Re: Reshowing Icons in a Grid (Andrew Potter)

[Marshall Lake <mlake mlake net>]

> > I have 10 different icons stored in 10 files.  I want to display these 10
> > icons in different locations in a gtk_grid_new().
> >
> > It works fine once.
> >
> > If I gtk_widget_destroy(grid), create a new grid, and try to display these
> > 10 icons a second time (some in different grid locations and some not) I get
> >
> > gtk_grid_attach: assertion `gtk_widget_get_parent (child) == NULL' failed
> >
> > and several
> >
> > gtk_grid_attach: assertion `GTK_IS_WIDGET (child)' failed
> >
> > However, if I re-load the icons from their files after
> > gtk_widget_destroy(grid) it works fine the second time.

> Most widgets are "floating" on creation. Then when you add them to a 
> container they get sinked. When you destroy the grid, it unrefs all its 
> children before it is destroyed. If that is the only reference your 
> icons, they are destroyed as well.
>
> You can g_object_sink_ref(your_icon) after you create them the first 
> time, then you should be able to add them to new containers after they 
> are destroyed.

That's the ticket!  Thanks.  One minor change ... it should be 
g_object_ref_sink() rather than g_object_sink_ref().

--
Marshall Lake -- mlake mlake net -- http://www.mlake.net