在 ParameterWebBrowser.cpp 中实现

Get use system file

! * \brief Restore password * \details * if the encryption key is incorrect, Password is set to empty. * it proceeds to the normal password entry

! * \~chinese 插件连接的具体操作处理。因为此插件是非Qt事件，所以在此函数中等待。 * * \~english Specific operation processing of plug-in connection. * Because of it is a

! * \return * \li >= 0: continue, Interval call time (msec) * \li = -1: stop * \li < -1: error */