The phoneGetRing function enables an application to query the specified open phone device as to its current ring mode.
LONG phoneGetRing(
HPHONE hPhone,
LPDWORD lpdwRingMode,
LPDWORD lpdwVolume
);
Returns zero if the request succeeds or a negative error number if an error occurs. Possible return values are:
PHONEERR_INVALPHONEHANDLE, PHONEERR_NOMEM, PHONEERR_INVALPHONESTATE, PHONEERR_RESOURCEUNAVAIL, PHONEERR_INVALPOINTER, PHONEERR_OPERATIONFAILED, PHONEERR_OPERATIONUNAVAIL, PHONEERR_UNINITIALIZED.
The service provider defines the actual audible ringing patterns corresponding to each of the phone's ring modes.
Version: Use TAPI version 1.4 and later.
Header: Declared in tapi.h.
Import Library: Link with tapi32.lib.
TAPI Reference Overview, Supplementary Phone Services Functions