'Declaration
 
Public Overridable Sub CalculateArrowhead( _
   ByVal anchor As PointF, _
   ByVal endPoint As PointF, _
   ByVal atEnd As Boolean, _
   ByVal poly() As PointF _
) 

public virtual void CalculateArrowhead( 
   PointF anchor,
   PointF endPoint,
   bool atEnd,
   PointF[] poly
)

Parameters

anchor

The arrowhead anchor position, giving the spot the arrow is coming from

endPoint

The arrowhead end point

atEnd

true if for the "To" end, false if for the "From" end

poly

An array of PointF of at least length four to hold the results

By default the four points are as follows:

• [0] the inner point on the shaft, arrow shaft length from the end point
• [1] and [3] the barbs of the arrowhead, arrow width apart
• [2] the tip of the arrowhead, at the end point

This method is normally called by Paint to produce a point array to be passed to DrawArrowhead in the following fashion:

              if (this.ToArrow && this.PointsCount >= 2) {
                PointF[] toPoly = new PointF[GetArrowheadPointsCount(true)];
                PointF anchor = this.ToArrowAnchorPoint;
                PointF end = this.ToArrowEndPoint;
                CalculateArrowhead(anchor, end, true, toPoly);
                ... now use the toPoly array ...
              }
            

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

GoStroke Class
GoStroke Members