Adding Items to Reimplemented QGraphicsScene

ModelTech

I have reimplemented QGraphicsScene to a class called MGraphicsScene as I would like to disable moving any items in case the QGraphicsScene is used for a certain purpose that I have made available through variable Mode. I have the following code for this:

void MGraphicsScene::addItem(QGraphicsItem *Item) {

    if (Mode == INSPECTOR)
        Item->setFlag(QGraphicsItem::ItemIsMovable, false);

    QGraphicsScene::addItem(Item);
}

On top of this, I have reimplemented MGraphicsScene to a class called StructuralScene. I am trying to add items to such StructuralScene by using the following code:

void StructuralScene::onAddedPort(PortDefinition *Connector) {

    PortDiagram *New = new PortDiagram(Connector);
    New->setZValue(-150);
    addItem(New);
}

PortDiagram is a subclass of QGraphicsObject.

For some reason however, the PortDiagram items are not added at all to the scene. I have checked this by inspecting the result of QGraphicsScene::items() after performing StructuralScene::onAddedPort, but this list is indeed empty. Any ideas what is wrong here, i.e., why the items are not added to the scene?

ModelTech

The problem stays if I remove the MGraphicsScene::addItem method completely. So, in which direction should I be looking for potential errors?

ModelTech

I found the problem: I forgot to set the scene for my view! How stupid...

mrjj

@ModelTech
Well on the bright side, you found it yourself. :)

ModelTech

Yes :) But I only found it because I was trying to access the scene in a context menu elsewhere ;)

mrjj

@ModelTech

Hehe, well all productive programmers will have some sort of whoops from time to time. :)