Question

on a dialog form a have a few items, amongs them I have a QListView and QTreeView.
I’d like to load them to a QSet during initialization of this dialog. What’s the best way to do it?

Answer 1

You could loop through the children of the dialog, try to cast them to QAbstractItemView* and add those that pass:

#include <QtGui>

int main(int argc, char **argv) {
  QApplication app(argc, argv);

  QVBoxLayout *layout = new QVBoxLayout;
  layout->addWidget(new QLabel("Hello!"));
  layout->addWidget(new QListView);
  layout->addWidget(new QTreeView);
  layout->addWidget(new QPushButton("Click me!"));

  QDialog d;
  d.setLayout(layout);
  d.show();

  QSet<QAbstractItemView*> set;
  for (int i = 0; i < d.children().size(); ++i) {
    QAbstractItemView *view = qobject_cast<QAbstractItemView*>(d.children().at(i));
    if (view) {
      set << view;
    }
  }

  qDebug() << set.size();

  return app.exec();
}