VC++钩子DLL框架代码(MFC Extension DLL using shared MFC DLL)

// HookDllDemo.cpp : Defines the initialization routines for the DLL.
//

#include "stdafx.h"
#include <afxdllx.h>

#include <windows.h> //引入windows头文件

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

// 建立数据段
#pragma data_seg("HookData")
HHOOK g_hHook = NULL; // 钩子句柄
HINSTANCE g_hInstDLL = NULL; // 模块句柄
#pragma data_seg()
//设置数据段为可读可写可共享
#pragma comment(linker,"/SECTION:HookData,RWS")

static AFX_EXTENSION_MODULE HookDllDemoDLL = { NULL, NULL };

extern "C" int APIENTRY
DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)//入口函数
{
// Remove this if you use lpReserved
UNREFERENCED_PARAMETER(lpReserved);

if (dwReason == DLL_PROCESS_ATTACH)
{
  TRACE0("HOOKDLLDEMO.DLL Initializing!/n");

  // Extension DLL one-time initialization
  if (!AfxInitExtensionModule(HookDllDemoDLL, hInstance))
   return 0;

// Insert this DLL into the resource chain
  // NOTE: If this Extension DLL is being implicitly linked to by
  // an MFC Regular DLL (such as an ActiveX Control)
  // instead of an MFC application, then you will want to
  // remove this line from DllMain and put it in a separate
  // function exported from this Extension DLL. The Regular DLL
  // that uses this Extension DLL should then explicitly call that
  // function to initialize this Extension DLL. Otherwise,
  // the CDynLinkLibrary object will not be attached to the
  // Regular DLL's resource chain, and serious problems will
  // result.

new CDynLinkLibrary(HookDllDemoDLL);

g_hInstDLL = hInstDLL; // 初始化模块句柄

}
else if (dwReason == DLL_PROCESS_DETACH)
{
  TRACE0("HOOKDLLDEMO.DLL Terminating!/n");
  // Terminate the library before destructors are called
  AfxTermExtensionModule(HookDllDemoDLL);
}
return 1;   // ok
}

// 钩子回调函数
LRESULT WINAPI HookProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// TODO: 在这里添加响应动作

// 将事件传递到下一个钩子
return CallNextHookEx(g_hHook, nCode, wParam, lParam);
}

// 安装钩子
extern "C" __declspec(dllexport) DWORD InstallHook(void)
{
DWORD dwRet = 0;
/*加载钩子类别*/
g_hHook = SetWindowsHookEx(WH_MOUSE/*WH_SHELL*/, HookProc, g_hInstDLL, 0);
if(g_hHook == NULL)
dwRet = GetLastError();
return dwRet;
}

// 卸载钩子
extern "C" __declspec(dllexport) DWORD KillHook(void)
{
if(UnhookWindowsHookEx(g_hHook))
return 0;
else
return GetLastError();
}

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VC++钩子DLL框架代码(MFC Extension DLL using shared MFC DLL)

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