Re: expose_event

[Nabil Sayegh <nas sayegh de>]

Hi Paul,

Am Don, 2002-09-12 um 03.19 schrieb Paul Davis:
> your question isn't quite clear to me. 
[...]
> If you want to clear the GtkLayout, remove the widgets from it.

The widgets inside shall remain. It's the drawings I want to remove.
I found gtk_widget_draw over the complete size does what I want, but it
flickers.

I think you're right. At the moment it's working but is very inelegant.
In the beginning I wantet to use the Canvas but it wasn't usable with
glade && C++
But since I already switched to C for that project I could give Canvas a
try. I hope it's working with glade && gtk+1.2
 
> Perhaps you'd be better off explaining what you're trying to do.

I'm writing a db-designer much in the fashion of a UML tool, but more
specialized and not so overfeatured.
I need movable tables and need to connect them with lines.
Moving the tables is no problem.
The lines I'm drawing on the layout->window using gdk_draw_line.
To update the graph I need to remove the lines and draw new ones.
The expose event seemed like the right place for this ;)
If there was a line-widget everything would be much easier.

> BTW,
> I spent a year or two using a GtkLayout for the kind of thing you
> sound as if you might be trying to do. When I eventually used the
> Canvas, I realized I had made a serious error not starting out with
> it.

Is Canvas working with glade && 1.2 ?
If not:
Is 2.0 stable (enough) ?
Is glade for 2.0 usable ?

Thanks for your help.
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