BASS_WASAPI_SetVolume

Sets the device volume.

BOOL BASS_WASAPI_SetVolume(
BOOL linear,
float volume
);

Parameters

linear Use a linear curve? Otherwise logarithmic.

volume The volume level... 0 (silent) to 1 (max) if linear, or else a dB level.

Return value
If successful, then TRUE is returned, else FALSE is returned. Use BASS_ErrorGetCode to get the error code.

Error codes

BASS_ERROR_INIT BASS_WASAPI_Init has not been successfully called.

BASS_ERROR_NOTAVAIL There is no volume control available.

BASS_ERROR_ILLPARAM volume is invalid.

BASS_ERROR_UNKNOWN Some other mystery problem!

Remarks
When setting the volume in dB (linear = FALSE), the valid range can be obtained from BASS_WASAPI_GetInfo.

When using multiple devices, the current thread's device setting (as set with BASS_WASAPI_SetDevice) determines which device this function call applies to.

linear	Use a linear curve? Otherwise logarithmic.
volume	The volume level... 0 (silent) to 1 (max) if linear, or else a dB level.

BASS_ERROR_INIT	BASS_WASAPI_Init has not been successfully called.
BASS_ERROR_NOTAVAIL	There is no volume control available.
BASS_ERROR_ILLPARAM	volume is invalid.
BASS_ERROR_UNKNOWN	Some other mystery problem!