Re: Popup menus on a tree view

[Gustavo Giráldez <gustavo giraldez gmx net>]

Hi Todd,

On Wed, 2002-07-10 at 16:49, Todd Goyen wrote:
> Hello all,
> 
> I am trying to have a "button_press_event" callback on a treeview and searching through the archives I seem to find no mention of this being done. The eventbox_press_event is used to trigger a popup menu on a right click.
> My code is as follows:
> 
>     /*
>     make eventbox
>     make treeview
>     pack treeview in eventbox
>     */
>    
>     gtk_widget_set_events(eventbox, GDK_BUTTON_PRESS_MASK);
>     g_signal_connect(GTK_OBJECT(eventbox), "button_press_event",
>             GTK_SIGNAL_FUNC(eventbox_press_event), ca);
> 
> then the eventbox_press_event works provided the treeview is empty.
> as soon as the treeview has something put in it then my press_event stops getting called.  So i thought perhaps if i also:
> 
>     gtk_widget_add_events(treeview, GDK_BUTTON_PRESS_MASK);
>     g_signal_connect(GTK_OBJECT(treeview), "button_press_event",
>             GTK_SIGNAL_FUNC(eventbox_press_event), ca);
> 
> now the callback always works but the treeview no longer recieves mouse events, which i need to have happen as well.

You need to return FALSE from your event handler to tell Gtk+ to use the
default handler.  Basically: inspect the event and see if it interests
you; if it does, do whatever you need and return TRUE to indicate the
event has been handled; otherwise return FALSE and Gtk will try with the
next handler installed.  If I'm not mistaken, all events in Gtk behave
like this.

HTH,
Gustavo