使用setUndercorated = true
,如何使用退出按钮退出窗口?
public static void main(String[] args) {
JLabel label = new JLabel("My label");
label.setText("Wello!");
JFrame f = new JFrame();
f.setUndecorated(true);
f.setAlwaysOnTop(true);
f.setResizable(false);
try {
f.setContentPane(new JLabel(new ImageIcon(ImageIO.read(new File("file")))));
} catch (IOException e) {
e.printStackTrace();**strong text**
}
f.pack();
f.setVisible(true);
}
}
答案 0 :(得分:0)
您需要将自己的退出按钮添加到面板:
import javax.swing.*;
import javax.swing.border.LineBorder;
import java.awt.*;
public class Example extends JFrame {
public Example() {
setUndecorated(true);
setAlwaysOnTop(true);
setResizable(false);
setMinimumSize(new Dimension(300, 300));
setLocationRelativeTo(null);
setLayout(null);
JButton closeButton = new JButton("X");
closeButton.setFocusPainted(false);
closeButton.setBorder(new LineBorder(Color.black, 1));
closeButton.setBounds(0, 0, 30, 30);
closeButton.addActionListener(e -> dispose());
add(closeButton);
pack();
setVisible(true);
}
public static void main(String[] args) {
new Example();
}
}
这导致JFrame看起来像:
当您单击该按钮时,它会关闭JFrame。