| CreatePort | The CreatePort method creates new virtual serial port. |
| CreatePortOverlapped | The CreatePortOverlapped method creates new virtual serial port which can have the same name as existing physical port (e.g. COM1). |
| RemovePort | The RemovePort method removes previously created virtual serial port. |
| Read | The Read method reads buffered data from a virtual port. |
| ReadArray | The ReadArray method reads buffered data from a virtual port. This method is Visual Basic specific. |
| Write | The Write method writes data to virtual serial port. |
| WriteArray | The WriteArray method writes data to virtual serial port. This method is Visual Basic specific. |
| GetLastError | Retrieves last error code. |
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