c ++钩到一个不同的应用程序，如何从进程id找到线程ID？ [英] c++ hooking to a different application, how to find thread id from process id?

问题描述

我想向应用程序添加一个钩子。我使用 SetWindowsHookEx ，我可以创建一个系统范围的钩子，但我想为一个特定的应用程序创建一个钩子。我需要有目标应用程序的线程标识钩住它。我知道窗口的标题，我知道exe名称，从这些我可以得到窗口句柄和进程标识，但是如何获得线程标识？我看到一篇有关如何在 c＃，但是我没有看到如何获得c ++中的线程列表。

  HWND windowHandle = FindWindow _T（SomeOtherApp））; 
 DWORD processId = GetWindowThreadProcessId（windowHandle，NULL）; 
 DWORD threadId = ??? //我如何在这里获得线程ID？ 
 HHOOK hook = :: SetWindowsHookEx（WH_CBT，HookCBTProc，hInst，threadId）; 
 
 
 
 
 
 
 h2_lin>解决方案

GetWindowThreadProcessId（）返回线程ID。您错误地将线程标识分配给进程标识变量。改为写：

  HWND windowHandle = FindWindow（NULL，_T（SomeOtherApp））; 
 DWORD threadId = GetWindowThreadProcessId（windowHandle，NULL）; 
 HHOOK hook = :: SetWindowsHookEx（WH_CBT，HookCBTProc，hInst，threadId）; 
  




I would like to add a hook to an application. I am using SetWindowsHookEx and I can create a system wide hook, but I want to create a hook for a particular application. I need to have thread id of the target application to hook it. I know title of the window, I know exe name and from these I can get window handle and process id, but how do I get the thread id? I saw a post about how to do it in c#, but I do not see how to get a list of threads in c++.

HWND windowHandle = FindWindow(NULL, _T("SomeOtherApp"));
DWORD processId = GetWindowThreadProcessId(windowHandle, NULL);
DWORD threadId = ??? // How do I get thread id here?
HHOOK hook = ::SetWindowsHookEx( WH_CBT, HookCBTProc, hInst, threadId);

Thanks, Alexander.

解决方案

GetWindowThreadProcessId() returns the thread ID. You are erroneously assigning the thread ID to the process ID variable. Instead write:

HWND windowHandle = FindWindow(NULL, _T("SomeOtherApp"));
DWORD threadId = GetWindowThreadProcessId(windowHandle, NULL);
HHOOK hook = ::SetWindowsHookEx(WH_CBT, HookCBTProc, hInst, threadId);

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