void CffmpegUIDlg::SaveAsBMP(AVFrame *pFrameRGB, int width, int height, int index, int bpp)
{
BITMAPFILEHEADER bmpheader;
BITMAPINFOHEADER bmpinfo;

bmpheader.bfType = 0x4d42;  
bmpheader.bfReserved1 = ;  
bmpheader.bfReserved2 = ;  
bmpheader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);  
bmpheader.bfSize = bmpheader.bfOffBits + width\*height\*bpp / ;

bmpinfo.biSize = sizeof(BITMAPINFOHEADER);  
bmpinfo.biWidth = width;  
bmpinfo.biHeight = height;  
bmpinfo.biPlanes = ;  
bmpinfo.biBitCount = bpp;  
bmpinfo.biCompression = BI\_RGB;  
bmpinfo.biSizeImage = (width\*bpp + ) /  \*  \* height;  
bmpinfo.biXPelsPerMeter = ;  
bmpinfo.biYPelsPerMeter = ;  
bmpinfo.biClrUsed = ;  
bmpinfo.biClrImportant = ;

DWORD dwInfoSize = width\*height\*bpp / ;  
HGLOBAL hGlobal = GlobalAlloc( GMEM\_MOVEABLE, sizeof(bmpheader) + sizeof(bmpinfo) + dwInfoSize);  
BYTE \*pvData = (BYTE\*)GlobalLock( hGlobal );  
memcpy(pvData, &bmpheader, sizeof(bmpheader));  
memcpy(pvData + sizeof(bmpheader), &bmpinfo, sizeof(bmpinfo));  
memcpy(pvData + sizeof(bmpheader) + sizeof(bmpinfo), pFrameRGB->data\[\], dwInfoSize);  
GlobalUnlock( hGlobal );

Gdiplus::Graphics graphics(hdcClient);  
IStream \*pStream = NULL;  
HRESULT hr = CreateStreamOnHGlobal( hGlobal,  TRUE,  &pStream );  
Gdiplus::Bitmap bmp(pStream);  
graphics.DrawImage(&bmp, , );  
GlobalFree( hGlobal ); // 使用Bitmap完后，需要释放资源，以免造成内存泄漏。  

}