dc rectangle麻烦问一下椭圆咋样编程啊

麻烦问一下椭圆咋样编程啊

使用Windows API BOOL Ellipse( HDC hdc, // handle to DC int nLeftRect, // x-coord of upper-left corner of rectangle int nTopRect, // y-coord of upper-left corner of rectangle int nRightRect, // x-coord of lower-right corner of rectangle int nBottomRect // y-coord of lower-right corner of rectangle );