Hi, everyone!

I'm getting a SegFault while implement an eventFilter in a QDialog subclass.

The code bellow works fine in Qt 4.8.6, in Qt 5.3.1 it Segfault.

Qt Code: 
  1. ISCBase::ISCBase(QWidget *parent) : QDialog(parent)
  2. {
  3.     setGeometry(0, 0, 768, 450);
  4.  
  5.     this->installEventFilter(this);
  6. }
  7.  
  8. bool ISCBase::eventFilter(QObject *object, QEvent *event)
  9. {
  10.     if (event->type() == QEvent::KeyPress) {
  11.         QKeyEvent *keyEvent = (QKeyEvent*) event;
  12.  
  13.         if ((keyEvent->key() == Qt::Key_Return) || (keyEvent->key() == Qt::Key_Enter)) {
  14.             ISCBase *base = qobject_cast<ISCBase*>(object);
  15.  
  16.             if (
  17.                 (base) && (
  18.                 (qobject_cast<QRadioButton*>(base->focusWidget()))     ||
  19.                 (qobject_cast<QCheckBox*>(base->focusWidget()))        ||
  20.                 (qobject_cast<QComboBox*>(base->focusWidget()))        ||
  21.                 (qobject_cast<QDateEdit*>(base->focusWidget()))        ||
  22.                 (qobject_cast<QDoubleSpinBox*>(base->focusWidget()))   ||
  23.                 (qobject_cast<QFontComboBox*>(base->focusWidget()))    ||
  24.                 (qobject_cast<QSlider*>(base->focusWidget()))          ||
  25.                 #if QT_VERSION >= 0x050000
  26.                 (qobject_cast<QKeySequenceEdit*>(base->focusWidget())) ||
  27.                 #endif
  28.                 (qobject_cast<QLineEdit*>(base->focusWidget()))        ||
  29.                 (qobject_cast<QRadioButton*>(base->focusWidget()))     ||
  30.                 (qobject_cast<QSpinBox*>(base->focusWidget()))         ||
  31.                 (qobject_cast<QTimeEdit*>(base->focusWidget())))
  32.             ) {
  33.                 focusNextChild();
  34.  
  35.                 return true;
  36.             }
  37.         }
  38.     }
  39.  
  40.     return QObject::eventFilter(object, event);
  41. }
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Any help will be welcome.