# MIDIInputPortCreate(_:_:_:_:_:) Creates an input port through which the client may receive incoming MIDI messages from any MIDI source. ``` func MIDIInputPortCreate(_ client: MIDIClientRef, _ portName: CFString, _ readProc: MIDIReadProc, _ refCon: UnsafeMutableRawPointer?, _ outPort: UnsafeMutablePointer) -> OSStatus ``` ## Parameters `client` The client to own the newly-created port. `portName` The name of the port. `readProc` The MIDIReadProc which will be called with incoming MIDI, from sources connected to this port. `refCon` The refCon passed to readHook. `outPort` On successful return, points to the newly-created MIDIPort. ## Return Value An OSStatus result code. ## Discussion After creating a port, use MIDIPortConnectSource to establish an input connection from any number of sources to your port. readProc will be called on a separate high-priority thread owned by CoreMIDI. --- 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)