Hook编程2:全局钩子

// The following ifdef block is the standard way of creating macros which make exporting 

// from a DLL simpler. All files within this DLL are compiled with the HOOK_EXPORTS

// symbol defined on the command line. this symbol should not be defined on any project

// that uses this DLL. This way any other project whose source files include this file see 

// HOOK_API functions as being imported from a DLL, wheras this DLL sees symbols

// defined with this macro as being exported.

#ifdef HOOK_EXPORTS

#define HOOK_API __declspec(dllexport)

#else

#define HOOK_API __declspec(dllimport)

#endif



extern HHOOK g_hHook;

extern HHOOK g_hHookKey;

extern HINSTANCE g_hIns;

HOOK_API void SetHook();

　　

// Hook.cpp : Defines the entry point for the DLL application.

//



#include "stdafx.h"

#include "Hook.h"



HHOOK g_hHook;

HHOOK g_hHookKey;

HINSTANCE g_hIns;



BOOL APIENTRY DllMain( HANDLE hModule, 

                       DWORD  ul_reason_for_call, 

                       LPVOID lpReserved

					 )

{

	g_hIns =(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;

}



LRESULT CALLBACK MouseProc(

						   int nCode,      // hook code

						   WPARAM wParam,  // message identifier

						   LPARAM lParam   // mouse coordinates

						   )

{

	return 1;

}





LRESULT CALLBACK KeyProc(

						   int nCode,      // hook code

						   WPARAM wParam,  // message identifier

						   LPARAM lParam   // mouse coordinates

						   )

{

	if(wParam == VK_F2){

		UnhookWindowsHookEx(g_hHook);

		UnhookWindowsHookEx(g_hHookKey);

		MessageBox(0,"去掉了Hook","提示",0);

		return 1;

	}

	else return CallNextHookEx(g_hHookKey,nCode,wParam,lParam);	

}



HOOK_API void SetHook()

{

	g_hHook = SetWindowsHookEx(WH_MOUSE,MouseProc,g_hIns,0);

	g_hHookKey = SetWindowsHookEx(WH_KEYBOARD,KeyProc,g_hIns,0);

}