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50
51#include <QApplication>
52#include <QCommandLineParser>
53
54#include "mainwindow.h"
55
56int main(int argc, char *argv[])
57{
58 Q_INIT_RESOURCE(sdi);
59 QApplication app(argc, argv);
60 QCoreApplication::setApplicationName("SDI Example");
61 QCoreApplication::setOrganizationName("QtProject");
62 QCoreApplication::setApplicationVersion(QT_VERSION_STR);
63 QCommandLineParser parser;
64 parser.setApplicationDescription(QCoreApplication::applicationName());
65 parser.addHelpOption();
66 parser.addVersionOption();
67 parser.addPositionalArgument(name: "file", description: "The file(s) to open.");
68 parser.process(app);
69
70 MainWindow *mainWin = nullptr;
71 const QStringList posArgs = parser.positionalArguments();
72 for (const QString &file : posArgs) {
73 MainWindow *newWin = new MainWindow(file);
74 newWin->tile(previous: mainWin);
75 newWin->show();
76 mainWin = newWin;
77 }
78
79 if (!mainWin)
80 mainWin = new MainWindow;
81 mainWin->show();
82
83 return app.exec();
84}
85

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