Querying MIDI Input Devices

Before recording MIDI audio, you should call the midiInGetDevCaps function to determine the capabilities of the MIDI input hardware present in the system. This function takes a pointer to a MIDIINCAPS structure, which it fills with information about the capabilities of a given device. This information includes the manufacturer and product IDs, a product name for the device, and the version number of the device driver. MMSYSTEM.H defines the MIDIINCAPS structure as follows:

typedef struct midiincaps_tag {
  WORD  wMid;                                        /* manufacturer ID */
  WORD  wPid;                                        /* product ID */
  VERSION vDriverVersion;                /* driver version */
  char  szPname[MAXPNAMELEN];        /* product name */
} MIDIINCAPS;