typeKeySign (code 147)

A Key Signature event (form the Midi File 1.0 specification). This event cannot be sent to external Midi devices.

typeKeySign events have 2 fields :

0

from -7 (7 flats) to 7 (7 sharps), (8-bits field)

1

form 0 (major key) to 1 (minor key), (8-bits field)

Creates a Key Signature event and returns a pointer to the event or NIL if there is no more memory space.

MidiEvPtr KeySign (long date, long sharpflats, long minor)
{
    MidiEvPtr e;

    if ( e = MidiNewEv(typeKeySign))    /* Allocate a new event. Check not NIL */ 
    {
        Date(e) = date;                    
        MidiSetField(e, 0, sharpflats);
        MidiSetField(e, 1, minor);
    }
    return e;
}