public static bool DrawEdge(this Graphics graphics, Rectangle rc, EdgeStyle edge, BorderFlags flags, Rectangle?_exclude = null)
{
var rect = new RECT(rc);
using (var hdc = graphics.GetDisposableHdc())
{
bool returnValue;
if (_exclude != null)
{
var exclude = (Rectangle)_exclude;
var regionFlags = ExcludeClipRect(hdc, exclude.Left, exclude.Top, exclude.Right, exclude.Bottom);
}
returnValue = DrawEdge(hdc, ref rect, edge, flags);
return(returnValue);
}
}
private static extern bool DrawEdge(IntPtr hdc, ref RECT rc, EdgeStyle edge, BorderFlags grfFlags);
