This structure contains fields for the MCI_CONNECTORINFO message.
typedef struct _MCI_CONNECTORINFO_PARMS { HWND hwndCallback; /* Window handle. */ ULONG ulReturn; /* Return information. */ ULONG ulDeviceTypeID; /* Device type. */ ULONG ulConnectorType; /* Connector type. */ ULONG ulConnectorIndex; /* Connector index. */ ULONG ulToConnectorType; /* Connector type to test. */ } MCI_CONNECTORINFO_PARMS; typedef MCI _ CONNECTORINFO _ PARMS * PMCI _ CONNECTORINFO _ PARMS ;