QCommandLineParser parser; parser.addPositionalArgument("filename", "The name of the file to process."); parser.process(app); QString filename = parser.positionalArguments().at(0);
QCommandLineParser parser; parser.addPositionalArgument("source", "The source file to compile."); parser.addPositionalArgument("destination", "The file to write the output to."); parser.process(app); QString source = parser.positionalArguments().at(0); QString destination = parser.positionalArguments().at(1);This code adds two positional arguments to the parser: "source" and "destination". The parser is then processed, and the first and second positional arguments are retrieved from the parser's positionalArguments() method. From the examples, it is clear that the QCommandLineParser class is a part of the Qt library.