private static extern int XGetWindowAttributes(IntPtr display, IntPtr w, out XWindowAttributes window_attributes_return);
public void HandleButtonPress(XButtonEvent e, XWindow window, XWindow root, XWindow subwindow)
{
pointer.Grab (e.window, XEventMask.PointerMotionMask | XEventMask.ButtonReleaseMask);
attr = resize_main_win.GetAttributes ();
start = e;
old_resize_x = resize_win_x;
old_resize_y = resize_win_y;
}