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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++ #include <QDBusInterface>
++ #include <QDBusReply>
++
++ void DBusInterface_main()
++ {
++ //! [0]
++ QDBusInterface remoteApp( "com.example.Calculator", "/Calculator/Operations",
++ "org.mathematics.RPNCalculator" );
++ remoteApp.call( "PushOperand", 2 );
++ remoteApp.call( "PushOperand", 2 );
++ remoteApp.call( "ExecuteOperation", "+" );
++ QDBusReply<int> reply = remoteApp.call( "PopOperand" );
++
++ if ( reply.isValid() )
++ printf( "%d", reply.value() ); // prints 4
++ //! [0]
++ }