[Fakedo0r]

Hola, gracias por tu codigo. Por cierto, desconocia ese error que con cuentas limitadas se producen errores. En todo caso, aqui te dejo una alternativa mia que no me ha dado ningun error hasta hora.

Código Delphi [-]
//******************************************************************************
//* UNIT:         UNT_GetWriteINI
//* AUTOR:        Fakedo0r
//* FECHA:        14.04.2012
//* CORREO:       Luvel88@gmail.com
//* BLOG:         Sub-Soul.blogspot.com
//* DESCRIPCION:  Permite Leer / Escribir ficheros tipo *.INI
//* USO:          GetINI('C:\Config.ini', 'Opciones', 'Puerto', '');
//*               WriteINI('C:\Config.ini', 'Opciones', 'Puerto', '5005');
//******************************************************************************
unit UNT_GetWriteINI;
//******************************************************************************
//DECLARACION DE LIBRERIAS / CLASES
//******************************************************************************
interface

uses
  Winapi.Windows, System.SysUtils;
//******************************************************************************
//DECLARACION DE FUNCIONES / PROCEDIMIENTOS
//******************************************************************************
function GetINI(sPath: String; sName: String; sKeyName: String; sDefault: String): String;
function WriteINI(sPath: String; sName: String; sKeyName: String; sValor: String): Bool;
//******************************************************************************
implementation
//******************************************************************************
//<--- LEE FICHEROS *.INI --->
//******************************************************************************
function GetINI(sPath: String; sName: String; sKeyName: String; sDefault: String): String;
var
  dwFile:   DWORD;
  sBuffer:  String;
  iSize:    Integer;
begin
  iSize := 0;
  dwFile := CreateFile(PChar(sPath), GENERIC_READ, FILE_SHARE_READ, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
  iSize := GetFileSize(dwFile, 0);

  if iSize = - 1 then exit;

  SetLength(sBuffer, iSize);
  iSize := GetPrivateProfileString(PChar(sName), PChar(sKeyName), PChar(sDefault), PChar(sBuffer), iSize, PChar(sPath));

  Result := Copy(sBuffer, 1, iSize);
end;
//******************************************************************************
//<--- ESCRIBE FICHEROS *.INI --->
//******************************************************************************
function WriteINI(sPath: String; sName: String; sKeyName: String; sValor: String): Bool;
begin
  if WritePrivateProfileString(PChar(sName), PChar(sKeyName), PChar(sValor), PChar(sPath)) = True then
    Result := True
  Else
    Result := False;
end;

end.

Saludo.