Determines whether @widget is a toplevel widget.
Currently only #GtkWindow and #GtkInvisible (and out-of-process #GtkPlugs) are toplevel widgets. Toplevel widgets have no parent widget.
%TRUE if @widget is a toplevel, %FALSE otherwise
2.18
See Implementation
Determines whether @widget is a toplevel widget.
Currently only #GtkWindow and #GtkInvisible (and out-of-process #GtkPlugs) are toplevel widgets. Toplevel widgets have no parent widget.