Hook里的SetWindowsHookEx在64位系统中有什么不一样吗？

Question

最近突然对Hook很感兴趣，就写了个屏幕挂机的小程序来做实验，结果发现问题来了，那个SetWindowsHookEx在32位系统中能成功，但是在64位系统中就失败了。

部分代码如下：

    private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
    {
      KeyMSG m = (KeyMSG)Marshal.PtrToStructure(lParam, typeof(KeyMSG));
      switch ((Keys)m.vkCode)
      {
        case Keys.LWin:
        case Keys.RWin:
        case Keys.Delete:
        case Keys.Alt:
        case Keys.Escape:
        case Keys.F4:
        case Keys.Control:
        case Keys.Tab:
          return 1;
      }
      return 0;
    }

    /// <summary>
    /// 安装Hook
    /// </summary>
    private void InstallHook()
    {
      if (hKeyboardHook == 0)
      {
        KeyboardHookProcedure = new HookProc(KeyboardHookProc);
        hKeyboardHook = SetWindowsHookEx(13, KeyboardHookProcedure, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]), 0);
        if (hKeyboardHook == 0)
        {
          Console.WriteLine("Hook Install failed!");
        }
        else
          Console.WriteLine("Hook Install succeeded!");
      }
    }

在我64位系统里，Console总是显示失败！

求大虾解答！

Answer 1

SetWindowsHookEx can be used to inject a DLL into another process. A 32-bit DLL cannot be injected into a 64-bit process, and a 64-bit DLL cannot be injected into a 32-bit process. If an application requires the use of hooks in other processes, it is required that a 32-bit application call SetWindowsHookEx to inject a 32-bit DLL into 32-bit processes, and a 64-bit application call SetWindowsHookEx to inject a 64-bit DLL into 64-bit processes. The 32-bit and 64-bit DLLs must have different names.

Answer 2

How to set the SetWindowsHookEx?

Answer 3

怎么写那个Hook呢？求解？

Answer 4

Hi Qiaoqiao,

因为你Hook的进程如果是64位的，所以它调用的Dll也应该是64位的。你需要生成你的程序为X64或者是AnyCPU。（右键单击项目名称à“属性”à“生成”à在平台中选择X64\AnyCPU)。

Answer 5

谢谢你的回答！但是我属性——生成——目标平台里设置了AnyCPU或者X64好像还是失败，那个配置里是活动（Debug），旁边的平台：活动（X86），那个活动（X86）没有其他选项

Answer 6

谢谢你的回答！但是我属性——生成——目标平台里设置了AnyCPU或者X64好像还是失败，那个配置里是活动（Debug），旁边的平台：活动（X86），那个活动（X86）没有其他选项

建个新项目看看，应该有X64选项

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http://feiyun0112.cnblogs.com/

Answer 7

我已经搞定了，在SetWindowsHookEx的第三个参数写成（IntPtr）0就可以了

谢谢大家的帮忙

Answer 8

相比32位只做了这么一个更改是吗？还是结合着属性里的更改？