MFC从资源文件获取png图片

/*
GDI image版本
*/
BOOL LoadImageFromIDResource(UINT nID, LPCTSTR sTR, Image* &pImg)
{
	HINSTANCE hInst = AfxGetResourceHandle();
	HRSRC hRsrc = ::FindResource(hInst, MAKEINTRESOURCE(nID), sTR); // type
	if (!hRsrc)
		return FALSE;
	// load resource into memory
	DWORD len = SizeofResource(hInst, hRsrc);
	BYTE* lpRsrc = (BYTE*)LoadResource(hInst, hRsrc);
	if (!lpRsrc)
		return FALSE;
	// Allocate global memory on which to create stream
	HGLOBAL m_hMem = GlobalAlloc(GMEM_FIXED, len);
	BYTE* pmem = (BYTE*)GlobalLock(m_hMem);
	memcpy(pmem, lpRsrc, len);
	GlobalUnlock(m_hMem);
	IStream* pstm;
	CreateStreamOnHGlobal(m_hMem, FALSE, &pstm);
	// load from stream
	pImg = Gdiplus::Image::FromStream(pstm);
	// free/release stuff
	pstm->Release();
	FreeResource(lpRsrc);
	GlobalFree(m_hMem);
	return TRUE;
}