public static extern uint midiInAddBuffer(HMIDIIN hmi, [NativeTypeName("LPMIDIHDR")] MIDIHDR *pmh, uint cbmh);
public static extern uint midiInUnprepareHeader(HMIDIIN hmi, [NativeTypeName("LPMIDIHDR")] MIDIHDR *pmh, uint cbmh);
public static extern uint midiOutUnprepareHeader(HMIDIOUT hmo, [NativeTypeName("LPMIDIHDR")] MIDIHDR *pmh, uint cbmh);
public static extern uint midiOutLongMsg(HMIDIOUT hmo, [NativeTypeName("LPMIDIHDR")] MIDIHDR *pmh, uint cbmh);
public static extern uint midiStreamOut(HMIDISTRM hms, [NativeTypeName("LPMIDIHDR")] MIDIHDR *pmh, uint cbmh);