CODEWITHSUNDEEP
javactrl
user1614833
user1614833

Reputation: 83

Detecting if a key (CTRL) is currently pressed without a KeyEvent in Java

I need to be able to see if the CTRL key is currently being pressed during the processing of a mouse event. I have tried to use the KeyListener, but trying to use the mouse event and key event together is proving to be an issue because of focus issues.

What I am essentially trying to accomplish is selecting multiple objects using the CTRL key like in Windows.

It would be much easier if, while in my mouse event, I could just check the status of the CTRL key...

Can you do that in Java?

Thanks.

Upvotes: 7

Views: 7653

Answers (2)

Kumar Vivek Mitra
Kumar Vivek Mitra

Reputation: 33544

Use getModifiers() to detect the key pressed..

eg:

if ((event.getModifiers() & ActionEvent.CTRL_MASK) ==ActionEvent.CTRL_MASK) {
System.out.println("CTRL KEY PRESSED");
}

Upvotes: 12

Hovercraft Full Of Eels
Hovercraft Full Of Eels

Reputation: 285405

MouseEvent extends from InputEvent, and I think that you can still get the modifiers from this object via getModifiers() to see if a ctrl key has been pressed. I've not tested this yet though.

Upvotes: 10

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