Extending the example in the tutorial regarding system tray icons to show balloon messages fails with:
Use of uninitialized variable in subroutine entry at C:/Perl/site/lib/Win32/GUI.pm line 2842
I extended the tutorial to recreate the error I was getting with another script. Oddly, the NotifyIcon.pl (Notify Icon Tester) works as it should.
Win32::GUI 1.05 (dl and install from sourceforge)
Notify Icon Tester 1.01
Not sure if it's the deprecated ID or Window attributes that may be missing. Obviously, you need to adjust my test.pl to reference an existing ico file.
In my other script, $Window->ShowBalloon(0) does not complain, but the very next line $Window->ShowBalloon(1) does.
Let me know what information or testing may help solve this one.