Re: some newbie g_signal_connect questions

[TORRI Vincent <Vincent Torri math u-bordeaux fr>]

On Wed, 20 Aug 2003, Matthias Mann wrote:

>             
>         ***  some newbie g_signal_connect questions  ***
>  
>  Hi all!
>  
>  I've seen some difficulties while working in Gtk+ with signals.
>  Normally a function looks like this:
>  
>  void any_function(opt *any_option) {
>  
>       any_functions();
>  
>       return; }

The callback may return something else than nothing (look at the API : 
for example GtkWindow and its "frame-vent" signal, which returns a 
gboolean. I don't know any callback which returns something else than 
void or a gboolean. I think that this boolean has to be set FALSE or TRUE 
if we want the signal to be propagated (correct me if i'm wrong).

>  
>  but what's about callback functions? They don't need 'return;'.
>  Right?
>  
>  But if i have a function with 'return;' cause regular function
>  calls it and also a callback function. Could this make problems
>  for an application?
>  
>  And by the way: a "void" function, does it need this 'return;'?

No, but you could keep it.

>  Or could i leave it generally?
>  
>  best regards,
>  
>  mathew
>  

regards

Vincent TORRI

> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

-- 
TORRI Vincent
Mathematiques Appliquees Bordeaux                                                
Institut de Mathematiques                                                       
Universite Bordeaux 1                                                           
351 cours de la liberation                                                      
33 405 Talence cedex - France                                                   
                                                                                
Tel : 33 (0)5 40 00 21 42                                                       
Fax : 33 (0)5 40 00 26 26                                                       
--