Re: "widget_class->event" not working

[Yu Feng <rainwoodman gmail com>]

The default signal handler is not invoked if any of the customized
signal handler returns TRUE or something.
Check if there are any handlers connected to this signal later on that
returns TRUE.

Yu

-----
gboolean            user_function                      (GtkWidget *widget,
                                                        GdkEvent  *event,
                                                        gpointer   user_data)      : Run Last
The GTK+ main loop will emit three signals for each GDK event delivered to a widget: one generic 
::event signal, another, more specific, signal that matches the type of event delivered (e.g. 
"key-press-event") 
and finally a generic "event-after" signal.

widget :

the object which received the signal.
event :

the GdkEvent which triggered this signal
user_data :

user data set when the signal handler was connected.
Returns :

TRUE to stop other handlers from being invoked for the event and to cancel the 
emission of the second specific ::event signal. FALSE to propagate the event further
 and to allow the emission of the second signal. 
The ::event-after signal is emitted regardless of the return value.

On Thu, 2009-08-20 at 21:04 -0400, Patrick M. Rutkowski wrote:
> Incorrect,
>
> The ISO C standard defines the & operator on a function name to be
> optional when taking asking for a function pointer, I just use it as a
> habit of style.
>
> Here's a demonstration of this effect:
> http://www.rutski89.com/static/funcptr.txt
>
> I still need help with the ->event GTK problem.
>
> -Patrick
>
> On Thu, Aug 20, 2009 at 8:50 PM, Brian J. Tarricone<bjt23 cornell edu> wrote:
> > On 08/20/2009 05:36 PM, Patrick M. Rutkowski wrote:
> > > I've got the following code: http://www.rutski89.com/static/gtkevent.cpp
> > >
> > > I do indeed do this:
> > >
> > > widget_class->event = &any_event_r
> > >
> > > but then any_event_r() never subsequently get's called, and I'm
> > > certain that the "widget_class->event = &any_event_r" line really does
> > > execute.
> > >
> > > Any suggestions?
> >
> > You're setting ->event to a pointer to a pointer to a function when all
> > it wants is a pointer to a function.
> >
> >        -brian
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