MidiInProc typedef
MidiInProc =
Void Function(HMIDIIN hMidiIn, UINT wMsg, DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
Application-defined callback function for handling incoming MIDI messages. MidiInProc is a placeholder for the application-supplied function name. The address of this function can be specified in the callback-address parameter of the midiInOpen function.
Implementation
typedef MidiInProc = Void Function(HMIDIIN hMidiIn, UINT wMsg,
DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD_PTR dwParam2);