Re: [Jython-users] mouse listener on JButton, onenter and onexit

[Kevin B. <kb...@ca...>]

"McDonald, Ross" wrote:
> 
> Hi list members,
> 
> please could somebody give me a pointer on how to do a mouseover and
> mouseout on a JButton,
>  in my particular case I just want to be able to display a message in a
> status bar when these events occur for a range of buttons,

You can either do it the Java way (addMouseListener on the JButton), or can use a jython shortcut syntax of passing 'mouseEntered' & 'mouseExited' as properties to the JButton constructor:

from java.awt import *
from javax.swing import *

f = JFrame( "MoveOverButton" )
cp = f.contentPane

mOff = "Move over the button"
mOn = "Mouse is over the button"
l = JLabel( mOff )
cp.add( l, BorderLayout.SOUTH )

def on( event ):
    l.setText( mOn )

def off( event ):
    l.setText( mOff )
    
b = JButton( "MoveOverMe", mouseEntered=on, mouseExited=off ) # could also addMouseListener
cp.add( b, BorderLayout.NORTH )
f.setSize( Dimension(300, 300) )

f.show()

kb