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;
:1
和:8
是什么意思?