Gdiplus 贴图（助记) -------------------从资源中载入PNG图片

　　从资源中载入图片，亦可改为从内从中加载:

void LoadResImage(int nResID,Image * &lpImage)
{
    HINSTANCE hIns=AfxGetInstanceHandle();
    HRSRC hRsrc = ::FindResource (hIns,MAKEINTRESOURCE(nResID),_T("PNG")); // type
    if (!hRsrc)
        return;
    // load resource into memory
    DWORD len = SizeofResource(hIns, hRsrc);
    BYTE* lpRsrc = (BYTE*)LoadResource(hIns, hRsrc);
    if (!lpRsrc)
        return;
    // 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);
    IStream* pstm;
    CreateStreamOnHGlobal(m_hMem,FALSE,&pstm);
    // load from stream
    lpImage=Gdiplus::Image::FromStream(pstm);
    // free/release stuff
    GlobalUnlock(m_hMem);
    pstm->Release();
    FreeResource(lpRsrc);
}