The phoneShutdown function shuts down the application's usage of TAPI's phone abstraction.
LONG phoneShutdown(
HPHONEAPP hPhoneApp
);
Returns zero if the request succeeds or a negative error number if an error occurs. Possible return values are:
PHONEERR_INVALAPPHANDLE, PHONEERR_NOMEM, PHONEERR_UNINITIALIZED, PHONEERR_RESOURCEUNAVAIL.
If this function is called when the application has open phone devices, these devices are closed.
Version: Use TAPI version 1.4 and later.
Header: Declared in tapi.h.
Import Library: Link with tapi32.lib.