This is what you can with Qt:

    #include <QApplication>
    #include <QWidget>
    #include <QPainter>

    class widget : public QWidget {
    void paintEvent(QPaintEvent*) override {
        QPainter(this).drawEllipse(QPoint(320, 240), 100, 100);
    }
    };

    int main(int argc, char *argv[]) {
        QApplication app(argc, argv);
        widget w;
        w.resize(640, 480);
        w.show();
        return app.exec();
    }

It doesn't seem too complicated to me.