判断是否插入存储器，使用sysinfo控件，这是个ActiveX控件，需要手动添加。使用sysinfo控件的DeviceArrival函数判断是否有存储器插入-Determine whether the inserted memory, use the sysinfo control, this is a ActiveX control, you need to be added manually. Sysinfo control DeviceArrival used to determine