WMP UI Settings plugin doesn't respond to keystrokes

Hello,

I want to build a WMP UI Settings plugin. I've started with WMP SDK wizard,
then added some code from 'Search' example. All is fine except one thing -
the button I've added doesn't respond to keystrokes. But mouse works fine.

I suppose there's a catch with plugin window message loop, how can I fix that?

Thank you.
.

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