Reading keyboard state without keylistener ??

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axel.kowald@rub.de - 11 Jun 2007 15:19 GMT

Hi everybody,

I would like to read the current keyboard state (is button X pressed)
without a keylistener.
The problem is that I need to recognize a keypress in my java
application even if the application is not the foreground window and
has no keyboard focus.

My application runs in a looping thread and during each cycle I want
to check the current state of the keyboard.
How can I do this?

Many thanks,

axel

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Andrew Thompson - 11 Jun 2007 15:31 GMT

...

>...need to recognize a keypress in my java
>application even if the application is not the foreground window and
>has no keyboard focus.

I doubt it can be done in pure Java. Try JNI.

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Andrew Thompson
http://www.athompson.info/andrew/

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cyprian - 11 Jun 2007 18:09 GMT

> axel.kow...@rub.de wrote:
>
[quoted text clipped - 10 lines]
>
> Message posted viahttp://www.javakb.com

the focus hierarchy flows from Windows before it gets to your
component, you'll always get a FOCUS_LOST response because the window
that is the focus cycle root will return DEACTIVATED, no show in java
for that.

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