HasOffset
bool HasOffset(BitmapSize size) const;
if (iconTarPtrRef->HasOffset(BITMAP_SIZE_ANY))
if (iconTarPtrRef->HasOffset(BITMAP_SIZE_64) && desiredSize >= 64)
if (iconTarPtrRef->HasOffset(BITMAP_SIZE_32) && desiredSize >= 32)
if (iconTarPtrRef->HasOffset(BITMAP_SIZE_32))