function TryNewFileInStream( const Args: IFileArgs): IFileInputStream;

function TryNewFileInStream( const FileName: string): IFileInputStream;

function TryNewFileInStream( const FileName: string; Mode: Word; Rights: Cardinal = 0): IFileInputStream;

function TryNewFileInStream( const FileName: string; Access: TFileAccess; Share: TFileShare; Distrib: TFileDistrib): IFileInputStream;

Defined in: DSStreams