stopping an on-screen timer

[Richard Gaskin]

Sarah Reichelt wrote:
>> What is the best way to display a timer on the screen and then have it
>> stoppable?
>>
>> Something like the following would work for the timer
>>
>> on UpdateTimer
>>    -- update the display
>>    send UpdateTimer to me in 1 sec
>> end UpdateTimer
>>
>> My question is how best to stop the timer?
>>
>> Is it better to look for the UpdateTimer message in the pendingMessages and
>> cancel it?
> 
> I prefer the pendingMessages method and I don't store the ID of the
> message and cancel that because I am never sure that catches all the
> messages. So just loop through the pendingMessages cancelling any and
> all that match your handler name.

Good idea -- here's a handler Peter might find handy:

--
-- fwKillPendingMessage
--
-- Cancels the message named in pMessage.
-- If pMessage contains the word "all" then
-- all pending messages are cancelled.
--
on fwKillPendingMessage pMessage
   put the pendingMessages into tList
   repeat for each line tMsg in tList
     if (pMessage is "all") or (pMessage is among the items of tMsg) then
       cancel (item 1 of tMsg)
     end if
   end repeat
end fwKillPendingMessage



-- 
  Richard Gaskin
  Fourth World Media Corporation
  ___________________________________________________________
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