This structure contains fields for the MCI_SYSINFO message for setting and querying a default associated with a particular device type.
typedef struct _MCI_SYSINFO_DEFAULTDEVICE { CHAR szInstallName[MAX_DEVICE_NAME]; /* Install name. */ USHORT usDeviceType; /* Device type number. */ } MCI_SYSINFO_DEFAULTDEVICE; typedef MCI _ SYSINFO _ DEFAULTDEVICE * PMCI _ SYSINFO _ DEFAULTDEVICE ;