[Gtk-sharp-list] Problem with Gnome.Canvas

[Sergio Paracuellos]

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Hi!

I have a Canvas with a CanvasGroup with a PixBufImage like a timetable
and in each rectangle of the Canvas a CanvasRect with a label (for
example).=20
If I get the CanvasItem with GetItemAt(x,y) where x e y is the position
of each of my CanvasRect that I want to delete. I do this:

CanvasWidget item =3D (CanvasWidget) canvas.GetItemAt(c.getWidget.X,
c.getWidget.Y);

/* clean a empty rectangle */
item.Widget.Visible =3D false;

c is a class with info of all of the positions in the timetable.

And the label dissapear. That's correct, but when I push again AddButton
for adding other CanvasRect:

private void OnAddSubject (object o, EventArgs args) {
addSubj =3D new AddSubjectWindow(mySubjectList,canvas.Root(), itemList);
addSubj.Show();
}

Where canvas.Root() is the main CanvasGroup Widget, the application
crash with the following error message:

(<unknown>:9487): GnomeCanvas-CRITICAL **: file gnome-canvas.c: line
3723 (gnome_canvas_request_redraw): assertion `GNOME_IS_CANVAS (canvas)'
failed


It is a bug of Gnome.Canvas? Am I doing something wrong?

Thank to all!

Regards,
	Sergio



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