On Fri, 2010-07-23 at 07:09 -0600, Michael White wrote: > Hi All, > > I have a few questions with the focus callback that I'm hoping someone > can help me out with. > > I have my code connecting to the signal_focus_out_event () for my > entry widget. when i move the keyboard focus somewhere else (by > clicking somewhere or pressing tab), i see my callback gets called > which is great, but here are my questions. > > 1.) the prototype of the callback is: bool on_my_focus_out_event( > GdkEventFocus* event) and i was wondering what the return value > signifies?
That is explained here: http://library.gnome.org/devel/gtkmm-tutorial/stable/sec-xeventsignals.html.en > at first, i thought returning true or false would let the focus be > lost or keep the focus there. for example, if my entry widget only > could contain a value between 0 and 10, i could keep the user in the > same entry widget until a valid value was inputted. however, after > doing testing, returning true and false seemed to have done the same > thing. > > 2.) for the same callback, there is a GdkEventFocus pointer that is > passed in. from looking at the documentation, I'm still confused. i > want to know how i can get the widget that just lost focus? for > example, i want to use the same callback to handle the losing of focus > on 3 entry widgets but validate them differently. You could pass the Gtk::Widget* via sigc::bind(): http://library.gnome.org/devel/gtkmm-tutorial/stable/sec-binding-extra-arguments.html.en > to validate the data, i need to obtain the text from the appropriate > entry widget. > > Thanks everyone! since I'm a newbie to gtkmm, it's probably something > I'm doing incorrectly... -- [email protected] www.murrayc.com www.openismus.com _______________________________________________ gtkmm-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gtkmm-list
