Re: [Java-gnome-developer] Assertion failure while drawing on DrawingArea

[Jeff M. <ku...@gm...>]

I have no reason to believe that it is fixed in cvs but there have been
numerous changes in cvs.  In fact, cvs is currently quite unstable.  We
are in the process of adding support for 64-bit platforms.  Anyway,
I will take a look at your example and see if I can find the bug in
java-gnome.


On Sun, 12 Dec 2004 15:10:40 +0000, Jaime <re...@sa...> wrote:
> On Sun, 2004-12-12 at 09:53 -0500, Jeff Morgan wrote:
> > What version of java-gnome are you using?  Are you using
> > cvs HEAD?
> >
> >
> 
> Sorry Jeff, I should have mentioned in my original email that I'm using
> the latest stable releases available from ftp.gnome.org i.e.
> libgtk-java: 2.4.6
> libgnome-java: 2.8.2
> libglade-java: 2.8.2
> libgconf-java: 2.8.2
> 
> Do you know whether this is something that's been "fixed" in cvs (if so,
> I'll download cvs and try to compile it)
> 
> Thanks, Jaime
> 
> 
> 
> > On Sun, 12 Dec 2004 14:08:57 +0000, Jaime <re...@sa...> wrote:
> > > Hi folks.
> > >
> > > I've tried to write a simple little program to draw on a DrawingArea,
> > > but without success. I get the following assertion failure at runtime:
> > >
> > > (java-gnome:2393): Gdk-CRITICAL **: file gdkdraw.c: line 338
> > > (gdk_draw_point): assertion `GDK_IS_DRAWABLE (drawable)' failed
> > >
> > > Could anyone please tell me where I'm going wrong? In fact, a pointer to
> > > any example code which successfully draws onto a DrawingArea would be
> > > just as good! Thank you,
> > >
> > > Jaime :-)
> > >
> > > <snip>
> > > package drawingAreaTest;
> > >
> > > import org.gnu.gtk.DrawingArea;
> > > import org.gnu.gtk.Gtk;
> > > import org.gnu.gtk.Window;
> > > import org.gnu.gtk.WindowType;
> > > import org.gnu.gtk.event.ExposeEvent;
> > > import org.gnu.gtk.event.ExposeListener;
> > > import org.gnu.gtk.event.LifeCycleEvent;
> > > import org.gnu.gtk.event.LifeCycleListener;
> > >
> > > public class Test {
> > >
> > >   DrawingArea area = null;
> > >
> > >   Window window;
> > >
> > >   Test() {
> > >     window = new Window(WindowType.TOPLEVEL);
> > >     window.setTitle("Drawing Area Example");
> > >     window.addListener(new LifeCycleListener() {
> > >       public void lifeCycleEvent(LifeCycleEvent event) {
> > >       }
> > >       public boolean lifeCycleQuery(LifeCycleEvent event) {
> > >         if (event.isOfType(LifeCycleEvent.Type.DESTROY)
> > >           || event.isOfType(LifeCycleEvent.Type.DELETE)) {
> > >           Gtk.mainQuit();
> > >         }
> > >         return true;
> > >       }
> > >     });
> > >     area=new DrawingArea();
> > >     window.add(area);
> > >     area.addListener(new ExposeListener() {
> > >       public boolean exposeEvent(ExposeEvent event) {
> > >         System.out.println("Expose event: "+window.getWindow());
> > >         window.getWindow().drawPoint(20, 20);
> > >         return false;
> > >       }
> > >     });
> > >     window.showAll();
> > >     System.out.println("Should be printed before expose event");
> > >   }
> > >
> > >   public static void main(String[] args) {
> > >     Gtk.init(args);
> > >     new Test();
> > >     Gtk.main();
> > >   }
> > >
> > > }
> > > </snip>
> > >
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> >
> >
> 
> 
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> 
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-- 
Jeffrey Morgan

"The highest reward for a man's toil is not
what he gets for it, but what he becomes by it"
    - Jon Ruskin