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

		internal override bool SetTopmost(IntPtr handle, bool enabled) {

			Hwnd hwnd = Hwnd.ObjectFromHandle(handle);

			if (enabled) {
				lock (XlibLock) {
					if (hwnd.Mapped) {
						SendNetWMMessage(hwnd.WholeWindow, _NET_WM_STATE, (IntPtr) NetWmStateRequest._NET_WM_STATE_ADD, _NET_WM_STATE_ABOVE, IntPtr.Zero);
					} else {
						int[] atoms = new int[8];
						atoms[0] = _NET_WM_STATE_ABOVE.ToInt32();
						XChangeProperty(DisplayHandle, hwnd.whole_window, _NET_WM_STATE, (IntPtr)Atom.XA_ATOM, 32, PropertyMode.Replace, atoms, 1);
					}
				}
			} else {
				lock (XlibLock) {
					if (hwnd.Mapped)
						SendNetWMMessage(hwnd.WholeWindow, _NET_WM_STATE, (IntPtr) NetWmStateRequest._NET_WM_STATE_REMOVE, _NET_WM_STATE_ABOVE, IntPtr.Zero);
					else
						XDeleteProperty(DisplayHandle, hwnd.whole_window, _NET_WM_STATE);
				}
			}
			return true;
		}