LAPRdCancel
ATLAPRecHandle abRecord; handle to an ATLAPRec information on the correct method for reading ALAP frames using the
preferred interface.
abRecord is a handle to an ATLAPRec structure noErr (0) No error
recNotFndErr (-3108) ABRecord not found in queue
readQErr (-3105) Invalid protocol type or protocol type not found in
table.
noErr if the the LAPRead call is successfully removed from the queue. If LAPRdCancel returns recNotFnd, check the abResult field to verify that the LAPRead has been completed and determine its outcome.