减轻您的痛苦，并使用JNA。您将需要下载
Win32 API的 jna.jar 和 jna -platform.jar
。该PInvoke的
wiki和MSDN是找到合适的系统调用是有用的。
无论如何，这是用于打印当前活动窗口的标题和过程的代码。
import static enumeration.EnumerateWindows.Kernel32.*;import static enumeration.EnumerateWindows.Psapi.*;import static enumeration.EnumerateWindows.User32DLL.*;import com.sun.jna.Native;import com.sun.jna.Pointer;import com.sun.jna.platform.win32.WinDef.HWND;import com.sun.jna.ptr.PointerByReference;public class EnumerateWindows { private static final int MAX_TITLE_LENGTH = 1024; public static void main(String[] args) throws Exception { char[] buffer = new char[MAX_TITLE_LENGTH * 2]; GetWindowTextW(GetForegroundWindow(), buffer, MAX_TITLE_LENGTH); System.out.println("Active window title: " + Native.toString(buffer)); PointerByReference pointer = new PointerByReference(); GetWindowThreadProcessId(GetForegroundWindow(), pointer); Pointer process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, false, pointer.getValue()); GetModulebaseNameW(process, null, buffer, MAX_TITLE_LENGTH); System.out.println("Active window process: " + Native.toString(buffer)); } static class Psapi { static { Native.register("psapi"); } public static native int GetModulebaseNameW(Pointer hProcess, Pointer hmodule, char[] lpbaseName, int size); } static class Kernel32 { static { Native.register("kernel32"); } public static int PROCESS_QUERY_INFORMATION = 0x0400; public static int PROCESS_VM_READ = 0x0010; public static native int GetLastError(); public static native Pointer OpenProcess(int dwDesiredAccess, boolean bInheritHandle, Pointer pointer); } static class User32DLL { static { Native.register("user32"); } public static native int GetWindowThreadProcessId(HWND hWnd, PointerByReference pref); public static native HWND GetForegroundWindow(); public static native int GetWindowTextW(HWND hWnd, char[] lpString, int nMaxCount); }}
