Problem solved! :

As I viewed first time an image with gtk_image_new_from_pixbuf,
when I tried to change that image later after pushing a button, nothing
happened, but
by using gtk_image_set_from_pixbuf instead, the image changes to the new one
(no need to use expose_event at all)

Thank you

2007/5/23, Luis Ramirez <[EMAIL PROTECTED]>:
>
> Thank you all!. I will try to re-read the Gtk docs following your advice
> and I will look for the"Scribble" sample.
>
> Luis
>
> 2007/5/20, David Nečas (Yeti) < [EMAIL PROTECTED]>:
> >
> > On Sun, May 20, 2007 at 08:39:43PM +0200, Cédric Lucantis wrote:
> > > Le dimanche 20 mai 2007 17:45, Luis Ramirez a écrit:
> > >
> > > It looks like you are confusing GdkPixbuf and GtkPixbuf. A GdkPixbuf
> > is not a
> > > widget but only an object storing a bitmap, while a GtkPixbuf is a
> > widget
> > > displaying a GdkPixbuf. Anyway, GtkPixbuf is deprecated so you should
> > use
> > > GtkImage instead.
> >
> > I'm not sure this cleared all the confusion as GtkPixbuf
> > does not exist.  The deprecated widget is called GtkPixmap
> > (and there's really no reason to use it) (and there's also
> > GdkPixmap which is a completely different beast).  To sum it
> > up:
> >
> > GdkPixbuf -- RGB[A] pixel buffer, used for basic image data
> >              representation and manipulation.
> > GdkPixmap -- off-screen drawable, i.e. off-screen relative
> >              of GdkWindow (both are GdkDrawables).
> > GtkPixbuf -- does not exist.
> > GtkPixmap -- deprecated widget, use GtkImage instead.
> >
> > Yeti
> >
> > --
> > http://gwyddion.net/
> > _______________________________________________
> > gtk-app-devel-list mailing list
> > gtk-app-devel-list@gnome.org
> > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
> >
>
>
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