from QStringList to const QString

To convert a QStringList to a const QString, you can join the elements of the QStringList using the QString::join() function. Here's an example:

QStringList stringList;
stringList << "Hello" << "World";

const QString joinedString = stringList.join(", ");

In this example, the QStringList `stringList` contains two elements. The `join()` function is used to combine the elements into a single string, separated by ", ". The resulting QString `joinedString` will be "Hello, World".