Re: Viewports and scrollbars

[Antonio Coralles <noche suapie reflex at>]

Lars Luthman wrote:

> I have two custom widgets derived from DrawingArea that I want to be
> scrollable. 

Maybe you should derive your widgets from Gtk::Layout - that's somekind 
of drawing area with native scolling support 
http://www.gtkmm.org/docs/gtkmm-2.4/docs/reference/html/classGtk_1_1Layout.html

> I want the first widget to be scrollable both horizontally
> and vertically, and the second should only be scrollable horizontally,
> using the same scrollbar as the first widget. I suppose the way to do
> this is to put both widgets in Viewports and connect the scrollbars to
> the viewports somehow, but I'm not sure how to do this. I've tried just
> setting the adjustments of the viewports to the adjustments of the
> scrollbars, but then the viewports always grow to the size of their
> child widgets, so I don't get any scrolling at all.
>
> Does anyone know how to do this? The custom widgets may resize
> themselves at any time too. I have a sketch of what I want here:
>
> http://www.d.kth.se/~d00-llu/dino/figure3.png 
> <http://www.d.kth.se/%7Ed00-llu/dino/figure3.png>
>
> The horizontal scrollbar should control both viewports, and the vertical
> should only control the upper viewport (there are no viewports there, I
> couldn't insert them in glade).
>
> --
> Lars Luthman
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