程序代码：

        /// <summary> 
        /// 改键方法 
        /// </summary> 
        /// <param name="Vk_num"></param> 
        /// <returns></returns> 
        private int ChangeKey(byte Vk_num) 
        { 
            //获得魔兽程序的句柄 
            IntPtr wcHandle = Win32API.FindWindow(null, "Warcraft III"); 
            //获取魔兽进程的ID 
            IntPtr threadid = Win32API.GetWindowThreadProcessId(wcHandle, IntPtr.Zero); 
            //取得一个句柄，描述指定应用程序的键盘布局，  经比较中文输入法都小于0 
            int num = Win32API.GetKeyboardLayout(threadid); 
            //如果钩子有效并且不是中文输入法 
            if (wcHandle != IntPtr.Zero && num > 0) 
            { 
                //设置游戏窗口到最前 
                Win32API.SetForegroundWindow(wcHandle); 
                if (!KeyBoard_Press) 
                { 
                    Win32API.keybd_event(Vk_num, 0, 0, 0);//按下小键盘 
                    KeyBoard_Press = true; 
                } 
                else 
                { 
                    Win32API.keybd_event(Vk_num, 0, KEYEVENTF_KEYUP, 0);　//松开小键盘 
                    KeyBoard_Press = false; 
                } 
                return 1; 
            } 
            return 0; 
        }