
+	INT32 index;
+	
+	TRACE(shell,"%s %li\n", sSourceFile, dwSourceIndex);
+
+	lpsice = (LPSIC_ENTRY) SHAlloc (sizeof (SIC_ENTRY));
+
+	lpsice->sSourceFile = HEAP_strdupA (GetProcessHeap(),0,sSourceFile);
+	lpsice->dwSourceIndex = dwSourceIndex;
+	
+/*	index = pDPA_Search (hdpa, lpsice, -1, SIC_CompareEntrys, 0, 0);
+	if ( -1 != index )
+	{ TRACE(shell, "-- allready inserted\n");
+	  SHFree(lpsice);
+	  return index;
+	}
+*/
+	index = pDPA_InsertPtr(hdpa, 0x7fff, lpsice);
+	if ( -1 == index )
+	{ SHFree(lpsice);
+	  return -1;
+        } 
+
+	lpsice->dwListIndex = pImageList_GetImageCount(ShellSmallIconList)+1;
+
+	pImageList_AddIcon (ShellSmallIconList, hSmallIcon);
+	pImageList_AddIcon (ShellBigIconList, hBigIcon);
+	
+	return index;
+	
+}
+/*****************************************************************************
+*	SIC_GetIcon (internal)
+* NOTES
+*  look in the cache for a proper icon. if not available the icon is taken
+*  from the file and cached
+*/
+HICON32 WINAPI SIC_GetIcon (LPSTR sSourceFile, DWORD dwSourceIndex, BOOL32 bSmallIcon )
+{	LPSIC_ENTRY lpsice;
+	INT32 index;
+	HICON32 hSmallIcon, hBigIcon;
+		
+	TRACE(shell,"%s %li\n", sSourceFile, dwSourceIndex);
+
+	lpsice = (LPSIC_ENTRY) SHAlloc (sizeof (SIC_ENTRY));
+
+	lpsice->sSourceFile = HEAP_strdupA (GetProcessHeap(),0,sSourceFile);
+	lpsice->dwSourceIndex = dwSourceIndex;
+	
+	index = pDPA_Search (hdpa, lpsice, -1, SIC_CompareEntrys, 0, 0);
+
+	if ( -1 != index )
+	{ TRACE(shell, "-- found\n");
+	  SHFree (lpsice);
+
+	  index = ((LPSIC_ENTRY)pDPA_GetPtr(hdpa, index))->dwListIndex;
+	  if (bSmallIcon)
+	    return pImageList_GetIcon(ShellSmallIconList, index, ILD_NORMAL);
+	  return pImageList_GetIcon(ShellBigIconList, index, ILD_NORMAL);
+	}
+/*
+	index = pDPA_InsertPtr(hdpa, 0x7fff, lpsice);
+	if ( -1 == index )
+	{ SHFree(lpsice);
+        } 
+
+	lpsice->hSmallIcon = hSmallIcon;
+	lpsice->hBigIcon = hBigIcon;
+
+	pImageList_AddIcon (ShellSmallIconList, hSmallIcon);
+	pImageList_AddIcon (ShellBigIconList, hBigIcon);
+	*/
+	return 0;
+	
+}
+/*****************************************************************************
+*	SIC_Initialize (internal)
+* NOTES
+*  hack to load the resources from the shell32.dll under a different dll name 
+*  will be removed when the resource-compiler is ready
+*/
+BOOL32 WINAPI SIC_Initialize(void)
+{	CHAR   		szShellPath[MAX_PATH];
+	HGLOBAL32	hSmRet, hLgRet;
+	HICON32		*pSmRet, *pLgRet;
+	UINT32		index;
+ 
+	TRACE(shell,"\n");
+
+	if (hdpa)	/* already initialized?*/
+	  return TRUE;
+	  
+  	hdpa = pDPA_Create(16);
+
+	if (!hdpa)
+	{ return(FALSE);
+	}
+
+	GetWindowsDirectory32A(szShellPath,MAX_PATH);
+	PathAddBackslash32A(szShellPath);
+	strcat(szShellPath,"system\\shell32.dll");
+       
+	hSmRet = GlobalAlloc32( GMEM_FIXED | GMEM_ZEROINIT, sizeof(HICON32)*40);
+	hLgRet = GlobalAlloc32( GMEM_FIXED | GMEM_ZEROINIT, sizeof(HICON32)*40);
+
+	pSmRet = (HICON32*)GlobalLock32(hSmRet);
+	pLgRet = (HICON32*)GlobalLock32(hLgRet);
+
+	ExtractIconEx32A ( szShellPath, 0, pLgRet, pSmRet, 40 );
+
+	ShellSmallIconList = pImageList_Create(16,16,ILC_COLORDDB | ILC_MASK,0,0x20);
+	ShellBigIconList = pImageList_Create(32,32,ILC_COLORDDB | ILC_MASK,0,0x20);
+
+	for (index=0; index<40; index++)
+	{ if (! pSmRet[index] )
+	  { MSG("*** failure loading resources from %s\n", szShellPath );
+	    MSG("*** this is a hack for loading the internal and external dll at the same time\n");
+	    MSG("*** you can ignore it but you will miss some icons in win95 dialogs\n\n");
+	    break;
