The following structures are used with communications resources:
| Description | Structure |
|---|---|
| Contains information about the configuration state of a communications device. | COMMCONFIG |
| Used in SetCommTimeouts and GetCommTimeouts to set and query the time-out parameters for a communications device. The parameters determine the behavior of ReadComm and WriteComm operations on the device. | COMMTIMEOUTS |
| Used by GetCommProperties to return information about a given communications driver. | COMMPROP |
| Contains information about a communications device. This structure is filled by ClearCommError function. | COMSTAT |
| Defines the control setting for a serial communications device. | DCB |