void* _FindResource(IMAGE_DOS_HEADER* pDosHeader, void* prt, int resIndex, int resType, DWORD* pcbSize)
{
int count, index = 0;
IMAGE_RESOURCE_DIRECTORY_ENTRY* pRes;
IMAGE_RESOURCE_DATA_ENTRY* pEntry;
pRes = _FindResourceBase(prt, resType, &count);
if (resIndex < 0) {
for (index = 0; index < count; index++)
if (pRes[index].Name == (DWORD)(-resIndex))
break;
}
else index = resIndex;
if (index >= count)
return NULL;
if (pRes[index].OffsetToData & IMAGE_RESOURCE_DATA_IS_DIRECTORY) {
IMAGE_RESOURCE_DIRECTORY* pDir;
pDir = (IMAGE_RESOURCE_DIRECTORY*)((LPBYTE)prt + (pRes[index].OffsetToData & ~IMAGE_RESOURCE_DATA_IS_DIRECTORY));
pRes = (IMAGE_RESOURCE_DIRECTORY_ENTRY*)(pDir+1);
index = 0;
}
if (pRes[index].OffsetToData & IMAGE_RESOURCE_DATA_IS_DIRECTORY)
return NULL;
pEntry = (IMAGE_RESOURCE_DATA_ENTRY*)((LPBYTE)prt + pRes[index].OffsetToData);
*pcbSize = pEntry->Size;
return _RelativeVirtualAddresstoPtr(pDosHeader, pEntry->OffsetToData);
}
int _FindResourceCount(void* prt, int resType)
{
int count;
_FindResourceBase(prt, resType, &count);
return count;
}
int ExtractIcons::_FindResourceCount( void* prt, INT_PTR resType )
{
int count;
IMAGE_RESOURCE_DIRECTORY_ENTRY* pRes;
pRes = _FindResourceBase( prt, resType, &count );
return count;
}
void* ExtractIcons::_FindResource( IMAGE_DOS_HEADER* pDosHeader, void* prt, int resIndex, INT_PTR resType, DWORD* pcbSize )
{
int count;
IMAGE_RESOURCE_DIRECTORY_ENTRY* pRes;
pRes = _FindResourceBase( prt, resType, &count );
int index = 0;
// find the actual resource
// id (resIndex < 0)
// ordinal (resIndex >= 0)
if( resIndex < 0 )
{
for( index = 0; index < count; index++ )
if( pRes[index].Name == (DWORD)(-resIndex) )
break;
}
else
{
index = resIndex;
}
if( index >= count )
return NULL; // index out of range
// another Directory
// probably language take the first one
if( pRes[index].OffsetToData & IMAGE_RESOURCE_DATA_IS_DIRECTORY)
{
IMAGE_RESOURCE_DIRECTORY* pDir;
pDir = (IMAGE_RESOURCE_DIRECTORY*)((LPBYTE)prt + (pRes[index].OffsetToData & ~IMAGE_RESOURCE_DATA_IS_DIRECTORY) );
pRes = (IMAGE_RESOURCE_DIRECTORY_ENTRY*)(pDir+1);
index = 0;
}
// Oooooooooooo no !! another Directory !!!
if( pRes[index].OffsetToData & IMAGE_RESOURCE_DATA_IS_DIRECTORY )
return NULL;
IMAGE_RESOURCE_DATA_ENTRY* pEntry;
pEntry = (IMAGE_RESOURCE_DATA_ENTRY*)((LPBYTE)prt + pRes[index].OffsetToData);
// all OffsetToData fields except the final one are relative to
// the start of the section. the final one is a virtual address
// we need to go back to the header and get the virtual address
// of the resource section to do this right.
*pcbSize = pEntry->Size;
return _RelativeVirtualAddresstoPtr( pDosHeader, pEntry->OffsetToData );
}
