How to set correct text codec for Turkish characters

[umtkyck]

Hi,

I am reading LineEdit with below code and send byteArray to SerialPort:

QByteArray msg=ui->dataMessageSetLineEdit->text().toUtf8();

but Actually I can not send like 'İ' ,'Ü','Ş' turkish characters.How can I solve this problem?
I also tried in main.cpp:

QLocale::setDefault(QLocale(QLocale::Turkish, QLocale::Turkey));
QTextCodec::setCodecForLocale( QTextCodec::codecForName("UTF-8") );
QTextCodec::setCodecForTr( QTextCodec::codecForName("UTF-8") );
QTextCodec::setCodecForCStrings ( QTextCodec::codecForName("UTF-8") );

[umtkyck]

How can I solve this?