如何使用java找到正在运行的应用程序处于最小化状态？

Question

如何使用java来查找Windows桌面中所有正在运行的应用程序处于最小化状态？

Answer 1

您需要先download jna.jar 和 platform.jar ，然后将它们添加到您的类路径中。您可以通过查看MSDN documentation来确定要进行的Windows系统调用。

以下是枚举所有最小化窗口的代码：

import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.WinDef.HWND;
import com.sun.jna.platform.win32.WinUser.WINDOWINFO;
import com.sun.jna.platform.win32.WinUser.WNDENUMPROC;

public class Minimized {
    private static final int MAX_TITLE_LENGTH = 1024;
    private static final int WS_ICONIC = 0x20000000;

    public static void main(String[] args) throws Exception {
        User32.EnumWindows(new WNDENUMPROC() {
            @Override
            public boolean callback(HWND arg0, Pointer arg1) {
                WINDOWINFO info = new WINDOWINFO();
                User32.GetWindowInfo(arg0, info);

                // print out the title of minimized (WS_ICONIC) windows
                if ((info.dwStyle & WS_ICONIC) == WS_ICONIC) {
                    byte[] buffer = new byte[MAX_TITLE_LENGTH];
                    User32.GetWindowTextA(arg0, buffer, buffer.length);
                    String title = Native.toString(buffer);
                    System.out.println("Minimized window = " + title);
                }
                return true;
            }
        }, 0);
    }

    static class User32 {
        static { Native.register("user32"); }
        static native boolean EnumWindows(WNDENUMPROC wndenumproc, int lParam);
        static native void GetWindowTextA(HWND hWnd, byte[] buffer, int buflen);
        static native boolean GetWindowInfo(HWND hWnd, WINDOWINFO lpwndpl);
    }
}