An application will be marked as not responding by windows if it hasn't interacted with the system for a minute or two.
I had a small app once, that had to spin through 10k records, and it would be marked as not responding until it finished the tight loop and reported the results.
So I just added a call to repaint the window every N times through the loop, and windows was happy from then on.

The forceful terminate is a separate, if related issue, from the regular not responding status.

In reply to Re^2: Applications running status in Windows Task Manager by SuicideJunkie
in thread Applications running status in Windows Task Manager by shan_emails

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