小编Moh*_*ged的帖子

struct _USBCHECK_FLAGS
    {
        unsigned char   DEVICE_DEFAULT_STATE       : 1;
        unsigned char   DEVICE_ADDRESS_STATE       : 1;
        unsigned char   DEVICE_CONFIGURATION_STATE : 1;
        unsigned char   DEVICE_INTERFACE_STATE     : 1;
        unsigned char   FOUR_RESERVED_BITS         : 8;
        unsigned char   RESET_BITS                 : 8;
    } State_bits;

是什么:1和:8意味着什么？