The delegated widgets become hidden

[fulbay]

Hello,

I have some delegated items on a tree widget. When I assign installEventFilter() function to those delegated items, they become invisible Might it be a bug or is there a way to overcome this problem?

Thanks a lot for your help...

[Lykurg]

Most likely your event filter is buggy. Did you call the base class implementation if you don't react on a specific event?

[fulbay]

A part of my implementation is as the following:

bool Mission::eventFilter(QObject *obj, QEvent *event)
{
    QTreeWidgetItem *t;
 
    if (event->type() == QEvent::MouseButtonPress)
    {
        QComboBox *comboBox = dynamic_cast<QComboBox*>(obj);
        if(comboBox != NULL)
        {
            t = findComboBox(comboBox);
            if(t->parent() == treeWidgetItemName) // route
            {
                dynamic_cast<QComboBox*>(treeWidgetMission->itemWidget(t, 1))->setStyleSheet(QString::fromUtf8("background-color: rgb(160, 160, 160);\n"));
                dynamic_cast<QLineEdit*>(treeWidgetMission->itemWidget(t, 0))->setStyleSheet(QString::fromUtf8("background-color: rgb(160, 160, 160);\n"));
            }
            t->setSelected(true);
            treeWidgetMission->setCurrentItem(t);
        }
      //else ...
    }
}

bool Mission::eventFilter(QObject *obj, QEvent *event)
{
    QTreeWidgetItem *t;

    if (event->type() == QEvent::MouseButtonPress)
    {
        QComboBox *comboBox = dynamic_cast<QComboBox*>(obj);
        if(comboBox != NULL)
        {
            t = findComboBox(comboBox);
            if(t->parent() == treeWidgetItemName) // route
            {
                dynamic_cast<QComboBox*>(treeWidgetMission->itemWidget(t, 1))->setStyleSheet(QString::fromUtf8("background-color: rgb(160, 160, 160);\n"));
                dynamic_cast<QLineEdit*>(treeWidgetMission->itemWidget(t, 0))->setStyleSheet(QString::fromUtf8("background-color: rgb(160, 160, 160);\n"));
            }
            t->setSelected(true);
            treeWidgetMission->setCurrentItem(t);
        }
      //else ...
    }
}

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Is there a bug?

Thanks a lot...

Note: Even if I comment out the code in eventFilter(), the same problem exists. If I comment out the code where I assign installEventFilter() method to the delegated widgets, there is no problem, but, of course, eventFilter() is not caught by those widgets then.

[Lykurg]

Is there a bug?

Yes, you need to call the base class impelemtation. Something like:

return QObject::eventFilter(obj, event);

return QObject::eventFilter(obj, event);

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It is also described in QObject::installEventFilter().

[fulbay]

Oh, yes! Thanks! This help is great to me