Regarding test the key of keyboard with labview question

[brightxie1]

 

I want to test key of the keyboard with labview, I find the example " Basic Input Demo.vi", I try it then can test some key,

but have some function

key don't test, example ,Printscreen key, notebook Fn, etc.

I hear that each key has the keycode , can I read it ?

Do you help me to solve the question?

Tks and best regards!

Bright

[zou]

Try this VI.

[brightxie1]

Thanks for you information. but it don't read some function key, eg: Printscreen key etc,

[王晓建]

Windows does not send any kind of key down message to the window when print screen is pressed. So maybe searching for some lower level Windows APIs will be a possible way.

[brightxie1]

Thanks, I hear that applying  windows dll and hook can solve the question, but I don't know how to use hook.

[zou]

Hook is over kill.

Just poll it.

Take a look GetKeyState

[brightxie1]

Hi zou, I don't find GetKeyState file.

[brightxie1]

 I want to get key state and get function key state but don't action. eg, press Win flag key , start menu will to pop-up , I want to read the key state,but

start menu will not to pop-up.

[zou]

GetKeyState is an WinAPI.  You can find it on msnd.

[zou]

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@brightxie1 wrote:

 I want to get key state and get function key state but don't action. eg, press Win flag key , start menu will to pop-up , I want to read the key state, but start menu will not to pop-up.

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You need hook.

Or you can close the pop-up window yourself.