QuickTime 3 Reference
The General MIDI information structure provides information about a General MIDI instrument within an instrument component. It is defined by the GMInstrumentInfo data type.
struct GMInstrumentInfo {
long cmpInstID;
long gmInstNum;
long instMatch;
};
typedef struct GMInstrumentInfo GMInstrumentInfo;
typedef GMInstrumentInfo *GMInstrumentInfoPtr;
typedef GMInstrumentInfoPtr *GMInstrumentInfoHandle;