Question

我获得x86程序的所有必需信息（在C：\ Program Files（x86）中），而不会出现以下语句的任何问题。但是对于激活窗口进程名称的x64空结果。是否可以使用jna检测x64处理器的活动窗口进程名称（.exe路径）？

Eclipse Luna for x64
Windows 8专业版x64
JRE8 x64
jna 4.1.0

import static your.pack.name.EnumerateWindows.Kernel32.OpenProcess;
import static your.pack.name.EnumerateWindows.Kernel32.PROCESS_QUERY_INFORMATION;
import static your.pack.name.EnumerateWindows.Kernel32.PROCESS_VM_READ;
import static your.pack.name.EnumerateWindows.Psapi.GetModuleBaseNameW;
import static your.pack.name.EnumerateWindows.User32DLL.GetForegroundWindow;
import static your.pack.name.EnumerateWindows.User32DLL.GetWindowTextW;
import static your.pack.name.EnumerateWindows.User32DLL.GetWindowThreadProcessId;

import java.lang.management.ManagementFactory;

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));
        System.out.println(ManagementFactory.getRuntimeMXBean().getName());

    }

    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);
    }
}

Answer 1

如果我将项目导出到runnable jar，我可以毫无问题地获取x86和x64软件的所有信息。如果我从Eclipse运行项目

，上述问题仅影响

jna x64的活动窗口进程名称

1 个答案: