Need to hook WoW exit/quit

[alex_v]

Wow.exe was started, dll is injected and there is a thread running("in dll"). If I quit wow(press quit, exit or X), there is "Unknow exception" popup. If I stop my thread before quitting wow client, there is no error popups. I think I need to hook wow quit to stop my thread and exit without errors. I have tried to hook _atexit, but WoW calls this function many times, not only on quit.
So, question is: how do I hook player closing wow client?

[tobmaps]

So, question is: how do I hook player closing wow client?

If your way is "debug" then you can simple

        void EnterDebugLoop()
        {
            if (DebugActiveProcess(dwProcessId))
            {
                DebugSetProcessKillOnExit(0);
                while (true)
                {
                    if (!WaitForDebugEvent(&DebugEvent, 500))
                            continue;
                    dwContinueStatus = DBG_CONTINUE;
                    if (DebugEvent.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT || DebugEvent.dwDebugEventCode == RIP_EVENT)
                    {
                        GameExit = true;
                        RemoveDebug();
                    }
                    ContinueDebugEvent(DebugEvent.dwProcessId, DebugEvent.dwThreadId, dwContinueStatus);
                }
            }
            else
                PrintError("Already attached");
        }

[Jadd]

If your way is "debug" then you can simple
<snip>

Sorry, this is really ugly. Just hook WndProc and process the WM_CLOSE event. You can remove your hooks and whatever else there.

[alex_v]

If your way is "debug"

CreateRemoteThread, LoadLibrary, need to kill my threads before game exit. One of exceptions was "your thread is running, but DLL is unloaded".

WndProc

I will try to hook WM_CLOSE later, thanks

I ll share my findings: there are two Lua functions: "Quit" - Esc, Exit game (ingame) and "AccountLogin_Exit" - exit button on account login screen. Replace them and job is done(+WM_CLOSE)