private static extern int GetColumnInfobyPK(IShellView view, bool isAll, PROPERTYKEY pk, out CM_COLUMNINFO res);
public static extern int GetColumnInfobyIndex(IShellView view, bool isAll, int index, out CM_COLUMNINFO res);
private static extern int GetColumnInfobyPK(IShellView view, bool isAll, PROPERTYKEY pk, out CM_COLUMNINFO res);
public static extern int GetColumnInfobyIndex(IShellView view, bool isAll, int index, out CM_COLUMNINFO res);