SetScalarValue
Sets the scalar value of the level control.
Declaration
kern_return_t SetScalarValue(float in_scalar);Parameters
- in_scalar:
The scalar value to set.
Return Value
kIOReturnSuccess on success, or another value if an error occurs. For a list of error codes, see Error Codes.
Discussion
If successful, changing the scalar value sends a notification to the host to update the object state.
This method synchronizes by using the work queue created by the object.