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Timesharing - getting multiple routines to run at once

I have a MDI application. Each child form has it's own routines. after starting a routine on one form and then starting another routine on another form, the first form routine quits or locks up. I would like to time share between the two. How can I do this - run multiple routines at once?
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Z_Beeblebrox
The easiest way is to put DoEvents all over the place. This will give you quasi time slicing. A better way may be to use out of process ActiveX exe's. It may also be possible to multi-thread your application but I have no idea how.

Zaphod.
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rspahitz
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Spikeman

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Thank you. I have timers currently in my code but since I'm monitoring com ports for data it makes putting my routines in a timer difficult as I'm triggering off of the MScomm_Oncomm event. Thanks again!
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Spikeman

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Thank you. I do have doevents all over but since I was using the MScomm_Oncomm event to trigger on Com port inputs it kept the focus tied up there. I should of mentioned this in my question. Thanks again.