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从按钮调用时, 鼠鼠事件等待冻结
原标题:Mouse event wait freezes when called from button

我有一个方法可以带来透明的窗口覆盖, 这样我就可以通过点击来显示屏幕区域的矩形角点 。

public Point getClickPoint(){
        JFrame frame = new JFrame("");
        MyMouseListener mouseL = new MyMouseListener();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setUndecorated(true);
        makeTranslucent(frame, Float.valueOf(0.40f));
        frame.setSize(toolkit.getScreenSize());
        frame.setVisible(true);

      frame.addMouseListener(mouseL);
        while(!mouseL.done){
            try {
                Thread.sleep(4);
                } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
 }

当我用正常的方式称呼它时,它的工作正常, 但是如果我用按键调用它, 那么它就会挂起来, 不登记点击, 并最终冻结。

 Button.addActionListener(new ActionListener() { 
        public void actionPerformed(ActionEvent actionEvent) {
        getClickPoint();
    }
}

这是否与这个最初被行动听众称为事实有关?

最佳回答

您正在屏蔽< a href=> http://docs. oracle.com/javase/tuative/ uiswing/conconconpoden/ dispatch.html', rel= “ no follow” @ em > Event Senter Tread 。 由于 actionPerformed 方法将会被 EDT调用, 您在 < code> getClickPoint 中的循环将会阻止 ETT 处理任何事件( 包括您正在等待的鼠标事件), 导致您的程序变得不响应 。

如果您需要执行昂贵的时间任务(如封锁),请查看SwingWorker 。

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