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The PKEY_AudioEndpoint_Max_VolumeInDb property indicates the maximum volume in decibels for an audio endpoint device. This INF-supplied property is used by the OS volume implementation.
The vt member of the PROPVARIANT structure is set to VT_UI4.
The uintVal member of the PROPVARIANT structure contains a float value expressed in fixed point 16.16 format.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Build 26100 |
| Minimum supported server |
Windows Server 2025 |
| Header |
|