Tristan Van Berkom wrote: > On Thu, Sep 2, 2010 at 11:03 AM, Jeffrey Barish > <jeff_barish@xxxxxxxxxxxxx> wrote: >> I have a custom widget that resides on a page of a notebook. I would >> like for the widget to be able to detect by itself when it becomes >> visible or invisible (as the user selects pages of the notebook). The >> expose-event tells me when the widget becomes visible, but I can't find a >> corresponding event that tells me the converse. Likewise, the >> visibility-notify-event tells me only when the widget becomes visible, >> not the converse. Any suggestions? > > Firstly if its a custom widget of your making and needs to run code.. > it should generally not connect to signals on its own class... instead you > should implement the appropriate methods on the class directly. > > A widget's visibility status is not exactly what you are looking for > (A widget's "visible" flag is TRUE if the client code wants the widget > to be visible... whether its on a page that is mapped or not). > > You will (most probably) want to implement ->map() and ->unmap() in > your custom widget class to detect if its actually shown or not. Thanks. map/unmap did the trick. How to I implement appropriate methods directly? Is this where the "do_" methods come in? I tried do_map_event and do_unmap_event, but they don't get called. Ah, do_map gets called, but then doesn't do anything. do_unmap does not get called. I'm just guessing here. -- Jeffrey Barish _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
