// NSAssert(xdata, @"no xdata when drawing");
if (! xdata) abort();
unsigned long delay = xsft->draw_cb (xdpy, xwindow, xdata);
// NSAssert(xdata, @"no xdata when drawing");
if (! xdata) abort();
unsigned long delay = xsft->draw_cb (xdpy, xwindow, xdata);