Graphics::DrawClosedCurve(constPen*,constPoint*,INT) method (gdiplusgraphics.h)

The Graphics::DrawClosedCurve method draws a closed cardinal spline.

Syntax

Status DrawClosedCurve(
  [in] const Pen   *pen,
  [in] const Point *points,
  [in] INT         count
);

Parameters

[in] pen

Type: const Pen*

Pointer to a pen that is used to draw the closed cardinal spline.

[in] points

Type: const Point*

Pointer to an array of Point objects that specify the coordinates of the closed cardinal spline. The array of Point objects must contain a minimum of three elements.

[in] count

Type: INT

Integer that specifies the number of elements in the points array.

Return value

Type: Status

If the method succeeds, it returns Ok, which is an element of the Status enumeration.

If the method fails, it returns one of the other elements of the Status enumeration.

Remarks

In a closed cardinal spline, the curve continues through the last point in the points array and connects with the first point in the array.

Examples

The following example draws a closed cardinal spline.

VOID Example_DrawClosedCurve(HDC hdc)
{
   Graphics graphics(hdc);

   // Define a Pen object and an array of Point objects.
   Pen greenPen(Color(255, 0, 0, 255), 3);

   Point point1(100, 100);
   Point point2(200, 50);
   Point point3(400, 10);
   Point point4(500, 100);
   Point point5(600, 200);
   Point point6(700, 400);
   Point point7(500, 500);

   Point curvePoints[7] = {
      point1,
      point2,
      point3,
      point4,
      point5,
      point6,
      point7};

   // Draw the closed curve.
   graphics.DrawClosedCurve(&greenPen, curvePoints, 7);

   // Draw the points in the curve.
   SolidBrush redBrush(Color(255, 255, 0, 0));
   graphics.FillEllipse(&redBrush, Rect(95, 95, 10, 10));
   graphics.FillEllipse(&redBrush, Rect(495, 95, 10, 10));
   graphics.FillEllipse(&redBrush, Rect(495, 495, 10, 10));
   graphics.FillEllipse(&redBrush, Rect(195, 45, 10, 10));
   graphics.FillEllipse(&redBrush, Rect(395, 5, 10, 10));
   graphics.FillEllipse(&redBrush, Rect(595, 195, 10, 10));
   graphics.FillEllipse(&redBrush, Rect(695, 395, 10, 10));
}

Requirements

See also

Cardinal Splines

DrawCurve Methods

Drawing Cardinal Splines

FillClosedCurve Methods

Graphics

Pen

Point