Capture screenshot Google Chrome window

As all you know, PrintWindow api give us a black image when us want a capture screenshot of Google Chrome window. So, a friend said me that a possible solution for this problem is: Reduce Google Chrome window for -1px in both sides and after this, reset to original size. And so, will repaint again. Based on code below, someone could help me make this? sincerely I don't know where begin. ================================================================== [DllImport("[login to view URL]", SetLastError = true)] static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("[login to view URL]", SetLastError = true)] static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); [DllImport("[login to view URL]")] private static extern IntPtr GetDC(IntPtr WindowHandle); [DllImport("[login to view URL]")] private static extern void ReleaseDC(IntPtr WindowHandle, IntPtr DC); [DllImport("[login to view URL]")] private static extern IntPtr GetWindowRect(IntPtr WindowHandle, ref Rect rect); [DllImport("[login to view URL]", SetLastError = true)] [return: MarshalAs([login to view URL])] static extern bool PrintWindow(IntPtr hwnd, IntPtr hDC, uint nFlags); [StructLayout([login to view URL])] private struct Rect { public int Left; public int Top; public int Right; public int Bottom; } public static Bitmap Capture(IntPtr handle) { Rect rect = new Rect(); GetWindowRect(handle, ref rect); Bitmap Bmp = new Bitmap([login to view URL] - [login to view URL], [login to view URL] - [login to view URL]); Graphics memoryGraphics = [login to view URL](Bmp); IntPtr dc = [login to view URL](); bool success = PrintWindow(handle, dc, 0); [login to view URL](dc); return Bmp; } private void button1_Click(object sender, EventArgs e) { IntPtr WindowHandle = FindWindowEx([login to view URL], [login to view URL], "Chrome_WidgetWin_1", null); Bitmap BMP = Capture(WindowHandle); [login to view URL]("C:\\[login to view URL]"); [login to view URL](); }