Question

JAVA SWING 无边框（无TITLE）窗体如何实现窗体移动

如题，当鼠标在某一区域（比如一个LABEL上）按下（一个mousedowm事件），然后拖动鼠标，能使当前窗体移动。就和鼠标在TITLE上按下并且拖动时一样的效果。

Answer 1

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;

import javax.swing.JFrame;
public class test extends JFrame{
private int xx, yy;
private boolean isDraging = false;
public test(){
setUndecorated(true); // 没有标题栏
setSize(200, 200);
setVisible(true);
this.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {

isDraging = true;

xx = e.getX();

yy = e.getY();
}

public void mouseReleased(MouseEvent e) {

isDraging = false;
}
});
this.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {

if (isDraging) {

int left = getLocation().x;

int top = getLocation().y;

setLocation(left + e.getX() - xx, top + e.getY() - yy);

}
}
});
}
public static void main(String[] args) {
test t =new test();
t.setDefaultCloseOperation(3);
}
}