java 鼠标监听

2013-07-05 10:15:20 109 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

java实现鼠标拖拽动作监听源代码 import java.awt.event.ActionEvent ; import java.awt.event.ActionListener ; import java.awt.event.WindowListener ; import java.awt.event.MouseMotionAdapter ; import java.awt.event.MouseMotionListe 阅读详情

JFrame有一个JScrollPane，JScrollPane中有一张图片，我现在分别对JScrollPane和image监听
scroll.addMouseListener(new MouseAdapter(){
public void mousePressed(MouseEvent e){
beginx=e.getX();
beginy=e.getY();
}
});
scroll.addMouseMotionListener(new MouseAdapter(){
public void mouseDragged(MouseEvent e){
int x1=e.getX();
int y1=e.getY();
System.out.println("mousedragged--->"+(x1-beginx)+" "+(y1-beginy));
}
});
image.addMouseListener(new MouseAdapter(){
public void mousePressed(MouseEvent e){
start_X=e.getX();
start_Y=e.getY(); setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));

}
});
image.addMouseMotionListener(new MouseAdapter(){
public void mouseDragged(MouseEvent e){
end_X=image.getX()+e.getX()-start_X;
end_Y=image.getY()+e.getY()-start_Y;
image.setLocation(end_X,end_Y);

}
});
现在就是image事件的监听起作用，scroll不起作用，也就是不输出。

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