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C-/C++-Quelltext

[ System.Runtime.InteropServices.DllImportAttribute( "gdi32.dll" ) ]
        private static extern bool BitBlt( IntPtr hdcDest, 
            int nXDest, 
            int nYDest, 
            int nWidth, 
            int nHeight, 
            IntPtr hdcSrc, 
            int nXSrc, 
            int nYSrc, 
            System.Int32 dwRop ); 

        private void button1_Click(object sender, System.EventArgs e)
        {
            PrintDialog foo = new PrintDialog();
            foo.Document = printDocument1;
            DialogResult res = foo.ShowDialog();

            if ( res == DialogResult.OK )
            {
                printDocument1.Print();
            }
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            Graphics graphicsSrc = this.CreateGraphics();
            Image image = new Bitmap( this.Size.Width, this.Size.Height );
            Graphics graphicsDst = Graphics.FromImage( image );

            IntPtr srcDC = graphicsSrc.GetHdc();
            IntPtr dstDC = graphicsDst.GetHdc();

            BitBlt( dstDC, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, srcDC, 0, 0, 13369376 );

            graphicsSrc.ReleaseHdc( srcDC );
            graphicsDst.ReleaseHdc( dstDC );

            e.Graphics.DrawImage( image, 0, 0 );
        }

C-/C++-Quelltext

this.Invalidate();
this.Refresh();