Virtual Serial Port ActiveX Control provides a set of events to control virtual serial port state changes:
| Event | Brief Description |
| OnBaudRate | Baud rate change was detected |
| OnDTR | DTR (data-terminal-ready) signal state changed |
| OnHandFlow | Flow control change detected |
| OnLineControl | Line control change detected |
| OnOpenClose | Port Open or Close operation detected |
| OnRxChar | A character was received and placed in the input buffer |
| OnRTS | RTS (ready-to-send) signal state changed |
| OnSpecialChars | Change of event (special) characters was detected |
| OnTimeouts | Timeouts change was detected |
| OnEvent | Triggered every time a communication event occurs |
| OnBreak | Break signal state changed |
Tip: See also: Methods overview, Properties overview