This function creates an instance of the specified class.
#include <mididll.h>
ULONG ulClassNumber; /* Class number. */
PMINSTANCE pminstance; /* New instance #. */
PSZ pszInstanceName; /* Instance name. */
ULONG ulFlag; /* Not used. */
ULONG rc; /* Return code. */
rc = MIDICreateInstance(ulClassNumber, pminstance,
pszInstanceName, ulFlag);