[Freeciv-Dev] Re: focus lost irrevocably on game startup (PR#506)

[Vincent Ugenti <skorpion@xxxxxxxxxxxxx>]

Thue wrote:

> Den fre, 11 aug 2000 skrev skorpion@xxxxxxxxxxxxx:
> > Full_Name: Vincent Ugenti
> > Version: 1.11.0
> > Distribution: Built from source
> > Client: Gtk+
> > OS: Linux
> > Submission from: (NULL) (167.206.61.205)
> >
> >
> > I have observed that, if the game is started as one is scrolling the chat
> > window with the mouse, the game stops responding to mouse events.
> >
> > The country selection window opens but does not respond to mouse clicks.
> > Also the main window stops responding (although I would wager that is
> > supposed to happen). The only way to fix this is to hit ctrl-c in the shell
> > or use xkill and start a new game.
> >
> > I would imagine in practice this is quite a rare occurence, however it has
> > happened to me. Possibly it has happened to other people as well but they
> > could not reconstruct what had happened quite so easily. At any rate, you
> > will most likely need 2 computers to verify this bug since you can't start
> > the server and be scrolling the mouse at the same time on one computer.
> >
> > I was using the GTK client, have not tested the Xaw client for this bug.
>
> I can reproduce this, but I have no idea how to fix it :(
> And you can do it with one computer (fast Celeron 400 even), you just have
> to be _very_ fast :)
>
> -Thue

The bug system will not let me reply on the BBS so I am just going to tell you a
few things I know about GUI programming in general. As far as I know, there are
no thread-safe GUI tool kits. The mouse scroll is most likely being monitored by
one thread as another thread causes the new window to pop-up. I ave not looked
through the code so this is not a "fact" but I have seen enough similar errors
that I can say with confidence it is worth checking into.

Vincent