public void RedrawControlAsBitmap(IntPtr hwnd)
{
global::System.Windows.Forms.Control c = global::System.Windows.Forms.Control.FromHandle(hwnd);
using (Bitmap bm = new Bitmap(c.Width, c.Height))
{
c.DrawToBitmap(bm, c.ClientRectangle);
using (Graphics g = c.CreateGraphics())
{
Point p = new Point(-1, -1);
g.DrawImage(bm, p);
}
}
}
