public void HookStart()
        {
            int wordCalcID = 0;
            int wordCalcProcess = 0;
            const int PROCESS_ALL_ACCESS = 0x1F0FFF;   
            const int PROCESS_VM_READ = 0x0010;   
            const int PROCESS_VM_WRITE = 0x0020;   
            if(wordWnd!= null)
            {  
                GetWindowThreadProcessId((System.IntPtr)wordWnd, out wordCalcID);
                wordCalcProcess = OpenProcess(PROCESS_ALL_ACCESS, false, wordCalcID);
            }
            else
            {
                MessageBox.Show("Not Found WordWindow");
            }
            if (hKeyboardHook == 0)
            {
                // 创建HookProc实例
                KeyboardHookProcedure = new HookProc(KeyAndMouseHookProc);
                // 设置线程钩子
                if (wordCalcProcess !=0)
                {
                    hKeyboardHook = SetWindowsHookEx(7, KeyboardHookProcedure,(System.IntPtr)wordCalcProcess,
                                            0);
                    // 如果设置钩子失败
                    if (hKeyboardHook == 0)
                    {
                        HookStop();
                        throw new Exception("SetWindowsHookEx failed.");
                    }
                }
                else if (wordCalcProcess==0)
                {
                    MessageBox.Show("ThreadId found error");
                }
              
            }
        }