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PreviewKeyDown event has multiple entries for the same key sequence

Jul 24, 2012 at 7:10 PM

Hello,

I am trapping the PreviewKeyDown event and noticed that for any sequence, say Ctrl+Home, Home, whatever, the event handler gets called 4 times.

Why is that?

Is it safe to process one out of every four calls, namely can I count on every machine that the event gets raised four times per key sequnece?

Thanks in advance,

Sarah