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Communications Functions

The following functions are used with communications resources.

FunctionDescription
BuildCommDCB Fills a specified DCB structure with values specified in a device-control string.
BuildCommDCBAndTimeouts Translates a device-definition string into appropriate device-control block codes and places them into a device control block.
ClearCommBreak Restores character transmission for a specified communications device and places the transmission line in a nonbreak state.
ClearCommError Retrieves information about a communications error and reports the current status of a communications device.
CommConfigDialog Displays a driver-supplied configuration dialog box.
EscapeCommFunction Directs a specified communications device to perform an extended function.
GetCommConfig Retrieves the current configuration of a communications device.
GetCommMask Retrieves the value of the event mask for a specified communications device.
GetCommModemStatus Retrieves modem control-register values.
GetCommProperties Retrieves information about the communications properties for a specified communications device.
GetCommState Retrieves the current control settings for a specified communications device.
GetCommTimeouts Retrieves the time-out parameters for all read and write operations on a specified communications device.
GetDefaultCommConfig Retrieves the default configuration for the specified communications device.
PurgeComm Discards all characters from the output or input buffer of a specified communications resource.
SetCommBreak Suspends character transmission for a specified communications device and places the transmission line in a break state.
SetCommConfig Sets the current configuration of a communications device.
SetCommMask Specifies a set of events to be monitored for a communications device.
SetCommState Configures a communications device according to the specifications in a device-control block.
SetCommTimeouts Sets the time-out parameters for all read and write operations on a specified communications device.
SetDefaultCommConfig Sets the default configuration for a communications device.
SetupComm Initializes the communications parameters for a specified communications device.
TransmitCommChar Transmits a specified character ahead of any pending data in the output buffer of the specified communications device.
WaitCommEvent Waits for an event to occur for a specified communications device.

 

 

 

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