void CvvImage::DrawMatToHDC(Mat mat, HDC hDC, RECT rect)
{
ATL::CImage img; //ATL::CImage
int w = mat.cols; //宽
int h = mat.rows; //高
int chinnels = mat.channels();
img.Create(w, h, chinnels << 3);
RGBQUAD* pColorTable = NULL;
int nMaxColors = 256;
pColorTable = new RGBQUAD[nMaxColors];
img.GetColorTable(0, nMaxColors, pColorTable);
for(int i = 0; i < nMaxColors; i++)
{
pColorTable->rgbBlue = (BYTE) i;
pColorTable->rgbGreen = (BYTE) i;
pColorTable->rgbRed = (BYTE) i;
}
img.SetColorTable(0, nMaxColors, pColorTable);
delete[] pColorTable;
int i, j, k;
BYTE *pSource = NULL;
BYTE *pImgData = (BYTE *) img.GetBits();
int step = img.GetPitch();
if(chinnels == 1)
{
for(i = 0; i < h; ++i)
{
pSource = mat.ptr<BYTE> (i);
for(j = 0; j < w; ++j)
{
* (pImgData + i * step + j) = pSource[j];
}
}
}
else if(chinnels == 3)
{
for(i = 0; i < h; ++i)
{
pSource = mat.ptr<BYTE> (i);
for(j = 0; j < w; ++j)
{
for(k = 0; k < 3; ++k)
{
* (pImgData + i * step + j * 3 + k) = pSource[j * 3 + k];
}
}
}
}
else
{
AfxMessageBox(TEXT("仅支持灰度图/3通道彩色图"));
return;
}
SetStretchBltMode(hDC, COLORONCOLOR);
img.StretchBlt(hDC, rect, SRCCOPY);
img.Destroy();
}
