phoneGetStatus function (tapi.h)
The phoneGetStatus function enables an application to query the specified open phone device for its overall status.
LONG phoneGetStatus(
HPHONE hPhone,
LPPHONESTATUS lpPhoneStatus
);
hPhone
Handle to the open phone device to be queried.
lpPhoneStatus
Pointer to a variably sized data structure of type PHONESTATUS, which is loaded with the returned information about the phone's status.
Returns zero if the request succeeds or a negative error number if an error occurs. Possible return values are:
PHONEERR_INVALPHONEHANDLE, PHONEERR_NOMEM, PHONEERR_INVALPOINTER, PHONEERR_RESOURCEUNAVAIL, PHONEERR_OPERATIONFAILED, PHONEERR_STRUCTURETOOSMALL, PHONEERR_OPERATIONUNAVAIL, PHONEERR_UNINITIALIZED.
An application can use this function to determine the current state of an open phone device. The status information describes information about the phone device's hookswitch devices, ringer, volume, display, and lamps.
Requirement | Value |
---|---|
Target Platform | Windows |
Header | tapi.h |
Library | Tapi32.lib |
DLL | Tapi32.dll |