[Qt-interest] why .fromLocal8Bit() is needed

[chandrasekar wagmare]

hi friends,
        i try all the assistant documents but cant find ... what is the
difference between this two .. to get readyReadStandardError() from
QProcess()
          1.
              QString path = process.readAllStandardError();
              path = outputtextedit->setText(path);

          2.
               QByteArray newData = process.readAllStandardError();
             QString text = outputTextEdit->toPlainText()
                                      + QString::fromLocal8Bit(newData);
                    outputTextEdit->setPlainText(text);

why we need to convert QString as like 2 nd one .... what will happen if i
use 1 st condition

-- 
CHANDRU
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