Re: Widgets overlap

[Tristan Van Berkom <tristan van berkom gmail com>]

Martyn Russell wrote:

> On Tue, 2006-05-30 at 15:11 +0200, Christophe HAUSER wrote:
>  
>
> > Hello,
> >
> > I would like to overlap two Gtk widgets, but I can't
> > find any suitable container.
> > An idea ?
> >    
>
> Have you looked at the GtkLayout?
>
>  

Someone mentioned GnomeCanvas; I haven't ever used the canvas so I dont know
specificly about the canvas but GtkLayout does not have any support for 
z-ordering.

From what I understand though: "widgets do not overlap in GTK+... period."

Few specifics I can think of off-hand that would make it difficult to 
overlap widgets:
   o GTK+ double-buffering mechanism would need to be adjusted probably 
for cases
      where both overlapping widgets are GTK_NO_WINDOW widgets
   o Expose events would have to be handled by both child windows... 
also for GTK_NO_WINDOW
      widgets.
   o The z-order of platform specific GdkWindow backends would have to 
be handled so
      that events are always delivered to the correct widget.

Cheers,
                                  -Tristan