Re: Terminate worker thread when Dialog closes

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Si wrote:
I have a CDialog that spawns a worker thread. How do I terminate the thread when the dialog box closes (and the CDialog class is destroyed)?

Signal the worker thread to close itself, and then wait until it has closed.

If the thread is executing a loop you can signal it by setting a bool that it tests. If the thread is suspended by a WaitFor... call then use an event (CreateEvent, SetEvent) in the list of things it is waiting for. When the thread senses the signal it must return from the thread function.

The dialog code should send the signal, then call WaitForSingleObject with the thread handle. The wait makes sure the dialog is not destroyed while the thread is accessing dialog data. WaitForSingleObject will return after the thread has exited, then you can continue to destroy the dialog.

--
Scott McPhillips [VC++ MVP]

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