# MIDIReceivedEventList(_:_:) Distributes incoming MIDI events from a source to its connected client input ports. ``` func MIDIReceivedEventList(_ src: MIDIEndpointRef, _ evtlist: UnsafePointer) -> OSStatus ``` ## Parameters `src` The source that’s transmitting MIDI events. `evtlist` The MIDI events to transmit. ## Return Value An `OSStatus` result code. ## Discussion Drivers can call this function when receiving MIDI events from a source. Clients that create virtual sources, using [`MIDISourceCreateWithProtocol(_:_:_:_:)`](/documentation/CoreMIDI/MIDISourceCreateWithProtocol(_:_:_:_:)), can call this function when the source is generating MIDI events. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)