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  using bmp := new Bitmap(self.Width, self.Height) do
  begin
    using gr := Graphics.FromImage(bmp) do      
      gr.CopyFromScreen(new Point(self.Left, self.Top), new Point(0,0), new Size(self.Width, self.Height));

    bmp.Save('e:\screen.bmp');
  end;                    

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Graphics myGraphics = this.ActiveMdiChild.CreateGraphics();
Size s = ActiveForm.Size;
myBitmap = new Bitmap(s.Width, s.Height, myGraphics);
Graphics memoryGraphics = Graphics.FromImage(myBitmap);
memoryGraphics.CopyFromScreen(ActiveForm.Location.X, ActiveForm.Location.Y, 0, 0, s);
Clipboard.SetDataObject(myBitmap);