Alexandre wrote:
> Hi
>
> I'm creating a widget, a plotting widget, and I have done a scale widget
> too. So, I want that the plotting widget has a child, the scale widget, to be
> it's axis.
> So, I fill the "allocation" structure of the scale widget to the position I
> want, and then I call gtk_widget_set_parent (scale, plot). But It
> doesn't works, the expose function of the scale widget is never called
> (neither the realize, configure.. and the others I think).
>
> I don't know if it's the right procedure to add a child widget..
>
> If someone could help me, I would be glad.
Hi Alexandre,
Parenting a widget is not a simple matter of setting the values
of a childs allocation struct, you should never man-handle widget structures
like this - your container widget must properly implement the GtkContainer
interface (which, for your added confusion - is actually implemented as
an abstract class and not an interface, but thats besides the point...).
Your best bet is to look at the gtk+ code for a container that works
similar to how your container will work and then borrow the groundworks,
for example - you must implement ->forall(), ->add(), ->remove() etc...
you must gtk_widget_size_allocate() some screen realestate for your children
when your container widget is resized etc.
Cheers,
-Tristan
_______________________________________________
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
