WinAPI: Ellipse 绘制椭圆

//声明:
Ellipse(
  DC: HDC;                {设备环境句柄}
  X1, Y1, X2, Y2: Integer {两个点的坐标}
): BOOL;

//举例: procedure TForm1.FormPaint(Sender: TObject); const x1 = 20; y1 = 20; x2 = 200; y2 = 100; begin Ellipse(Canvas.Handle, x1,y1, x2,y2); end;
//效果图:

原文地址:https://www.cnblogs.com/del/p/1066317.html