winapi如何实现让另外的进程窗口卡住

Question

C++语言，SetWindowLong似乎只能设置本进程的吧？我想用全局钩子，里面加一个Sleep，但不确定钩子到底能捕获到什么，如果那一个进程开多线程的话，是否能把所有的线程都卡住？网上也没有相关资料介绍钩子的具体用法，全是自己摸索的

// dllmain.cpp : 定义 DLL 应用程序的入口点。
#include "pch.h"
#define DLL_API extern "C" _declspec(dllexport)
#include"111.h"
#include<string>
#include<fstream>
HMODULE hInstance;
std::wofstream outfile;
LRESULT CALLBACK func(int c, WPARAM w, LPARAM l)
{
    if (c >= 0)
    {
        PMSG msg = reinterpret_cast<PMSG>(l);
        //if (msg->message == WM_SYSCOMMAND)
        {
            TCHAR name[MAX_PATH]{};
            GetModuleFileName(NULL, name, MAX_PATH);
            std::wstring str(name);
            outfile << str << '\t' << std::hex << msg->message << std::endl;
            if (str.find(L"XXX") != str.npos)
            {
                Sleep(100000);
            }
        }
    }
    return CallNextHookEx(NULL, c, w, l);
}
HHOOK hHook;
DLL_API void StartHook()
{
    hHook = SetWindowsHookEx(WH_GETMESSAGE, func, hInstance, 0);
}
DLL_API void StopHook()
{
    if (hHook)
    {
        UnhookWindowsHookEx(hHook);
        hHook = NULL;
    }
}
BOOL APIENTRY DllMain( HMODULE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
                     )
{
    outfile.open("G:\\日志.txt");
    hInstance = hModule;
    switch (ul_reason_for_call)
    {
    case DLL_PROCESS_ATTACH:
    case DLL_THREAD_ATTACH:
    case DLL_THREAD_DETACH:
    case DLL_PROCESS_DETACH:
        break;
    }
    return TRUE;
}

Answer 1

使用pssuspend.exe