http://bugs.winehq.org/show_bug.cgi?id=16127
--- Comment #8 from Richard Russell richard@rtrussell.co.uk 2011-09-13 04:27:18 CDT --- (In reply to comment #7)
The test script works for me in 1.3.28. A white dot appears where I click, the same happens in Windows XP. It seems that mouse clicks are captured correctly. Can anyone else retest?
Since this 'bug' was originally reported BBC BASIC for Windows has been fixed to correctly look at the sign of 'ax' rather than 'eax', so using a recent version of BB4W won't show up any issue, whether or not a sign-extension takes place in wine.