Reading from keypad event handling

[phangmo]

Hi,
I have a small problem
I want to listen to keypad and trigger something, e.g. if the key is F5, my Labview program will do something even when Labivew program is not the active window in WindowsXP.

I can't use the event handling in Labview 7.0 because it only works when the Labview program is the active window.

Anyone can help me?
Thanks.

[zou]

XP (and other Window platforms) only sends keyboard messages to active windows.

The easy way to get around this is to poll keyboard status, LabVIEW provided a set of VIs to do this. Take a look functions -> Advanced -> Input Device Control palette.

To capture keyboard events (f your application window isn't active window), you have to create
your own dll, and set global hook.

George Zou
http://gtoolbox.yeah.net

[Philip_Courtois]

I created a small example for you that tracks the keyboard strokes.

Good luck!

[phangmo]

Hi,
Thanks for your helps.
Philip, could you save your file as the version 7.0 (which is my Labview version)?
Thanks a lot.

[phangmo]

Hi,
No need to resend the file.
I looked at the attached pic and coded for the labview 7.0

Thanks for your help

[Philip_Courtois]

I'm glad if you could use the code.I would appreciate if you would rate my previous post if you find the code helpful, thanks.

Merry Christmas!

[phangmo]

Merry Chrismast to you too.
Your post had been rated.
Cheers,