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Re: [open-cobol-list] GUI -- wxWidgets?

From: Brian Tiffin
Subject: Re: [open-cobol-list] GUI -- wxWidgets?
Date: Wed, 18 Feb 2009 12:05:10 -0500
User-agent: KMail/1.9.9

Thanks for the info John.

I'm not totally sure (having not experienced the incompatible version bumps) 
we can ensure the CBL_OC_GTK_  layer IS compatible across all the versions 
though.  Can't we?  Are there subtle run time issues with their releases that
break things like callback reliability etc?   Or are they "just" API name and 
parameter changes? (which we can handle with a little bit of autoconf magic).

And now Ulf has offered up yet another option that seems worth pursuing.
(But I'm pretty Roger is unlikely to change ACCEPT DISPLAY unless we can 
guarantee cross-platform to as many targets as cobc now functions on), so 
that will require more than just an X11 layer, but something with Windows 
dressing as well.


On February 18, 2009 09:58:52 am John Culleton wrote:
> On Wednesday 18 February 2009 09:48:18 am Brian Tiffin
> wrote:
> > Hello everyone
> >
> > I replied to the original poster with
> >
> >
> >
> > and he seemed pretty happy.
> >
> > Gilles;  I looked at Qt with some keen interest as I use
> > KDE and I like the features.  BUT; Qt is native C++ so it
> > makes writing a binding layer one step more hassle
> > (extern "C" {} wrappers everywhere) so GTK+ will be the
> > first GUI target for OpenCOBOL, (from my point of view at
> > least; others are more than welcome to add other
> > linkage), being straight up C and the linkage does not
> > require any mucking about with the C++ linker name
> > mangling, .
> >
> > With the recent addition of libguile linkage How-To, GTK+
> > can also be accessed from the Scheme layer.  Anything on
> > the Perl side can be accessed through the cob_perl side,
> > so wxWidgets is definitely a viable option already.  I'm
> > still working with Rildo's codebase to get smooth
> > integration with Tcl/Tk (currently functional and samples
> > have been posted), but I'd like to spend my whimsical
> > time and attention on the GTK bindings.  There are a bag
> > load of features that Glib, GDK and GTK open up.  One
> > next step may be peeling back access to the GtkBuilder
> > feature for XML UI design for those so inclined.
> >
> > =====
> > A small pleading;  If anyone really wants to dig in, I'd
> > prefer we work together on and
> > build up the GTK feature set.  There are thousands of
> > small functions to write and test and each one adds to
> > the pile of potential.
> > =====
> Unfortunately Gtk comes in multiple and incompatible
> versions. When I update to match application X then
> application Y stops working.  So I suggest that the Tk
> widget set is more stable and hence less heartburn for all
> of us.
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