Gets whether gtk_widget_set_vexpand() has been used to explicitly set the expand flag on this widget.
See gtk_widget_get_hexpand_set() for more detail.
Return: whether vexpand has been explicitly set
See Implementation
Gets whether gtk_widget_set_vexpand() has been used to explicitly set the expand flag on this widget.
See gtk_widget_get_hexpand_set() for more detail.
Return: whether vexpand has been explicitly set