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FillMode Enumeration

Specifies how the interior of a closed path is filled.

[Visual Basic]
<Serializable>
Public Enum FillMode
[C#]
[Serializable]
public enum FillMode
[C++]
[Serializable]
__value public enum FillMode
[JScript]
public
   Serializable
enum FillMode

Remarks

An application fills the interior of a path using one of two fill modes: alternate or winding. The mode determines how to fill and clip the interior of a closed figure.

The default mode is Alternate. To determine the interiors of closed figures in the alternate mode, draw a line from any arbitrary start point in the path to some point obviously outside the path. If the line crosses an odd number of path segments, the starting point is inside the closed region and is therefore part of the fill or clipping area. An even number of crossings means that the point is not in an area to be filled or clipped. An open figure is filled or clipped by using a line to connect the last point to the first point of the figure.

The Winding mode considers the direction of the path segments at each intersection. It adds one for every clockwise intersection, and subtracts one for every counterclockwise intersection. If the result is nonzero, the point is considered inside the fill or clip area. A zero count means that the point lies outside the fill or clip area.

A figure is considered clockwise or counterclockwise based on the order in which the segments of the figure are drawn.

Members

Member name Description
Alternate Specifies the alternate fill mode.
Winding Specifies the winding fill mode.

Requirements

Namespace: System.Drawing.Drawing2D

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

Assembly: System.Drawing (in System.Drawing.dll)

See Also

System.Drawing.Drawing2D Namespace

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