QGraphicsView::fitInView()

[stella1016]

Anybody knows the implied difference between these pieces of code? Any duplicated updating?
Thanks.

void my_graphicsView::resizeEvent(QResizeEvent *event)
{
setWidth(event->size().width());
setHeight(event->size().height());
 
fitInView(QRectF(0,0,width(),height()),Qt::KeepAsp ectRatioByExpanding);
arrangeNodes();
 
m_scene->setSceneRect(0,0,width(),height());
this->setSceneRect(0,0,width(),height());
 
update();
}

void my_graphicsView::resizeEvent(QResizeEvent *event)
{
setWidth(event->size().width());
setHeight(event->size().height());

fitInView(QRectF(0,0,width(),height()),Qt::KeepAsp ectRatioByExpanding);
arrangeNodes();

m_scene->setSceneRect(0,0,width(),height());
this->setSceneRect(0,0,width(),height());

update();
}

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void my_graphicsView::resizeEvent(QResizeEvent *event)
{
setWidth(event->size().width());
setHeight(event->size().height());
 
fitInView(QRectF(0,0,width(),height()),Qt::KeepAsp ectRatioByExpanding);
arrangeNodes();
 
m_scene->update(0,0,width(),height());
update();
}

void my_graphicsView::resizeEvent(QResizeEvent *event)
{
setWidth(event->size().width());
setHeight(event->size().height());

fitInView(QRectF(0,0,width(),height()),Qt::KeepAsp ectRatioByExpanding);
arrangeNodes();

m_scene->update(0,0,width(),height());
update();
}

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