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. Since 2.18
TRUE if widget is a toplevel, FALSE otherwise
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. Since 2.18