Keyboard events working apart from...

[aj_306]

HI ALL!

I am using the KeyListener to invoke methods when a key is pressed! it all works fine, but i wanted to add an "if" statement to say if "Q" is pressed then only active the other Keyevents..

For example NUMPAD 8 is used to Zoom into the image and NUMPAD 2 is used to zoom out, now i dont want the user to be able to press these and get output unless they have pressed the Q key... ive made an example code below to show what i mean kinda!!!

im thinking it may be wrong because if the user presses the Q key again then i wish to come out of that loop and disable the NUMPAD buttons again and so on.... counter maybe?? help!!!

Heres the code so far....

public void keyReleased(KeyEvent e) {


if (e.getKeyCode() == KeyEvent.VK_Q){

if (e.getKeyCode() == KeyEvent.VK_NUMPAD8) {

m_imagePanel.zoomIn();
adjustLayout();

}else if (e.getKeyCode() == KeyEvent.VK_NUMPAD2){

m_imagePanel.zoomOut();
adjustLayout();

}else if (e.getKeyCode() == KeyEvent.VK_NUMPAD5){

m_imagePanel.originalSize();
adjustLayout();
}

}

[nspils]

So you want to use the Q key event to be a toggle. If you press Q, it changes the value of the toggle, which is either on or off ...

Sounds like a boolean value to me:

if (e.getKeyCode() == KeyEvent.VK_Q) {toggle = !toggle};

then for your other key events, test, for example:

if (toggle && e.getKeyCode() == KeyEvent.VK_NUMPAD2){}

[aj_306]

yeh it does!

im new to java programming, code u help on how i should code it?

[nspils]

You responded quickly! I've been editing my reply - it has some suggested implementation in it, now ...

[aj_306]

hey man! what d i use for toggle?

a variable? like x??? :s or jus write toggle?

[nspils]

how about

boolean toggle = false;

[aj_306]

thankyou