Nov 28, 2009 · If compiled with STL compatibility, QString has a static method to convert a std::string to a QString:

I'd like to format a string for Qt label, I'm programming in C++ on Qt. In ObjC I would write something like: NSString *format=[NSString stringWithFormat: ... ]; How to do something like that in...

@eyllanesc the question text says "How to output the content of qstring into the console?" , it seems OP assumes converting to std::string is the only way. It's really two questions being asked at once .

Jul 24, 2015 · To stay consistent with this, I've been trying to accept and return QString from most of my function calls, however I find myself converting to and from std::string a lot to use most of the …

I want to get QString from another QString, when I know necessary indexes. For example: Main string: "This is a string". I want to create new QString from first 5 symbols and get "This ". input : f...

Jul 9, 2010 · Is there a QString function which takes an int and outputs it as a QString?

Sep 14, 2014 · For historical reasons, QString distinguishes between a null string and an empty string. A null string is a string that is initialized using QString 's default constructor or by passing (const char …

Nov 13, 2018 · Generally speaking: If you want to initialize a QString from a char*, use QStringLiteral. If you want to pass it to a method, check if that method has an overload for QLatin1String - if yes you …

QString("Put something here %1 and here %2") .arg(replacement1) .arg(replacement2); but things get itchy as soon as you have the faintest chance that replacement1 actually contains %1 or even %2 …

Hence this is slower than passing a QString, especially if the QString parameter is much used. I would recommend to always pass a const QString&, and if you need maximum speed on the called side, …