Cleaning up after the Close button is pressed

Simon Marlow marlowsd at
Fri Jan 21 12:41:37 CET 2011

On 20/01/2011 05:27, Colin Hume wrote:
> Hi everyone,
> I posted previously on haskell-beginners about an issue which would have
> been better directed to this list. Since then, I have revisited the
> issue and am now even less certain of its cause.
> I have to perform cleanup when my application terminates.
> GHC.ConsoleHandler handles cleanup from Ctrl-C and Ctrl-Break very
> nicely under Windows. My sample handler and main function are shown at [1].
> When I press Ctrl-C and Ctrl-Break during threadDelay, messages are
> written to console_event.log as I expected. When I press the Close
> button during threadDelay, no message is written to console_event.log.
> Am I missing something fundamental about handling the Close button or
> installing handlers?
> In case it makes a difference, I'm using GHC 6.12.3 under Windows XP.

I don't know a great deal about this, but if you think it might be a bug 
please report it at

giving as much information as you can.


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