获取Java中的非Java Windows标题 [英] Get titles of Non-Java Windows in Java

问题描述

Window.getWindows();

没有得到所有打开的窗口，只有java窗口。有没有办法让操作系统打开所有窗口。我正在创建一个java任务栏。

Doesn't get all the open windows, just the java ones. Is there a way to get all the windows the operating system has open. I'm making a java taskbar.

推荐答案

没有使用核心Java的解决方案，但问题可以使用JNI或为了更轻松的时间，JNA。正如评论中所指出的，没有任何解决方案（我知道）将与平台无关。

There is no solution using core Java, but the problem can be solved using JNI or for an easier time, JNA. As noted in the comments, no solution (that I know of) will be platform independent.

例如，此演示程序使用JNA枚举所有带有标题的Windows Windows平台，但也包括不是顶级窗口的窗口，甚至包括不可见的窗口：

For instance, this demo program uses JNA to enumerate all Windows with title in a Windows platform, but will also include windows that are not top-level windows and even windows that aren't visible:

import java.util.ArrayList;
import java.util.List;

import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.win32.StdCallLibrary;

public class EnumAllWindowNames {
   static interface User32 extends StdCallLibrary {
      User32 INSTANCE = (User32) Native.loadLibrary("user32", User32.class);

      interface WNDENUMPROC extends StdCallCallback {
         boolean callback(Pointer hWnd, Pointer arg);
      }

      boolean EnumWindows(WNDENUMPROC lpEnumFunc, Pointer userData);
      int GetWindowTextA(Pointer hWnd, byte[] lpString, int nMaxCount);
      Pointer GetWindow(Pointer hWnd, int uCmd);
   }

   public static List<String> getAllWindowNames() {
      final List<String> windowNames = new ArrayList<String>();
      final User32 user32 = User32.INSTANCE;
      user32 .EnumWindows(new User32.WNDENUMPROC() {

         @Override
         public boolean callback(Pointer hWnd, Pointer arg) {
            byte[] windowText = new byte[512];
            user32.GetWindowTextA(hWnd, windowText, 512);
            String wText = Native.toString(windowText).trim();
            if (!wText.isEmpty()) {
               windowNames.add(wText);
            }
            return true;
         }
      }, null);

      return windowNames;
   }

   public static void main(String[] args) {
      List<String> winNameList = getAllWindowNames();
      for (String winName : winNameList) {
         System.out.println(winName);
      }
   }


}

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