Function AUGraphIsOpen 

pub unsafe extern "C-unwind" fn AUGraphIsOpen(
    in_graph: AUGraph,
    out_is_open: NonNull<u8>,
) -> i32

👎Deprecated: AUGraph is deprecated in favor of AVAudioEngine

Available on crate feature AUGraph only.

Is the graph open

Safety

• in_graph must be a valid pointer.
• out_is_open must be a valid pointer.