void MultiViewWidget::removeView() { ContainerWidget *container = qobject_cast<ContainerWidget *>(sender()); if (container) { QSplitter *splitter = qobject_cast<QSplitter *>(container->parent()); if (splitter && splitter->count() == 2) { // Get its parent, and insert the other widget into it, delete this widget. QSplitter *splitterParent = qobject_cast<QSplitter *>(splitter->parent()); QWidget *moveWidget = splitter->widget(0); if (moveWidget == container) moveWidget = splitter->widget(1); setActiveWidget(moveWidget); if (splitterParent) { int idx = splitterParent->indexOf(splitter); splitterParent->insertWidget(idx, moveWidget); splitter->deleteLater(); } else if (splitter->parent() == this) { // No more splits - back to single view widget. QVBoxLayout *layoutParent = qobject_cast<QVBoxLayout *>(layout()); if (layoutParent) { layoutParent->addWidget(moveWidget); layoutParent->removeWidget(splitter); splitter->deleteLater(); } } } else if (container->parent() == this) { // Delete the current container, and create the option container. QVBoxLayout *vLayout = qobject_cast<QVBoxLayout *>(layout()); container->deleteLater(); ContainerWidget *newContainer = createContainer(); vLayout->addWidget(newContainer); setActiveWidget(newContainer); } } }