GtkWidget::show_now
Shows a widget. If the widget is an unmapped toplevel widget (i.e. a
GtkWindow that has not yet been shown), enter the main loop and wait for
the window to actually be mapped. This is equivilent to calling show
immediately followed by gtk::main() .
Note: Once the main loop has begun your application will be able to
recveive user events. Make sure that show_now() is the method you want to call
before using it.
See also: show() .