Parameters
- pen
- PdfPen that determines the color, width, and style of the spline.
- pt0
- Start point.
- pt1
- First control point.
- pt2
- Second control point.
- pt3
- Last point.
Target Platforms: Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Windows Server 2012, Windows Server 2008, Windows Server 2003