Essentially, you'd need to service both message queues concurrently. Tk has calls that allow you to service it's queue without entering MainLoop, but there probably isn't any effective way to call them once you've entered the native control's dispatch loop.

It would be worth trying invoking the ShBrowseForFolder() api from within a thread:

use threads;

asynch {
    ShBrowseForFolder( ... );
}->detach;

[download]

That should allow the main thread to run the Tk MainLoop concurrently with the Native controls dispatch loop.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Tk and native controls do not play along on Windows by BrowserUk
in thread Tk and native controls do not play along on Windows by nikosv

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