在Java中使用带有JSpinner的鼠标滚轮的用户界面

Question

我想用我的鼠标滚轮来增减JSpinner。这可能吗

Answer 1

import javax.swing.*;
import java.awt.event.*;
public class TestSpinner extends JFrame implements
MouseWheelListener
{
  public TestSpinner()
  {
    setSize( 100, 50 );
    spinner = new JSpinner();
    spinner.addMouseWheelListener( this );
    getContentPane().add( spinner, "Center" );
  }
  public void mouseWheelMoved( MouseWheelEvent e )
  {
    spinner.setValue( new Integer(
((Integer)spinner.getValue()).intValue() -
e.getWheelRotation() ) );
  }
  public static void main( String [] args )
  {
    TestSpinner t = new TestSpinner();
    t.setVisible( true );
  }
  private JSpinner spinner;
}  

资料来源：http://www.devx.com/tips/Tip/14880

Answer 2

spinner.addMouseWheelListener(new MouseWheelListener() {
    public void mouseWheelMoved(MouseWheelEvent mwe) {
        if (mwe.getScrollType() != MouseWheelEvent.WHEEL_UNIT_SCROLL) {
            return;
        }
        double value = (Double)spinner.getValue();
        value -= mwe.getUnitsToScroll();
        spinner.setValue(value);
    }
});

这起黑客对我有用