问题
I was wondering if I could hide the title bar in Java Swing, but keep the maximize, minimize, and close buttons.
I've tried adding frame.setUndecorated(true);
but it removes the maximize, minimize, and close buttons completely.
Here is my code:
public Display(String title, int width, int height) {
Display.width = width;
Display.height = height;
Display.absWidth = width;
Display.absHeight = height;
Display.d = new Dimension(width, height);
setProperties();
image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
canvas = new Canvas();
canvas.setPreferredSize(new Dimension(width, height));
frame = new JFrame(title);
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(canvas, BorderLayout.CENTER);
frame.setIgnoreRepaint(true);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setResizable(true);
canvas.createBufferStrategy(2);
bs = canvas.getBufferStrategy();
g = bs.getDrawGraphics();
frame.getRootPane().putClientProperty("apple.awt.fullWindowContent", true);
frame.getRootPane().putClientProperty("apple.awt.transparentTitleBar", true);
frame.setVisible(true);
handleResize();
handleQuit();
//showSplashScreen();
}
回答1:
If you want to keep the native buttons then it depends on the operating system.
- Windows: No, you will have to use
frame.setUndecorated(true);
and replicate the buttons yourself. This would then work on all platforms, but to achieve a native look you’d have to implement it for each individually. - macOS: If you use jdk 12 or newer you can achieve it using:
rootPane.putClientProperty(“apple.awt.fullWindowContent“, true);
rootPane.putClientProperty(“apple.awt.transparentTitleBar“, true);
This is taken from the jdk test cases:
SwingUtilities.invokeLater(() -> {
frame = new JFrame("Test");
frame.setBounds(200, 200, 300, 100);
rootPane = frame.getRootPane();
JComponent contentPane = (JComponent) frame.getContentPane();
contentPane.setBackground(Color.RED);
rootPane.putClientProperty("apple.awt.fullWindowContent", true);
rootPane.putClientProperty("apple.awt.transparentTitleBar", true);
frame.setVisible(true);
});
Note that all creation and modification of the ui should happen on the Swing main thread using SwingUtilities#invokeLater
or SwingUtilities#invokeAndWait
.
What exactly is your goal in removing the title bar but keeping the buttons?
来源:https://stackoverflow.com/questions/61373284/is-there-a-way-to-hide-the-title-bar-but-keep-the-buttons-in-jframe