Question

我有一个java swing GUI，其中必须执行双击和单击的特定操作。我有这个代码

 if (e.getClickCount() == 1)
    {
    // do something on single click
    }
    if (e.getClickCount() == 2)
    {
    // do something on double click
    }

工作正常。问题是此代码对于鼠标右键和左键单击的行为相同。我不想对双击右键执行任何操作。只想在单击右键时显示弹出菜单。

任何身体都请指导我。感谢

Answer 1

你必须在你的MouseEvent对象（变量“e”）中检查导致事件的按钮：

if(e.getClickCount() == 2){ // two clicks, ok
    if((e.getModifiers() & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK){
    // clicks are from BUTTON1, aka left click
    // double left click, insert code here      
    }
}

Answer 2

您可以使用此代码，Double_Click中选中Swing Timer，其他选项使用Toolkit（从未使用过），也许more info here

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ClickListener extends MouseAdapter implements ActionListener {

    private final static int clickInterval = (Integer) Toolkit.getDefaultToolkit().getDesktopProperty("awt.multiClickInterval");
    private MouseEvent lastEvent;
    private Timer timer;

    public ClickListener() {
        this(clickInterval);
    }

    public ClickListener(int delay) {
        timer = new Timer(delay, this);
    }

    @Override
    public void mouseClicked(MouseEvent e) {
        /*if (e.getClickCount() > 2) {
            return;
        }
        lastEvent = e;
        if (timer.isRunning()) {
            timer.stop();
            doubleClick(lastEvent);
        } else {
            timer.restart();
        }*/

        if (timer.isRunning() && !e.isConsumed() && e.getClickCount() > 1) {
            System.out.println("double");
            timer.stop();
        } else {
            timer.restart();
        }
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        timer.stop();
        singleClick(lastEvent);
    }

    public void singleClick(MouseEvent e) {
    }

    public void doubleClick(MouseEvent e) {
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Double Click Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.addMouseListener(new ClickListener() {

            @Override
            public void singleClick(MouseEvent e) {
                System.out.println("single");
            }

            @Override
            public void doubleClick(MouseEvent e) {
                System.out.println("double");
            }
        });
        frame.setPreferredSize(new Dimension(200, 200));
        frame.pack();
        frame.setVisible(true);
    }
}

java右键双击鼠标事件的行为与Mac OS X上的左键双击鼠标事件相同

2 个答案: