System.Windows.Forms.XplatUIX11.SetIcon C# (CSharp) Method

		private void SetIcon(Hwnd hwnd, Icon icon)
		{
			if (icon == null) {
				// XXX

				// This really needs to do whatever it
				// takes to remove the window manager
				// menu, not just delete the ICON
				// property.  This will cause metacity
				// to use the "no icon set" icon, and
				// we'll still have an icon.
				XDeleteProperty (DisplayHandle, hwnd.whole_window, _NET_WM_ICON);
			}
			else {
				Bitmap		bitmap;
				int		size;
				IntPtr[]	data;
				int		index;

				bitmap = icon.ToBitmap();
				index = 0;
				size = bitmap.Width * bitmap.Height + 2;
				data = new IntPtr[size];

				data[index++] = (IntPtr)bitmap.Width;
				data[index++] = (IntPtr)bitmap.Height;

				for (int y = 0; y < bitmap.Height; y++) {
					for (int x = 0; x < bitmap.Width; x++) {
						data[index++] = (IntPtr)bitmap.GetPixel (x, y).ToArgb ();
					}
				}

				XChangeProperty (DisplayHandle, hwnd.whole_window,
						 _NET_WM_ICON, (IntPtr)Atom.XA_CARDINAL, 32,
						 PropertyMode.Replace, data, size);
			}
		}