IOCTL_AG_GET_MIC_VOL (Windows CE 5.0)

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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_MIC_VOL.
• cInBuffer
  Not used.
• pInBuffer
  Not used.
• cOutBuffer
  Equals the size of USHORT.
• pOutBuffer
  [out] Pointer to a USHORT that stores the microphone 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 microphone volume, use the IOCTL_AG_SET_MIC_VOL IOCTL.

Requirements

OS Versions: Windows CE 5.0 and later.
Header: Btagpub.h.

See Also

Audio Gateway Core Component

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