Re: Alt+Button click and events

[Hans Nieser <h nieser xs4all nl>]

On Wed, 2008-07-09 at 11:56 +0200, Toralf Lund wrote:
> richard boaz wrote:
> > not sure what's could be going wrong since you didn't supply any code, 
> > but...
> I thought I would ask some fundamental questions before I presented a 
> lot of complex code that would more likely than not only confuse 
> everyone... Or alternatively, I don't want to spend time on writing a 
> simple example before I know if the functionality is actually expected 
> to work...
> > first, see the accelerator documentation:
> >
> > http://library.gnome.org/devel/gtk/stable/gtk-Keyboard-Accelerators.html#gtk-accelerator-set-default-mod-mask
> >
> > and to "see" if the ALT key is pressed, in your mouse callback:
> Ah, but it's not the ALT key I don't see, it's the actual button 
> click/release. That is, the callback simply isn't called, so if I do:
> 
> gboolean mouse(GtkWidget *widget, GdkEventButton *event, gpointer nil)
> {
>     fprintf(stderr, "This is the mouse callback\n");
> 
> }
> 
> I simply don't see the text on the console when I press the button. Or 
> that is, I know the events are caught in the sense that I do get the 
> printout if I press the button alone, or even along with Ctrl or Shift. 
> But, once Alt is down, I can click away as much as I like, I just don't 
> see anything no matter what.
> 
> - Toralf
> 

Could it simply be your windowmanager eating the ALT key presses? I know
that metacity I believe by default does that on my GNOME desktop. I had
to configure it not to, to be able to use any key-shortcuts involving
the ALT key in Blender, for example.