我想在矩形外侧单击鼠标时更改背景颜色。我只是不知道如何使用MouseEvent。更改鼠标事件的背景颜色
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class AnAppletWithMouseEvents extends Applet implements MouseListener {
public void init()
{
addMouseListener(this);
}
public void paint(Graphics g)
{
g.setColor(Color.green);
g.drawRect(10, 30, 150, 150);
}
public void mouseClicked(MouseEvent e)
{
String clickDesc;
if (e.getClickCount() == 2)
clickDesc = "double";
else
clickDesc = "single";
System.out.println("Mouse was " + clickDesc + "-clicked at location (" +
e.getX() + ", " + e.getY() + ")");
}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mousePressed(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
}
那么你的问题是什么?当你点击任何地方时,输出是什么? – Sibbo
究竟是什么部分你有麻烦?你的'mouseClicked'方法工作吗?如果是这样,你有点鼠标点和矩形的边界,你还需要什么? – Kevin