How does QByteArray gets assigned to QStriing

[Qt Enthusiast]

In the following code

QFile data(ofilename.toLatin1().constData());
QString line;
if (data.open(QFile::ReadOnly)) {
setText(data.readAll());
setModified(FALSE);
data.close();
d_filename = ofilename;
emit fileNameChanged(ofilename);
}

data.readAll has return type QByteArray but setText takes QString as argument then how does setText(data.readAll()); conversion happens from QByteArray to QString

[kshegunov]

@Qt-Enthusiast
The QByteArray object doesn't get assigned to QString. Rather a temporary QString instance is created from the byte array due to the implicit QString constructor that accepts a byte array and thanks of course to the overloading rules in C++.

PS:

QFile data(ofilename.toLatin1().constData());

should just be:

QFile data(ofilename);

As per the respective QFile constructor.