get last focus window

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In .net cf , Can i get last active window handle when my form getfocus ?
I know , in evc , WM_ACTIVATE hwndPrevious is the handle to the window
being deactivated .but how can get this value in c#?

 

[RAVI KRISHNASWAMY [MSFT]]

There is no direct way to get access to Control that just lost focus, you
can build a solution yourself by hooking into LostFocus on all the controls
and keeping track of it explicitly.

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