+	  }
+	  SIC_AddIcon (szShellPath, index, pSmRet[index], pLgRet[index]);
+	}
+		
+	GlobalUnlock32(hLgRet);
+	GlobalFree32(hLgRet);
+
+	GlobalUnlock32(hSmRet);
+	GlobalFree32(hSmRet);
+
+	TRACE(shell,"hIconSmall=%p hIconBig=%p\n",ShellSmallIconList, ShellBigIconList);
+
+	return TRUE;
+}
+
+/*************************************************************************
+ * Shell_GetImageList [SHELL32.71]
+ *
+ * PARAMETERS
+ *  imglist[1|2] [OUT] pointer which recive imagelist handles
+ *
+ */
+DWORD WINAPI Shell_GetImageList(HIMAGELIST * imglist1,HIMAGELIST * imglist2)
+{	TRACE(shell,"(%p,%p)\n",imglist1,imglist2);
+	if (imglist1)
+	{ *imglist1=ShellBigIconList;
+	}
+	if (imglist2)
+	{ *imglist2=ShellSmallIconList;
+	}
+
+	return TRUE;
+}
+
+/*************************************************************************
+ * SHMapPIDLToSystemImageListIndex [SHELL32.77]
+ *
+ * PARAMETERS
+ * x  pointer to an instance of IShellFolder 
+ * 
+ * NOTES
+ *     first hack
+ *
+ */
+DWORD WINAPI SHMapPIDLToSystemImageListIndex(LPSHELLFOLDER sh,LPITEMIDLIST pidl,DWORD z)
+{	LPITEMIDLIST pidltemp = ILFindLastID(pidl);
+
+ 	FIXME(shell,"(SF=%p,pidl=%p,%08lx):stub.\n",sh,pidl,z);
+
+	if (_ILIsMyComputer(pidltemp))
+	{ return 20;
+	}
+	else if (_ILIsDrive (pidltemp))
+	{ return 8;
+	}
+	else if (_ILIsFolder (pidltemp))
+	{ return 3;
+	}
+	else
+	{ return 1;
+	}
+}
+
+/*************************************************************************
+*	ExtracticonEx32		[shell32.189]
+*/
+HICON32 WINAPI ExtractIconEx32AW ( LPVOID lpszFile, INT32 nIconIndex, HICON32 * phiconLarge, HICON32 * phiconSmall, UINT32 nIcons )
+{	if (VERSION_OsIsUnicode())
+	  return ExtractIconEx32W ( lpszFile, nIconIndex, phiconLarge, phiconSmall, nIcons);
+	return ExtractIconEx32A ( lpszFile, nIconIndex, phiconLarge, phiconSmall, nIcons);
+}
+/*************************************************************************
+*	ExtracticonEx32A	[shell32.190]
+* RETURNS
+*  0 no icon found 
+*  1 file is not valid
+*  HICON32 handle of a icon (phiconLarge/Small == NULL)
+*/
+HICON32 WINAPI ExtractIconEx32A ( LPSTR lpszFile, INT32 nIconIndex, HICON32 * phiconLarge, HICON32 * phiconSmall, UINT32 nIcons )
+{	HICON32 ret=0;
+	
+	TRACE(shell,"file=%s idx=%i %p %p num=%i\n", lpszFile, nIconIndex, phiconLarge, phiconSmall, nIcons );
+
+	if (nIconIndex==-1)	/* Number of icons requested */
+	  return ICO_ExtractIconEx(lpszFile, NULL, -1, 0, 0, 0  );
+	  
+	
+	if (phiconLarge)
+	{ ret = ICO_ExtractIconEx(lpszFile, phiconLarge, nIconIndex, nIcons, 32, 32  );
+	  if ( nIcons==1)
+	  { ret = phiconLarge[0];	    
+	  }
+	}
+
+	/* if no pointers given and one icon expected, return the handle directly*/
+	if (!phiconLarge && ! phiconSmall && nIcons==1 )
+	  phiconSmall = &ret;
+	
+	if (phiconSmall)
+	{ ret = ICO_ExtractIconEx(lpszFile, phiconSmall, nIconIndex, nIcons, 16, 16  );
+	  if ( nIcons==1 )
+	  { ret = phiconLarge[0];
+	  }
+	}
+
+	return ret;
+}
+/*************************************************************************
+*	ExtracticonEx32W	[shell32.191]
+*/
+HICON32 WINAPI ExtractIconEx32W ( LPWSTR lpszFile, INT32 nIconIndex, HICON32 * phiconLarge, HICON32 * phiconSmall, UINT32 nIcons )
+{	LPSTR sFile;
+	DWORD ret;
+	
+	TRACE(shell,"file=%s idx=%i %p %p num=%i\n", debugstr_w(lpszFile), nIconIndex, phiconLarge, phiconSmall, nIcons );
+
+	sFile = HEAP_strdupWtoA (GetProcessHeap(),0,lpszFile);
+	ret = ExtractIconEx32A ( sFile, nIconIndex, phiconLarge, phiconSmall, nIcons);
+	HeapFree(GetProcessHeap(),0,sFile);
+	return ret;
+}