problem in writing text with QFile

[wei243]

QFile file(fileName);
file.open(QIODevice::WriteOnly);
QDataStream out(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
out << "TESTING";
QApplication::restoreOverrideCursor();
file.close();

QFile file(fileName);
file.open(QIODevice::WriteOnly);
QDataStream out(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
out << "TESTING";
QApplication::restoreOverrideCursor();
file.close();

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after i run above code the text file bcome
untitled.JPG

pls help me slove this problem...
thx