Re: Help: how to disconnect a signal?

[Tristan Van Berkom <vantr touchtunes com>]

Tom Liu wrote:

> Is this only way to do so?  What a pain!!
>  
Well; there's got to be a list of attatched handler id's somewhere on 
the object
or that signal or its marshaller or something; but some of the attatched 
handlers
might not be desireable to remove
i.e. "child widget wants to know when parent container gets resized"
or the object's handler itself.

AFAIK there is no "pool of private handlers" and "pool of user handlers" 
but maybe.

Regards,
                           -Tristan

> Also I have to free glist when widget got destroyed to avoid memory
> leak:
>
> g_object_set_data_full(G_OBJECT(obj), "handler_list", l,g_list_free);  
>
> thanks!
>
>
>
> -----Original Message-----
> From: gtk-app-devel-list-admin gnome org
> [mailto:gtk-app-devel-list-admin gnome org] On Behalf Of Tristan Van
> Berkom
> Sent: Thursday, November 20, 2003 10:51 AM
> To: Tom Liu
> Cc: 'Tim Müller'; gtk-app-devel-list gnome org
> Subject: Re: Help: how to disconnect a signal?
>
> /*********************
>  CODE TO CONNECT
> *********************/
> gint sig_id = g_signal_connect(G_OBJECT(obj));
> GList *l = NULL;
>
> /* first time NULL */
> l = g_object_get_data(G_OBJECT(obj), "handler_list");
> l = g_list_append(l, sig_id);
> g_object_set_data(G_OBJECT(obj), "handler_list", l);  
>
>  /***************************************
>  CODE TO DISCONNECT ALL HANDLERS
>  ***************************************/
> GList *list = g_object_get_data(G_OBJECT(obj), "handler_list");
> GList *l = list;
> while (l) {
>    g_signal_handler_disconnect(G_OBJECT(obj), (gint )l->data);
>    l = l->next;
> }
> list = (g_list_free(list), NULL);
> g_object_set_data(G_OBJECT(obj), "handler_list", NULL);  
>
>
> Cheers,
>                    -Tristan
>
>
>
>
> Tom Liu wrote:
>
>  
>
> > I didn't record the id of the signal and don't know how many functions
> > conneted. I just want to disconnect all the connected functions.
> >
> > The thing I need this is I am porting the Motif to GTK.
> > In the old program, I have a pice of code like:
> >         Widget widg;
> >         XtRemoveAllCallbacks(widg, XmNmodifyVerifyCallback);
> >         XtRemoveAllCallbacks(widg, XmNactivateCallback);
> >
> > Thanks.
> >
> >
> >
> > -----Original Message-----
> > From: gtk-app-devel-list-admin gnome org
> > [mailto:gtk-app-devel-list-admin gnome org] On Behalf Of Tim Müller
> > Sent: Thursday, November 20, 2003 4:55 AM
> > To: gtk-app-devel-list gnome org
> > Subject: Re: Help: how to disconnect a signal?
> >
> > On Wednesday 19 November 2003 22:23, Tom Liu wrote:
> >
> >
> >
> >    
> >
> > > I want to disconnect all the "clicked" signal from a button. I spend
> > >   
> > >
> > >      
> > an
> >
> >
> >    
> >
> > > hour already, don't know how to use the function
> > >
> > > g_signal_handlers_disconnect_matched
> > >
> > > I tried: g_object_disconnect (G_OBJECT(w),"clicked") also. Doesn't
> > >   
> > >
> > >      
> > work.
> >
> > gulong id;
> >
> > id = g_signal_connect(button, "clicked", G_CALLBACK(onButtonClicked),
> > NULL);
> >
> > g_signal_handler_disconnect(button, id);
> >
> >
> > or:
> >
> > g_signal_connect(button, "clicked", G_CALLBACK(onButtonClicked), NULL);
> >
> > g_signal_handlers_disconnect_by_func(button, onButtonClicked, NULL);
> >
> >
> > See http://developer.gnome.org/doc/API/2.0/gobject/gobject-Signals.html
> >
> > Cheers
> > -Tim
> >
> >
> >
> >
> > _______________________________________________
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> > gtk-app-devel-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
> >
> > _______________________________________________
> > gtk-app-devel-list mailing list
> > gtk-app-devel-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
> >
> >
> >
> >
> >    
> --
> "A line of code is worth a thousand words"
>    -me
>
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