IOCTL_AG_GET_SPEAKER_VOL
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8/28/2008
This IOCTL retrieves the speaker volume of the headset or the hands-free device.
Parameters
- hDeviceContext
[in] Device context handle.
- fSelector
[in] Equals IOCTL_AG_GET_SPEAKER_VOL.
- cInBuffer
Not used.
- pInBuffer
Not used.
- cOutBuffer
Equals the size of USHORT.
- pOutBuffer
[out] Pointer to a USHORT that stores the speaker volume.
- pcDataReturned
Equals cOutBuffer.
Return Values
Returns TRUE if successful, FALSE otherwise. To obtain extended error information, call the GetLastError function.
Remarks
To set the speaker volume, use the IOCTL_AG_SET_SPEAKER_VOL IOCTL.
Requirements
| Header | btagpub.h |
| Windows Embedded CE | Windows CE 5.0 and later |