|
phoneSetVolume
The phoneSetVolume sets the volume of the speaker component of the specified hookswitch device
to the specified level.
LONG phoneSetVolume(
HPHONE hPhone,
|
| DWORD dwHookSwitchDev,
|
| DWORD dwVolume
|
| );
|
|
Parameters
hPhone
A handle to the open phone device. The application must be the owner of the
phone.
dwHookSwitchDev
The hookswitch device whose speaker's volume is to be set.
PHONEHOOKSWITCHDEV_HANDSET
The phone's handset.
PHONEHOOKSWITCHDEV_SPEAKER
The phone's speakerphone or adjunct.
PHONEHOOKSWITCHDEV_HEADSET
The phone's headset.
dwVolume
The current volume setting of the device. The dwVolume parameter specifies the volume level of the hookswitch device. This is a
number in the range 0x00000000 (silence) to 0x0000FFFF (maximum volume). The actual
granularity and quantization of volume settings in this range are
service-provider specific. A value for dwVolume that is out of range is set to the nearest value in the range.
Return Values
Returns a positive request ID if the function will be completed asynchronously
or a negative error number if an error has occurred. The dwParam2 parameter of the corresponding PHONE_REPLY message is zero if the function is
successful or it is a negative error number if an error has occurred. Possible
return values are:
PHONEERR_INVALPHONEHANDLE, PHONEERR_NOMEM, PHONEERR_NOTOWNER,
PHONEERR_RESOURCEUNAVAIL, PHONEERR_INVALPHONESTATE, PHONEERR_OPERATIONFAILED,
PHONEERR_INVALHOOKSWITCHDEV, PHONEERR_UNINITIALIZED, PHONEERR_OPERATIONUNAVAIL.
See Also
PHONE_REPLY
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