[Gtk-sharp-list] waiting for an asynchronous operation to finish

[Ben Maurer]

On Fri, 2005-09-30 at 09:07 +0200, Jeroen Zwartepoorte wrote:
> On 9/29/05, Ben Maurer <bmaurer at ximian.com> wrote:
> > > System.Threading.Thread has Suspend() and Resume() methods, but how do
> > > these interact with the GLib mainloop?
> >
> > That would stop the thread completely. You don't want that. Basically
> > Suspend/Resume == bad.
> >
> > What you want to do is this:
> >
> > Drive.Mount (delegate (bool succeeded) {
> >        Application.Invoke (delegate {
> >                if (!succeeded)
> >                        DisplayErrorDialog();
> >                else
> >                        DoStuff ();
> >        });
> > });
> 
> The problem with that is that the location where i call Drive.Mount is
> inside a TreeView TestExpandRowHandler. I need to know if the
> Drive.Mount call succeeded or not before i can return from that
> handler (args.RetVal determines whether or not the row can be
> expanded).
> 
> If i read your code right, it just defines a new delegate which gets
> called at a later stage? (the code above doesn't wait for Drive.Mount
> to report back)

well, blocking on the file system is probably not-the-best-idea (TM). if
it is NFS and I just went off-line, it will freeze.

Try what nautilus does, add a fake entry "Loading..." and if it turns
out that there are no children, just remove it.

-- Ben