Re: javax.swing question

Thu, 22 Oct 2015 15:45:53 +0000

Try:
import javax.swing.WindowConstants
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE)

DISPOSE_ON_CLOSE is defined in WindowConstants. JFrame implements WindowConstants, but DISPOSE_ON_CLOSE is not visible via JFrame in Scala (can't remember why off the top of my head).

javax.swing question

Thu, 22 Oct 2015 13:35:31 +0000

hi
I'm goofing around using Kojo to explore different things, and wanted to explore Swing. Having a problem because Frame.DISPOSE_ON_CLOSE is claimed not to be a member of java.swing.JFrame? No problem with EXIT_ON_CLOSE but I don't want to use that, because Kojo gets killed every time I close the window.

import java.awt.Graphics import java.awt.image.BufferedImage import javax.swing.JComponent import javax.swing.JFrame val frame: JFrame = new JFrame("Fractal") frame.setSize(640,320) frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE) frame.setVisible(true)

Results in:

Error[9,39]: value DISPOSE_ON_CLOSE is not a member of object javax.swing.JFrame

I realise Kojo isn't necessarily meant to be used in this way, but for my better understanding, I am curious why DISPOSE_ON_CLOSE doesn't show up!