/// <summary>
/// apply the window position adjustment to convert the position relative to
/// the window to position relative to parent of the window.
/// </summary>
/// <param name="AdjustRowCol"></param>
/// <param name="LocalPos"></param>
/// <returns></returns>
public static IRowCol ParentPosToLocalPos(
this IRowCol AdjustRowCol, IRowCol ParentPos)
{
IRowCol localPos = null;
if (AdjustRowCol == null)
{
localPos = ParentPos;
}
else
{
localPos = ParentPos.Sub(AdjustRowCol);
}
return(localPos);
}