PathPointType type

The type of one point of a path: whether it starts a figure, ends a line or is part of a curve, with the flags that the point has.

A GraphicsPath keeps one byte for each point. The three low bits hold the kind of point, and the higher bits are flags: the point closes its figure, it is a marker, or it is in a dash. A PathPointType wraps that byte and reads it through properties. Types come from GetTypes, from PathData, from a TypedPoint and from PathIterator.

Field

Field Type Meaning
_value Byte The type byte, as GDI+ stores it.

The name of the field begins with an underscore because the package treats it as internal. It is public, and it is the only way for a program to make a type: assign a member of GpPathPointType, or members combined with Or, to it.

Properties

All the properties are read-only and return a value from the byte.

PointType
A GpPathPointType: PathPointTypeStart (0) for the first point of a figure, PathPointTypeLine (1) for the end of a line, PathPointTypeBezier (3) for a point of a cubic Bézier curve. The value 2 is reserved. It is the three low bits of the byte.
CloseSubpath
A Boolean, True for the last point of a closed figure.
PathMarker
A Boolean, True for a point set as a marker with SetMarker.
DashMode
A Boolean for the dash flag. GDI+ does not use it.
ReservedFlag1, ReservedFlag2
Boolean values of the two reserved flags.
Dim user As GdiPlusUser = GdiPlusUser()
Dim t As PathPointType
t._value = PathPointTypeBezier Or PathPointTypeCloseSubpath
Debug.Print CLng(t.PointType) & " " & t.CloseSubpath & " " & t.PathMarker      ' 3 True False

Dim user As GdiPlusUser = GdiPlusUser()
Dim p As GraphicsPath = GraphicsPath()
p.AddRectangle 0, 0, 5, 5
Dim types() As PathPointType
p.GetTypes types
Dim t As PathPointType = types(4)
Debug.Print CLng(t.PointType) & " " & t.CloseSubpath      ' 1 True

See Also