TFile.Open

public class function TFile.Open(

  const aPath: string;

  const aMode: TFileMode

):TFileStream; overload;

class function TFile.Open(

  const aPath: string;

  const aMode: TFileMode;

  const aAccess: TFileAccess

):TFileStream; overload;

class function TFile.Open(

  const aPath: string;

  const aMode: TFileMode;

  const aAccess: TFileAccess;

  const aShare: TFileShare

):TFileStream; overload;