Opencv Mat图像与HBITMAP互相转换

HBitmap 转Mat

bool HBitmap2Mat(HBITMAP &hBmp,Mat &mat)

{
        BITMAP Bmp;    
        GetObject(a->bmp,sizeof(BITMAP),&Bmp);    
        int nChannels = Bmp.bmBitsPixel == 1 ? 1 : Bmp.bmBitsPixel/8 ;   
        int depth = Bmp.bmBitsPixel == 1 ? IPL_DEPTH_1U : IPL_DEPTH_8U;   

       Mat des_mat;

       des_mat.create(cvSize(Bmp.bmWidth,Bmp.bmHeight), CV_MAKETYPE(CV_8U,nChannels));
       GetBitmapBits(a->bmp,Bmp.bmHeight*Bmp.bmWidth*nChannels,des_mat.data);  

       mat = des_mat;

      return true;

}

Mat 转HBitmap

bool Mat2HBitmap(HBITMAP &hBmp,Mat &mat)

{
      //MAT类的TYPE=（nChannels-1+ CV_8U）<<3int nChannels=(mat.type()>>3)-CV_8U+1;

        int iSize=mat.cols*mat.rows*nChannels;
        hBmp=CreateBitmap( mat.cols,mat.rows,1,nChannels*8,mat.data);
       return true;

}