[Gtk-sharp-list] Responsive Applications

White Spirit wspirit at homechoice.co.uk
Sat Jan 6 12:55:11 EST 2007

Matteo Bertozzi wrote:

 > I don't have understand the  Responsive Application "Lesson" at
 > http://www.mono-project.com/Responsive_Applications
 > Why OnButtonClick() Code Freeze the GUI?
 > and how i could correct it?

The problem is here:

 >         Gtk.Application.Invoke (delegate {
 >             Thread.Sleep(1800 + 3600);
 >             button.Label = "End Hard Work";
 >         });

The code in the event handler is already running in the GTK thread. 
Your code attempts to pass the code to the GTK thread from within the 
GTK thread.

Gtk.Application.Invoke is only used within threads other than the GTK 
thread (because GTK# is not 'threadsafe').  So, if you had a thread 
called mythread, once that thread was started you would use 
Gtk.Application.Invoke to access GTK objects safely.

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