Sets a non default parent window for widget.
For #GtkWindow classes, setting a parent_window effects whether the window is a toplevel window or can be embedded into other widgets.
For #GtkWindow classes, this needs to be called before the window is realized.
the new parent window.
Sets a non default parent window for widget.
For #GtkWindow classes, setting a parent_window effects whether the window is a toplevel window or can be embedded into other widgets.
For #GtkWindow classes, this needs to be called before the window is realized.