Incorrect QtProperty Order on QtTreePropertyBrowser

[yaseminyilmaz]

Hi all,

I have added the properties to QtTreePropertyBrowser for selected QGraphicsItem objects on QGraphicsScene. But the property order of the browser changes dynamically when I select an item. I couldn’t see the properties as the following.

Added order: ID -> Label -> X -> Y. For example, incorrect order: Label -> X -> Y -> ID. What can the problem be?

void setPropertiesForManager()
    {
      QtVariantProperty *pIdentifier = mPropertyManager->addProperty(QVariant::Int, "ID");
      pIdentifier->setValue(mID);
 
      QtVariantProperty *pLabel = mPropertyManager->addProperty(QVariant::String, "Label");
      pLabel->setValue(mItemDef);
 
      QtVariantProperty *pXCoord = mPropertyManager->addProperty(QVariant::Int, "X");
      pXCoord->setValue(mNodeList[0]->x());
 
      QtVariantProperty *pYCoord = mPropertyManager->addProperty(QVariant::Int, "Y");
      pYCoord->setValue(mNodeList[0]->y());
 
      IController::getInstance()->updatePropertyBrowser(mPropertyManager);
    }
 
    void updatePropertyBrowser(QtVariantPropertyManager *iPropertyManager)
    {
        this->clear();
 
        this->mPropertyMgr = iPropertyManager;
 
        QSet<QtProperty *>::const_iterator i = mPropertyMgr->properties().constBegin();
        while (i != mPropertyMgr->properties().constEnd()) {
            this->addProperty(*i);
            qDebug() << ((QtVariantProperty *)(*i))->value();
            ++i;
        }
 
        this->setFactoryForManager(mPropertyMgr, mFactory);
        this->show();
    }

void setPropertiesForManager()
    {
      QtVariantProperty *pIdentifier = mPropertyManager->addProperty(QVariant::Int, "ID");
      pIdentifier->setValue(mID);
     
      QtVariantProperty *pLabel = mPropertyManager->addProperty(QVariant::String, "Label");
      pLabel->setValue(mItemDef);
     
      QtVariantProperty *pXCoord = mPropertyManager->addProperty(QVariant::Int, "X");
      pXCoord->setValue(mNodeList[0]->x());
     
      QtVariantProperty *pYCoord = mPropertyManager->addProperty(QVariant::Int, "Y");
      pYCoord->setValue(mNodeList[0]->y());
     
      IController::getInstance()->updatePropertyBrowser(mPropertyManager);
    }
     
    void updatePropertyBrowser(QtVariantPropertyManager *iPropertyManager)
    {
        this->clear();
     
        this->mPropertyMgr = iPropertyManager;
     
        QSet<QtProperty *>::const_iterator i = mPropertyMgr->properties().constBegin();
        while (i != mPropertyMgr->properties().constEnd()) {
            this->addProperty(*i);
            qDebug() << ((QtVariantProperty *)(*i))->value();
            ++i;
        }
     
        this->setFactoryForManager(mPropertyMgr, mFactory);
        this->show();
    }

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Thanks a lot for your helps and explanations,
Yasemin

[d_stranz]

From the QSet documentation (with my emphasis added in bold):

Detailed Description

The QSet class is a template class that provides a hash-table-based set.

QSet<T> is one of Qt's generic container classes. It stores values in an unspecified order and provides very fast lookup of the values. Internally, QSet<T> is implemented as a QHash.

So it doesn't matter what order you add property values, the QSet will store them however it wants.