This event fires when the Headset's microphone gain has changed. The new value is stored in the ThbTapiPhone.Headset.Gain property. This event will fire only if the property values ThbTapiPhone.Headset.Available and Headset.GainAvailable are True.

Availability

Design-Time: Read, Write / Run-Time: Read, Write

Declaration

procedure OnHeadsetGain(Sender: TObject);
property OnHeadsetGain : TNotifyEvent;

Description

ThbTapiPhone.Headset