Re: Problem setting icon for Gtk2::StatusIcon

[zentara <zentara1 sbcglobal net>]

On Mon, 2 Mar 2009 13:33:54 +0100
January Weiner <january weiner gmail com> wrote:

> Hello,

> Problem:
>  1) when the icon is changed, the icon first disappears completely
> from the notification area, and then it appears again. Throughout this
> process, the notification area "flickers" (adapts to the removed /
> inserted icon).
>  2) sometimes the second (gtk-refresh) icon is not displayed at all,
> especially if the GUI is busy doing other things (ie. I am moving the
> cursor, typing, ...)
>
> What am I doing wrong?
>
> Here is example code that demonstrates (on my system...) the problem:
>
> #!/usr/bin/perl
>
> use strict   ;
> use warnings ;
> use Gtk2 -init;
>
> my $status_icon = Gtk2::StatusIcon->new_from_stock('gtk-apply') ;
> my $timer = Glib::Timeout->add( 1000, \&update, $status_icon ) ;
>
> Gtk2->main() ;
>
> exit( 0 ) ;
>
> sub update {
>  my $icon = shift ;
>
>  $icon->set_from_stock('gtk-refresh') ;
>  while( Gtk2->events_pending() ) { Gtk2->main_iteration() ; }
>  sleep 5 ;
>  $icon->set_from_stock('gtk-apply') ;
>
>  return 1 ;
> }

Your script runs fine here, as is; BUT having a "sleep 5" in the main code
thread look awfully bad.  It's almost a rule.....do not use sleep in an event loop system,
like Gtk2.

You probably should change your timeout value to 5000, and have your callback
change the image (toggle) , and get rid of the sleep.


zentara


-- 
I'm not really a human, but I play one on earth.
http://www.zentara.net/~zentaran/My_Petition_to_the_Great_Cosmic_Conciousness.html