Legacy Document

Inside Macintosh: Networking With Open Transport / Part 2 - Open Transport Reference

Chapter 26 - Ports Reference / Functions

Getting Information About Ports /

OTGetBusTypeFromPortRef

Extracts the value of the bus type from a port reference.

C INTERFACE

UInt16 OTGetBusTypeFromPortRef(OTPortRef ref);

C++ INTERFACE

None. C++ applications use the C interface to this function.

PARAMETERS

ref

The port reference from which you wish to extract the bus type.

function result

Possible return values are listed in "The Port Reference"

DISCUSSION

The OTGetBusTypeFromPortRef function extracts the bus type value from a port reference. You can obtain such a port reference using the OTGetIndexedPort function to access the port registry.

You can use the OTGetDeviceTypeFromPortRef function and the OTGetSlotFromPortRef function to get device type and slot number information from the port reference.

SEE ALSO

The OTCreatePortRef function.

"Obtaining Port Information".