OnKeyDown - two events?

[Drew]

I'm having a problem with my OnKeyDown method generating two events
when a hardware button is pressed. It's like the button is getting pressed
twice.

Has anyone experienced anything like this?

Any ideas?

Thanks,

Drew

 

[Peter Foot [MVP]]

Which button is this occurring with? And what device are you using?

Peter

 

[Drew]

I am using a compaq ipaq 3835 for testing.

I am using the up arrow hardware button.

I was able to work around this by filtering
the OnKeyDown method with KeyEventArgs.KeyData
and now it's only receiving one event.

However, I did some testing on the desktop using the
full .NET framework and the behavior is not the same!

OnKeyDown (without any filter) only receives one event when I press a key.

Could this be a bug or am I not understanding something?

Drew

 

[fd123456]

Hi Drew,

If I'm not mistaken, the hardware keys can sometimes send several
KeyDown events, because they have several mappings associated with
them.

If I remember well, on my iPaq h1930, the middle button sends three
events : one is "Return", the second is "Select" and the third is
"F23" (why F23???). Besides, when a MessageBox is shown, it doesn't
clear the buffer, which can complicate the matter further...

I had to resort to the same filtering you do...

HTH,

Michel