Re: [perl-win32-gui-users] Is Win32::GUI::NotifyIcon thread safe?

[Jason P. <ma...@wa...>]

>
> Sat, 17 Jan 2009 12:11:56 -0800
>
Hi all,


I'm working on a program that, when launched, displays an icon (a

Win32::GUI::NotifyIcon object) in the Windows taskbar notification

area-often referred to as the "system tray". When one of the buttons on my

GUI is clicked, a separate "worker" thread is created so that my GUI remains

responsive while a background task executes in the other thread. Everything

is fine up to that point, but when the thread eventually finishes, my icon

disappears from the system tray and I get the following three lines of

errors:


Attempt to free non-existent shared string '_NotifyIcon1', Perl interpreter:

0x1cfc6f4 at C:/Perl/site/lib/Win32/GUI.pm line 3429 during global

destruction.


Unbalanced string table refcount: (1) for "" during global destruction.


Unbalanced string table refcount: (1) for "DELETE" during global

destruction.

I'm happy to post my code, if necessary, but I thought someone might be able

to quickly tell me whether Win32::GUI::NotifyIcon is thread safe.


Thanks,

Rob


Hey Rob,

I'll admit it has been a while since I've popped my head into this
mailing list, but I thought I could help on this one. First I have a
couple of questions tho:


   1. Is this thread in control of the NotifyIcon in *any* way?
   2. Which perl? 5.10 has some quirkiness I've noticed with threading
an certain parts of Win32::GUI if one isn't careful.
   3. Is it possible to pre-fork this thread and have it wait on
instructions? (this totally bypasses this entire problem)

Hope I can help :)

Jason