如何从任何java gui中删除窗口框 [英] How to remove window box from any java gui

问题描述

如何从任何java程序中删除窗口框。因为我想让它看起来没有边框。我知道在jre上运行的任何jar文件会自动获得这样的窗口。所以我想知道是否有解决方法。

How do i remove the window box from any java program. Because i want to make it look border-less. I know any jar files running on jre automatically gets a window like this. So i want to know if there is workaround about this.

提前致谢

这里有一张照片是什么我想做的确切

here is a photo what i want to do exactly

推荐答案

参见 框架#setUndecorated

您还可以使用默认情况下未修饰的 JWindow 。

You could also use a JWindow which is undecorated by default.

检查这个和此例如使用

已更新

如果删除边框，则负责移动和调整窗口大小...

If you remove the border, you become responsible for moving and resizing of the window...

这个基本 示例演示了如何使用鼠标移动 JWindow 。这使得窗口周围的拖动区域宽度为10像素。

This "basic" example demonstrates how to move a JWindow with the mouse. This makes a "drag zone" around window which is 10 pixels wide.

调整大小将是类似的过程，但您需要决定调整大小的方向（即它可能需要你在调整窗口大小时移动窗口;））

Resizing would be similar process, but you need to decide in which direction to resize (ie it might need you to move the window when it's resized ;))

import java.awt.Component;
import java.awt.Cursor;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JWindow;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class TestMoveWindow {

    public static void main(String[] args) {
        new TestMoveWindow();
    }

    public TestMoveWindow() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                }

                JWindow window = new JWindow();
                window.setSize(200, 200);
                window.addWindowListener(new WindowAdapter() {
                    @Override
                    public void windowClosing(WindowEvent e) {
                        System.exit(0);
                    }

                });

                MouseAdapter mouseHandler = new MouseAdapter() {

                    private Point offset;

                    protected boolean isWithinBorder(MouseEvent e) {
                        Point p = e.getPoint();
                        Component comp = e.getComponent();
                        return p.x < 10 || p.y < 10 || p.x > comp.getWidth() - 10 || p.y > comp.getHeight()  - 10;
                    }

                    @Override
                    public void mouseMoved(MouseEvent e) {
                        Component comp = e.getComponent();
                        if (isWithinBorder(e)) {
                            System.out.println("Move");
                            comp.setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
                        } else {
                            System.out.println("Default");
                            comp.setCursor(Cursor.getDefaultCursor());
                        }
                    }

                    @Override
                    public void mouseDragged(MouseEvent e) {
                        if (offset != null) {
                            Point pos = e.getLocationOnScreen();

                            int x = pos.x - offset.x;
                            int y = pos.y - offset.y;

                            System.out.println(x + "x" + y);

                            SwingUtilities.getWindowAncestor(e.getComponent()).setLocation(x, y);
                        }
                    }

                    @Override
                    public void mousePressed(MouseEvent e) {
                        if (isWithinBorder(e)) {
                            Point pos = e.getComponent().getLocationOnScreen();
                            offset = new Point(e.getLocationOnScreen());
                            offset.x -= pos.x;
                            offset.y -= pos.y;
                        }
                    }

                };

                window.getContentPane().addMouseListener(mouseHandler);
                window.getContentPane().addMouseMotionListener(mouseHandler);

                window.setLocationRelativeTo(null);
                window.setVisible(true);
            }
        });
    }
}

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