Problem in displaying local laguage QLabel

[vsk.manikandan]

This program works fine, if i copy a string suppose in tamil , also i can able to display by the following code

ui->label->setText(QString::fromUtf8("தருமபுரி"));

but the problem is if i stored same string into a file i cannot able to display it show like some thing like ASCII characters , becoz my application will loads from various location || i should read value from that particular file. also that string not constant value,

please help me.

QSettings settings("/opt/etc/apprc",QSettings::NativeFormat);
QString str = settings.value("loc").toString().simplified()
ui->label->setFont((QString::fromUtf8(str)));

in apprc content is

[General]
loc=தருமபுரி
ver=2.3.25
name=pirai

thanks in Advance...