// acxelements.h

typedef enum _ACX_VOLUME_CURVE_TYPE {
  AcxVolumeCurveTypeNone,
  AcxVolumeCurveTypeFade
} ACX_VOLUME_CURVE_TYPE, *PACX_VOLUME_CURVE_TYPE;
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Windows Driver Kit DDI reference (ne-acxelements-acx_volume_curve_type)

Description

The ACX_VOLUME_CURVE_TYPE enumeration defines constants that specify a curve algorithm to be applied to set a volume level.

Constants

`AcxVolumeCurveTypeNone`

Indicates that no curve algorithm will be applied. When this curve is specified, the duration of the curve specified must be equal to 0.

`AcxVolumeCurveTypeFade`

Indicates that the algorithm that is applied to the volume setting must follow the curve shown in the diagram in AUDIO_CURVE_TYPE enumeration.

Remarks

ACX requirements

Minimum ACX version: 1.0

For more information about ACX versions, see ACX version overview.

ACX_VOLUME_CURVE_TYPE - NtDoc