通常串口的开发是基于VC的，这个为以VB开发工具的来说，希望能有所借鉴。用activeX控件 mscomm32.ocx写的一个串口调试工具.-usually is based on the development of the VC, VB to the development of tools, hopes to have a reference. Use activeX control mscomm32.ocx write a serial debugging tools.