Question

能否用 java 扫描所有打开的窗口, 并找到指定的窗口。 Say notepad? 例如, 我想要笔记本在前面和中间打开并准备, 它打开, 当我运行我的程序时, 它会扫描所有打开的窗口, 并将笔记本往前移动。

Answer 1

I have extensive experience on Windows system. And I know that Windows system specific requirements are properly met in Windows Management Instrumentation (WMI). I have used WMI successfully like what you’re doing but I never did it with Java. Here’s a link at WMI explanations. Please tell me which ones you tried and state your conclusion.

相信我,一旦你知道如何用爪哇访问WMI,你几乎可以在窗口系统中做任何事情。当然,如果我承担这样的要求,我会使用C#和.NET。但爪哇是你的选择

Answer 2

JNA可以做到这一点。

import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinDef.HWND;


// https://github.com/twall/jna#readme
//    you need 2 jars : jna-3.5.1.jar and platform-3.5.1.jar

public class ActivateNotepad {

    public static void main(String[] args) {
            HWND hwnd = User32.INSTANCE.FindWindow("Notepad", null);
            if (hwnd == null) {
                System.out.println("No Notepad instance detected");
            }
            else{
                System.out.println("Notepad instance found.");
                User32.INSTANCE.SetForegroundWindow(hwnd);  
            }
        }
}

友情链接