MFC学习 消息钩子使用

HANDLE h_KeyBoard;

//当前进程的钩子, 另外WH_KEYBOARD_LL, 与WH_MOUSE_LL参数时, 是获取的底层的消息, 相当于获取的全局的
g_hKeyBoard = SetWindowsHookEx(WH_KEYBOARD, KeyboardProc, NULL, GetCurrentThreadId()); 

//全局钩子, 全局钩子要填写dll的句柄, 如用WH_GETMESSAGE可以获取其它进程的消息.

h_KeyBoard =SetWindowsHookEx(WH_MOUSE, MouseProc, GetModuleHandle("HookGlobal"), NULL); //这儿是dll的名字, 全局钩子要dll名字, 其实GetMoudleHandle里面可以填写NULL

UnhookWindowsHookEx(g_hKeyBoard);

 

LRESULT CALLBACK KeyboardProc(  int code,       // hook code
                              WPARAM wParam,  // virtual-key code
                              LPARAM lParam   // keystroke-message information
                              )
{
    /*
    if(VK_SPACE == wParam || ((lParam >> 29 & 1) && VK_F4 == wParam))
        return 1;
    else
        return CallNextHookEx(g_hKeyBoard, code, wParam, lParam);
    */
    if(VK_F2 == wParam)
    {
        ::SendMessage((HWND)g_hWnd, WM_CLOSE, 0, 0);
        UnhookWindowsHookEx(g_hKeyBoard);
        UnhookWindowsHookEx(g_hMouse);
    }
    return 1;
}

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