用于Win CE 6.0手持机，自动检测是否存在GPRS连接，不存在则建立连接拨号上网，实时监测网络连接情况，发现网络断开则会自动连接拨号上网。-For Win CE 6.0 handheld, automatically detects whether there is a GPRS connection, there is no dial-up connection is established, real-time monitoring of network connectivity, f