How to get value from protected class

Projects General Guidance
3

Do X and Y even exist?

struct MOUSEINFO {

        struct {
                uint8_t bmLeftButton : 1;
                uint8_t bmRightButton : 1;
                uint8_t bmMiddleButton : 1;
                uint8_t bmDummy : 5;
        };
        int8_t dX;
        int8_t dY;
};