Russian Qt Forum

C#
Bitmap currentRegionMap = ....
 
BitmapData btmData= currentRegionMap.LockBits(new Rectangle(x, y, width, height), ImageLockMode.ReadOnly, currentRegionMap.PixelFormat);
 
byte* a = (byte*)btmData.Scan0.ToPointer();
 
 

C++ (Qt)
bool CompareParts( const QImage & img1, const QRect & R1, const QImage & img2, const QRect & R2 )
{
 if (R1.width() != R2.width()) return false;
 if (R1.height() != R2.height()) return false;
 
 int pixSize = img1.depth() / 8;
 if (!pixSize || pixSize != img2.depth() / 8)
  return CompareByPixels(img1, R1, img2, R2);
 
 for (int y = 0; y < R1.height(); ++y) {
   const uchar * src1 = img1.scanLine(y + R1.top()) + pixSize * R1.left();
   const uchar * src2 = img2.scanLine(y + R2.top()) + pixSize * R2.left();
   if (memcmp(src1, src2, R1.width() * pixSize) != 0) return false;
 }
 return true;
}

C#
BitmapData btmData= currentRegionMap.LockBits(new Rectangle(x, y, width, height), ImageLockMode.ReadOnly, currentRegionMap.PixelFormat);
byte* a = (byte*)btmData.Scan0.ToPointer();
 

    uchar * point= image.scanLine(2);

    for(int i=0;i<image.bytesPerLine();i++)
    {
        *point=0;
        point++;
    }

C++ (Qt)
    memset(image.scanLine(2), 0, image.bytesPerLine());
 

C#
Bitmap newBitmap = new Bitmap(rects[i].Width, rects[i].Height, PixelFormat.Format24bppRgb);
Graphics graphics = Graphics.FromImage(newBitmap);
graphics.DrawImage(currentRegionMap, new Rectangle(0, 0, rects[i].Width, rects[i].Height), rects[i], GraphicsUnit.Pixel);
graphics.Dispose();

C++ (Qt)
QImage surf;
QPainter p( &surf );
p.drawImage( ... );