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Listening to the arrow keys [message #465209]

Thu, 08 December 2005 08:02

Eclipse User

Originally posted by: igor.dawg.gmail.com

hello,

I'm havin a problem. I need my application to listen to the 4 arrow keys
and i dont know how i should create those 4 listeners. Do i have to add
the listeners to the Shell, Displey or somewhere else? I dont
know....please help....

Thanks

Igor ROhal

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Re: Listening to the arrow keys [message #465287 is a reply to message #465209]

Thu, 08 December 2005 14:31

Eclipse User

Originally posted by: igor.dawg.gmail.com

Hmmm..... Listener(SWT.KeyDown) works fine, but I can't get to work
Listener(SWT.ARROW_DOWN(UP/LEFT/RIGHT))....could anyone please help me?
igor rohal

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Re: Listening to the arrow keys [message #465340 is a reply to message #465287]

Fri, 09 December 2005 08:30

Yves Harms

Messages: 80
Registered: July 2009

Member

Igor Rohal wrote:
> Hmmm..... Listener(SWT.KeyDown) works fine, but I can't get to work
> Listener(SWT.ARROW_DOWN(UP/LEFT/RIGHT))....could anyone please help me?
> igor rohal
>

yourControl.addKeylistener(new KeyListener(){

public void keyPressed(KeyEvent e) {
switch(e.keyCode){
case SWT.ARROW_DOWN:{
//do sth.
break;
}
//other cases here ...
}
);

Note: yourControl must have focus to get any key events.
An alternative is display.addFilter(), in that case you would always get
all key events of your application (regardless if yourControl has focus
or is visible at all)

Further reading: the book "SWT: The standard Widget Tookit"

Yves

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