Custom tree view with checkbox and icon - Plz help

[sagarbade]

Thanks. I currently have the following code

QStandardItemModel *model = new QStandardItemModel();
  QStandardItem *parentItem = new QStandardItem(QIcon("C:\\dataset_small.png"), "Authors");
  model->appendRow(parentItem);
  QStandardItem *author1 = new QStandardItem(QIcon("C:\\dataset_small.png"), "Smith, V");
  author1->setCheckable(true);
  parentItem->appendRow(author1);
  parentItem->appendRow(new QStandardItem(QIcon("C:\\dataset_small.png"), "Campbell, C"));
  for (int i = 0; i < 3; ++i) {
    QStandardItem *item = new QStandardItem(QIcon("C:\\dataset_small.png"), QString("Book # %0").arg(i+1));
    item->setCheckable(true);
    author1->insertRow(i, item);
  }
  ui.treeView->setModel(model);

QStandardItemModel *model = new QStandardItemModel();
  QStandardItem *parentItem = new QStandardItem(QIcon("C:\\dataset_small.png"), "Authors");
  model->appendRow(parentItem);
  QStandardItem *author1 = new QStandardItem(QIcon("C:\\dataset_small.png"), "Smith, V");
  author1->setCheckable(true);
  parentItem->appendRow(author1);
  parentItem->appendRow(new QStandardItem(QIcon("C:\\dataset_small.png"), "Campbell, C"));
  for (int i = 0; i < 3; ++i) {
    QStandardItem *item = new QStandardItem(QIcon("C:\\dataset_small.png"), QString("Book # %0").arg(i+1));
    item->setCheckable(true);
    author1->insertRow(i, item);
  }
  ui.treeView->setModel(model);

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producing the attached image. Remaining things are:
1) I like the checkbox for the author node, but I'd like to have the radio button for the book items to force only one book can be selected at the time. Could you please elaborate on the QItemDelegate?
2) I also want to have a count of children next to the labels meaning I want to have a "2" next to the "Authors" string (since there are 2 authors) and a "3" next to "Smith, V" because he has 3 books

hey ...What About TreeView Qml Type