Re: problems with the redraw of widgets and callbacks with long operation time

[Ignacio Nodal <inodal teleline es>]

rsteinke w-link net wrote:

> From: Ignacio Nodal <inodal teleline es>
>
> > Hi,
> >
> > In my program I have a window where I select a VRML file to load, press 
> > OK and in the button callback, I hide this window and call my function 
> > to read the VRML file (I use CyberVRML97 for this).
> >
> > The problem is that my GTK+ application seems to be freezed during the 
> > load. The main window doesn't care about my "expose_event" callback 
> > until the load ends.
> >
> > I don't like this behaviour,  how could I avoid this?
>
> You're probably not giving the mainloop any time to run during the load.
> Look at the documentation on the gtk mainloop (or, better, the glib mainloop)
> for instructions on how to do this.
>
> Ron Steinke


I've tried with:

 while (gtk_events_pending())
	gtk_main_iteration();

before calling my VRML load function, but gtk_events_pending returns 0.

I've also asked for gdk_events_pending, since i'm working with 
GtkGLArea, being a "subclass" of GtkDrawingArea , but this one returns 0 
 also.

I'm a bit lost...

Thanks in advance,

Ignacio