I wrote a very trivial program that does exactly this in order to
illustrate a line drawing bug along time ago. Perhaps this program
may be used as an example. See:
http://bugzilla.gnome.org/showattachment.cgi?attach_id=8571
Regards,
Dov
On Mon, Feb 09, 2004 at 03:07:04PM -0500, Jack Chen wrote:
> --- Juhana Sadeharju <kouhia@xxxxxxxxxxxx> wrote: > >From: Jack Chen
> <jacks_small_world@xxxxxxxxx>
> > >
> > >Hi, I think the official GTK programming tutorial on the official
> > GTK's
> > >site is the best resource for programming GTK I've found.
> >
> > So, the situation is pretty bad.
> >
> > I checked drawing area widget page in the tutorial but it is empty.
> > The drawing area widget is at the top among widgets where I start
> > wishing better documentation and tools. It is the place where GTK+
> > ends too soon.
> >
> > Regards,
> > Juhana
>
> Yeah I know what you mean: there's no documentation for drawing_area.
> But actually drawing area is the most primitive widget because you have
> to handle all the events yourself, and you can draw anything on it
> using the GDK library which has all the functions for drawing shapes. I
> have made a program using the drawing_area widget to display OpenGL
> rendering, and most of the things I need to remember are that
>
> - the "configure" event is sent when the widget is first appeared, and
> - the "expose" event is sent when the widget needs to be redrawn.
>
> Other than that, there's nothing too much about the drawing_area
> widget... you just draw whatever you like on it. Oh and I got these
> information from a book about programing in GNOME, and from the code
> examples that come from GtkGlExt, which lets you make OpenGL renders in
> a GTK widget.
>
> I don't remember the name of that GNOME book right now, but if you are
> interested I can search it for you.
>
> Bye.
>
> Jack
>
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