Re: help on scrollbars

[David Nečas (Yeti) <yeti physics muni cz>]

On Tue, Aug 29, 2006 at 02:11:09PM +0200, zz excite it wrote:
> I'm working on an app and I'm facing the need to access the
> button at the end of a vertical scrollbar of a scrolled window
> to do something like a
>
> gtk_button_clicked()
>
> to ensure that the widget (a treeview) contained in it
> gets scrolled to the end with whatever screen resolution
> is used.
>
> This obviously in the assumption that this little buttons
> are real gtk_buttons............
>
> I read most of the source and reference but haven't found
> nothing usefull and I also have tried some alternatives like:
>
> void list_vertical_autoscroll(GtkWidget *list)
> {
>       GtkAdjustment *adjustment;
>
>       adjustment = gtk_tree_view_get_vadjustment(GTK_TREE_VIEW(list));
>       gtk_adjustment_set_value(adjustment, adjustment->upper += ARBITRARY_BIG_NUMBER);
>       /*or*/
>       gtk_adjustment_set_value(adjustment, adjustment->upper +adjustment->page_size); 
> }
>
> that achieve some scrolling but not to the very end of the treeview.
>
> The only thing that works the way i would like it is to click with mouse
> on the v button that's why I'm looking for a way to fake this click
> with a function.
>
> Could someone make me see the light?

As far as I understand you just need to copy the couple of
lines from step_forward() (or step_back()) in gtkrange.c,
replacing g_signal_emit() with g_signal_emit_by_name().

Yeti


--
Anonyms eat their boogers.