Convert bool to QString

Use QVariant!

From bool to QString:

   bool bInput = false;
   QString s = QVariant(bInput).toString();

From QString to bool:

  QString s = "true";
  bool bInUse = QVariant(s).toBool();    

You can use the static QString::number method - the bool will be implicitly cast to int to match the integer form of the static factory method, which returns a QString containing 0 or 1.

bool test = true;
QString s = QString::number(test);

qDebug() displays a bool variable as "true" or "false". If you want to get such a string you can change your code a little bit:

bool test = true;
QString boolText = test ? "true" : "false";