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50
51//! [0]
52#include <QApplication>
53#include <QCommandLineParser>
54#include <QCommandLineOption>
55
56#include "mainwindow.h"
57
58int main(int argc, char *argv[])
59{
60 Q_INIT_RESOURCE(application);
61#ifdef Q_OS_ANDROID
62 QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
63#endif
64
65 QApplication app(argc, argv);
66 QCoreApplication::setOrganizationName("QtProject");
67 QCoreApplication::setApplicationName("Application Example");
68 QCoreApplication::setApplicationVersion(QT_VERSION_STR);
69 QCommandLineParser parser;
70 parser.setApplicationDescription(QCoreApplication::applicationName());
71 parser.addHelpOption();
72 parser.addVersionOption();
73 parser.addPositionalArgument(name: "file", description: "The file to open.");
74 parser.process(app);
75
76 MainWindow mainWin;
77 if (!parser.positionalArguments().isEmpty())
78 mainWin.loadFile(fileName: parser.positionalArguments().first());
79 mainWin.show();
80 return app.exec();
81}
82//! [0]
83

source code of qtbase/examples/widgets/mainwindows/application/main.cpp