请教一个C++(windows编程) 键盘钩子的代码

chichenzhe 2013-12-29 02:08:23

我的代码是参考的这个:
http://hi.baidu.com/tigerwooz/item/13f2e8396d2d71c5392ffa89

由于本身不写C++ 所以用这个只是拿来写个玩具...其实玩具exe的逻辑也很简单. 就是在游戏里如果监听到']'的输入就开始调用VBS 进行循环输入QEQEQEQE这样的按键输入. 然后再按']' 就结束这个VBS.

但是现在碰到了问题. 就是这个WH_KEYBOARD_LL 的方式好像并不能截获所有键盘消息. 比如某些游戏内的消息他无法截获(可能这类游戏做了什么保护) 还有就是windows任务管理器里的键盘消息他也无法截获. 这是为什么呢? 我查了一下baidu, WH_KEYBOARD_LL 好像还比较底层.这么底层为什么还截获不到呢?

上面链接给的代码有点小问题.我修改后满足我需求的代码如下:
注: 因为调用的目标vbs是一个循环loop所以又查了百度.. 用了个thread..... 但是目测我这么写肯定没问题.



/*

kbhook.cpp

*/

#define _WIN32_WINNT    0400

#define STRICT

#define WIN32_LEAN_AND_MEAN

#define WH_KEYBOARD_LL 13

#include <stdio.h>

#include <stdlib.h>

#include <windows.h>

//#include <iostream.h>



DWORD   g_main_tid = 0;

HHOOK   g_kb_hook   = 0;

int		_sign = 0;

DWORD WINAPI Fun1Proc(LPVOID lpParameter);//thread data



	BOOL CALLBACK con_handler (DWORD)

	{

		PostThreadMessage (g_main_tid, WM_QUIT, 0, 0);

		return TRUE;

	};



	LRESULT CALLBACK kb_proc (int code, WPARAM w, LPARAM l)

    {

		PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT)l;

		DWORD vkCode = p->vkCode;

        //const char *info = NULL;

        if (w == WM_KEYDOWN)

		{

            printf("key down...\n");

		}

        else if (w == WM_KEYUP)

		{

			if(vkCode == 221)

			{

				printf("...key up [%d]\n", vkCode);

				if(_sign == 0)

				{

					_sign = 1;

					printf("we need open you.\n");

					HANDLE hThread1 = CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);

					CloseHandle(hThread1);

				}

				else

				{

					_sign = 0;

					printf("we need stop you.\n");

					system("taskkill /im wscript.exe /f");

				}

			}

		}



		/*

		printf ("%s - vkCode [%04x], scanCode [%04x]\n",info, p->vkCode, p->scanCode);

		*/

        // always call next hook

        return CallNextHookEx (g_kb_hook, code, w, l);

    };



	DWORD WINAPI Fun1Proc(LPVOID lpParameter)

	{

		printf("the thread is start.\n");

		system("todoscan.vbs");

		printf("the thread is end.\n");

	};

	

	int main (void)

	{

        g_main_tid = GetCurrentThreadId ();

        SetConsoleCtrlHandler (&con_handler, TRUE);

		printf ("1\n");

        g_kb_hook = SetWindowsHookEx (WH_KEYBOARD_LL, &kb_proc, GetModuleHandle(NULL),  0);//　不能为NULL，否则失败

		printf ("2\n");

        if (g_kb_hook == NULL)

        {

            fprintf (stderr, "SetWindowsHookEx failed with error %d\n", ::GetLastError ());

            return 0;

        };

		printf ("3\n");

        // 消息循环是必须的.

        MSG msg;

        while (GetMessage (&msg, NULL, 0, 0))

        {

            TranslateMessage (&msg);

            DispatchMessage (&msg);

        };

		printf ("4\n");

        UnhookWindowsHookEx (g_kb_hook);

		printf ("5\n");

        return 0;

	};