Re: Question about scrollbars

["Sebastian Geerken" <S Geerken ping de>]

On Fri, Mar 02, 2001 at 10:18:09PM -0500, Havoc Pennington wrote:
> "Sebastian Geerken" <S Geerken ping de> writes: 
> > Yes, this is what I currently do (I think a counter is a bit safer
> > that a flag), but I ask whether there is a simpler way, because the
> > blocking gets quite complicated, and, as I wrote, it is still buggy.
> > (I guess there are thousands of side effects?) So I thought of a way
> > to make it simpler than to workaround and search for bugs.
> >
> > Unfortunately, there are no signals from GtkRange to Gtk[VH]Scrollbar
> > (not GtkAdjustment) for this.

I've solved this problem by connecting all relevant events to two
callbacks, which compare the value before and afterwards. Apologies
to all who find this ugly, you are totally right, and this is
probably not the final solution. But currently it works.

> There's no good way, no. (Not even conceptually, because any such
> mechanism would break the model-view-controller paradigm and result in
> fairly unrobust code.)

Yes, this paradigm works fine, in most cases (and the scrollbars are
not the only source I have to check), but supposed that robust code
aims to result in working programs, my current implementation works
better than the old one (blocking by flags/counters). ;-)

However, I'll work on a cleaner solution (when I have the time for
it).

Sebastian