JVCL Help:TJvSoundValue.Volume
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Specifies the volume of a device.
Pascal
propertyVolume: Byte;
Description
Use Volume to find or set the volume of a device. The value for this property must be a number from 0 (silence) to 255 (maximum volume).
Volume settings are interpreted logarithmically. This means the perceived volume increase is the same when increasing the volume level from 50 to 60 as it is from 40 to 50.
Use LastError to determine if the operation was successful.
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