typedef
  struct {
    int date;
    int time;
    }
  GB_DATE_VALUE;

typedef
  struct {
    GB_TYPE type;
    GB_DATE_VALUE value;
    #if __WORDSIZE == 64
    intptr_t _reserved[2];
    #else
    int _reserved;
    #endif
    }
  GB_DATE;

This structure represents a Date Gambas value.