System.Windows.Forms.XplatUICarbon.UngrabWindow C# (CSharp) Method

		internal override void UngrabWindow(IntPtr hwnd) {
                        bool was_grabbed = Grab.Hwnd != IntPtr.Zero;

                        Grab.Hwnd = IntPtr.Zero;
                        Grab.Confined = false;

                        if (was_grabbed) {
                                // lparam should be the handle to the window gaining the mouse capture,
                                // but we dont have that information like X11.
                                // Also only generate WM_CAPTURECHANGED if the window actually was grabbed.
                                SendMessage (hwnd, Msg.WM_CAPTURECHANGED, IntPtr.Zero, IntPtr.Zero);
                        }
		}