问题描述

我想知道当文件操作正在进行时，是否可以像 Windows 资源管理器那样在任务栏上显示进度条?

I'd like to know if it is possible to make a progress bar displayed on the taskbar like Windows Explorer does when there's a file operation going on?

我看过很多例子，但都涉及到 C#.

I saw many examples, but they all involved C#.

SWT 不会削减它.

推荐答案

我发现Java 9中包含了这个功能.它是 AWT 的一部分，使用起来也非常简单.

I found out that this feature is included in Java 9. It is part of AWT and it is quity simple too use.

这是一个简短的例子:

import java.awt.Taskbar;
import java.awt.Taskbar.State;

import javax.swing.JFrame;
import javax.swing.WindowConstants;

/**
 * @author fxl
 */
public class TaskbarSample {

    public static void main(String[] args) {

        // JavaDoc:
        // http://www.51sjk.com/Upload/Articles/1/0/335/335943_20221103094247430.html

        // MSDNDoc:
        // http://www.51sjk.com/Upload/Articles/1/0/335/335943_20221103094248391.aspx
        if (Taskbar.isTaskbarSupported() == false) {
            return;
        }

        JFrame dialog = new JFrame("Test - 50%");
        dialog.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        dialog.setVisible(true);    


        Taskbar taskbar = Taskbar.getTaskbar();
        taskbar.setWindowProgressState(dialog, State.ERROR);
        taskbar.setWindowProgressValue(dialog, 50);     
    }

}