--- MainWindow.event(), Window native handle created
--- MainWindow.paintEvent called
--- MainWindow.paintEvent called
--- MainWindow.paintEvent called
QPainter::begin: Paint device returned engine == 0, type: 3
QPainter::setCompositionMode: Painter not active
QPainter::fillRect: Painter not active
QPainter::setCompositionMode: Painter not active
QPainter::setBrush: Painter not active
QPainter::setPen: Painter not active
QPainter::drawPath: Painter not active
QPainter::setPen: Painter not active
QPainter::setFont: Painter not active
QPainter::setFont: Painter not active
QPainter::setBrush: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::setBrush: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::setBrush: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::end: Painter not active, aborted
--- MainWindow.paintEvent called
--- MainWindow.paintEvent called
--- MainWindow.paintEvent called
--- MainWindow.event(), Window native handle created