Allows Windows console events to be caught and handled. To
handle a console event, call installHandler passing the
appropriate Handler value. When the event is received, if the
Handler value is Catch f, then a new thread will be spawned by
the system to execute f e, where e is the ConsoleEvent that
was received.
Note that console events can only be received by an application
running in a Windows console. Certain environments that look like consoles
do not support console events, these include:
- Cygwin shells with CYGWIN=tty set (if you don't set CYGWIN=tty,
then a Cygwin shell behaves like a Windows console).
* Cygwin xterm and rxvt windows
* MSYS rxvt windows
In order for your application to receive console events, avoid running
it in one of these environments.
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