ITAutomatedPhoneControl::put_AutoVolumeControl method (tapi3if.h)
The put_AutoVolumeControl method sets the AutoVolumeControl property for this phone. When this feature is enabled, the phone's wave output volume is automatically adjusted whenever a volume button is pressed. The volume is adjusted by the amount indicated by the AutoVolumeControlStep property.
Syntax
HRESULT put_AutoVolumeControl(
[in] VARIANT_BOOL fEnabled
);
Parameters
[in] fEnabled
If VARIANT_TRUE, enables automatic volume control. If VARIANT_FALSE, disables automatic volume control. The default value is VARIANT_TRUE.
Return value
If the method succeeds, it returns S_OK. Otherwise, it returns an error value.
Remarks
The AutoVolumeControl property functions only when the value of the PhoneHandlingEnabled property is VARIANT_TRUE. You can set the AutoVolumeControl property at any time. The reconfiguration takes effect the next time a volume button is pressed.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | tapi3if.h (include Tapi3.h) |
| Library | Uuid.lib |
| DLL | Tapi3.dll |