这段代码时我在腾讯云跟着跟着一位老师写的 但是我的在运行时 钩子设置失败 返回的是NULL，求教各位 ！！！！！！！

----------------------------------------------------------------------------------------------------------------------------------

这个是main函数

HMODULE hmod = LoadLibrary(L"D:/程序/dll1/release/sssssssssssss.dll");

if (hmod == NULL)

{

std::cout << "dll加载失败" << std::endl;

return 0;

}

typedef void(*set_hook)(void);

set_hook sethook = (set_hook)GetProcAddress(hmod,"SetHook");

sethook();

while (1)

{

Sleep(1000);

}

typedef bool(*un_sethook)(void);

un_sethook unhook = (un_sethook)GetProcAddress(hmod,"UnHook");

unhook();

FreeLibrary(hmod);

return 0;

----------------------------------------------------------------------------------------------------------------------------------

这是dll

#include "pch.h"

HHOOK global_Hook;

BOOL GetPrentProcess(DWORD pid,LPCTSTR name)// 判断是否是需要注入的进程

{

MODULEENTRY32 me{};

HANDLE hmldulesnap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,pid);

if (hmldulesnap != INVALID_HANDLE_VALUE)

{

BOOL bret = Module32First(hmldulesnap,&me);

if (!wcscmp(name, me.szModule))

{

CloseHandle(hmldulesnap);

return true;

}

CloseHandle(hmldulesnap);

return FALSE;

}

CloseHandle(hmldulesnap);

return FALSE;

}

wchar_t* GetMyDllName()

{

wchar_t path[256]{}, dllname[256]{};

GetModuleFileName(NULL,path,256);

int len = wcslen(path);

wchar_t singleChar = L'\\';

for (int i = len; i >= 0; i--)

{

if (path[i] == singleChar)

{

i++;

for (int j = 0;i <= len; j++)

{

dllname[j] =path[i++];

}

break;

}

}

return dllname;

}

LRESULT CALLBACK MyProc(int code, WPARAM wParam, LPARAM lParam)

{

if (code >= 0)

{

switch (lParam)

{

case WM_KEYDOWN:

MessageBox(NULL,L"键盘按下",L"提示",NULL);

break;

}

}

return CallNextHookEx(global_Hook,code,wParam,lParam);

}

extern"C" _declspec(dllexport) void SetHook()

{

global_Hook = SetWindowsHookEx(WH_MSGFILTER,MyProc,GetModuleHandle(GetMyDllName()),0);

}

extern"C" _declspec(dllexport) void UnHook()

{

if (global_Hook != NULL)

{

UnhookWindowsHookEx(global_Hook);

}

}

BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)

{

switch (ul_reason_for_call)

{

case DLL_PROCESS_ATTACH:

{

// 当DLL被加载时触发,判断当前自身父进程是否为 lyshark.exe

BOOL flag = GetPrentProcess(GetCurrentProcessId(),L"被注入的程序.exe");

if (flag == TRUE)

{

MessageBox(0, L"hello lyshark", 0, 0);

}

break;

}

case DLL_THREAD_ATTACH:

{

break;

}

case DLL_THREAD_DETACH:

{

break;

}

case DLL_PROCESS_DETACH:

{

// DLL卸载时自动清理

UnHook();

break;

}

default:

break;

}

return TRUE;

}