StringCchCat

function StringCchCat(

  pszDest: PAnsiChar;

  cchDest: size_t;

  const pszSrc: PAnsiChar

):HRESULT; overload;

function StringCchCat(

  pszDest: PWideChar;

  cchDest: size_t;

  const pszSrc: PWideChar

):HRESULT; overload;