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CreatePolygonRgn The CreatePolygonRgn function creates a polygonal region.
VB4-32,5,6
Declare Function CreatePolygonRgn Lib "gdi32" Alias "CreatePolygonRgn" (lpPoint As POINTAPI, ByVal nCount As Long, ByVal nPolyFillMode As Long) As Long |
VB.NET
System.Drawing.Region |
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Operating Systems Supported |
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Requires Windows NT 3.1 or later; Requires Windows 95 or later |
- lppt
Points to an array of POINT structures that define the vertices of the polygon. The polygon is presumed closed. Each vertex can be specified only once.
- cPoints
Specifies the number of points in the array.
- fnPolyFillMode
Specifies the fill mode used to determine which pixels are in the region. This parameter can be one of the following values:
ALTERNATE
Selects alternate mode (fills area between odd-numbered and even-numbered polygon sides on each scan line).
WINDING
Selects winding mode (fills any region with a nonzero winding value). |
If the function succeeds, the return value is the handle to the region.
If the function fails, the return value is NULL. |
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