一个简单的系统管理软件，类似美屏等网管软件，只不过这是单机的一个模型，带ado连接数据库，屏蔽热键，限制鼠标等功能-a simple system management software, similar to the US-screen network management software, but this is a stand-alone model with ado connect to the database, shielding hotkey, mouse functions r