ZForge.Controls.ExplorerBar.Expando.GetExpandedImage C# (CSharp) Méthode

        protected Image GetExpandedImage()
        {
            // create a new image to draw into
            Image image = new Bitmap(this.Width, this.Height);

            // get a graphics object we can draw into
            Graphics g = Graphics.FromImage(image);
            IntPtr hDC = g.GetHdc();

            // some flags to tell the control how to draw itself
            IntPtr flags = (IntPtr) (WmPrintFlags.PRF_CLIENT | WmPrintFlags.PRF_CHILDREN | WmPrintFlags.PRF_ERASEBKGND);

            // tell the control to draw itself
            NativeMethods.SendMessage(this.Handle, WindowMessageFlags.WM_PRINT, hDC, flags);

            // clean up resources
            g.ReleaseHdc(hDC);
            g.Dispose();

            // return the completed animation image
            return image;
        }