checkfilename

function checkfilename(

  const filename: filenamety;

  const mask: filenamety;

  casesensitive: Boolean = False

):Boolean; overload;

function checkfilename(

  const filename: filenamety;

  const mask: filenamearty;

  casesensitive: Boolean = False

):Boolean; overload;

function checkfilename(

  const filename: filenamety;

  const dirstream: dirstreamty

):Boolean; overload;