pinvoke.net: Edit: gdi32.CreatePolygonRgn

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@pinvoke=http://pinvoke.net/$$$.htm

Summary: The CreatePolygonRgn API

!!!!C# Signature:
 [DllImport("gdi32.dll")]
 static extern IntPtr CreatePolygonRgn(POINT [] lppt, int cPoints,
   int fnPolyFillMode);
!!!!User-Defined Types:
[POINT]

!!!!Notes:
Values for fnPolyFillMode can be 1=Alternate or 2=Winding

!!!!Tips & Tricks:
System.Drawing.Point can be used instead POINT.
[DllImport("gdi32.dll")]
 static extern IntPtr CreatePolygonRgn(Point[] lppt, int cPoints, int fnPolyFillMode);

!!!!Sample Code:
/// <summary>
/// Create a border for custom label control
/// </summary>
/// <returns>
/// if int is returned. Function was successful.
/// if string is returned. Function was failed.
/// </returns>
/// <remarks>Created by Jim Vazquez Castan. jim.vazquez@gmail.com</remarks>
private string SetBorder()
{
    try
    {
        // First we create polygon
        IntPtr forma = CreatePolygonRgn(edges, edges.Length, 1);
        // then we create area
        int iRes = SetWindowRgn(this.Handle, forma, true);
        
        return iRes.ToString();
    }
    catch (Exception ex) { return ex.Message; }
}

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

Documentation: CreatePolygonRgn@msdn on MSDN