[REBOL] Flushing the event queue
From: Christophe::Coussement::mil::be at: 26-Jan-2006 10:11
I did contact REBOL Feedback for help regarding our problems (see thread
Request info about
Crash (Should not happened)" error"). My question
was: how dod I clear the event queue. Here is the answer, I hope this
will be useful to somebody:
[quote]
One thing to check is that you do not call WAIT during the processing of
the event inside ENGAGE or any other feel function. That is, in theory,
you should never call WAIT in your code anywhere except the one that is
inside of DO-EVENTS. (And of course, DO-EVENTS should only appear once
in your code if you use VIEW/new to
start.)
With regard to the idea of clearing the event queue, it is possible.
But, it can also be a problem, because what if the user clicked on
something or pressed a key?
It would be lost.
The event queue is actually a port, but the CLEAR action is not allowed
for it. However, you can still remove all the events by calling PICK on
it until NONE is returned:
until [none? pick system/view/event-port 1]
[end-quote]
--christophe
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