Re: GtkWidget "visibility-notify-event" and visibility.

[Chris Vine <chris cvine freeserve co uk>]

On Wed, 25 Mar 2009 16:24:57 +0300
Alexander <b3nder yandex ru> wrote:
> On Wednesday 25 March 2009, Chris Vine wrote:
> > On Tue, 24 Mar 2009 23:49:13 +0300
> > Alexander <b3nder yandex ru> wrote:
> > [snip]
> > > Thanks, GTK_WIDGET_VISIBLE() may help me. Is there any way to
> > > catch event when widget is actualy hiding? 
> >
> > You could use the hide signal that GtkWidget objects emit.
> >
> > Chris.
>
> I've tried to catch show and hide signals on GtkWidgetClass structure
> while widget class initialization ( in the way it done for
> GDK_VISIBILITY_NOTIFY and other widget events) and on
> g_signal_connect() while widget realization stage. 
>
> The second way just do nothing and the first way only emits show
> signal, but not hide one.

Alexander,

I think we must be at cross purposes because a hide signal cannot be
emitted on a widget until it has been shown, and during construction it
has not been shown.  In any event, I do not really understand what you
are trying to do so I do not think I help you any further on this I am
afraid.

Also be careful with expressions like "catching" a signal, as GObject
signals have nothing to do with unix asynchronous signals.  Also, you
use g_signal_connect() to connect to the signal, not to emit it.

Chris