#include <QtWidgets/QApplication>
#include <QtCore/QAbstractListModel>
#include <QtGui/QPixmap>
#include <QtGui/QPainter>
#include <QtGui/QColor>
#include <QtWidgets/QListView>

class Model : public QAbstractListModel {
public:
  Model() {
    image = new QPixmap(70,70);
    QPainter painter(image);
    painter.fillRect(image->rect(), QColor("red"));
  }

  int rowCount(const QModelIndex & parent = QModelIndex()) const {
    return 10;
  }

  QVariant data(const QModelIndex & index, int role = Qt::DisplayRole) const {
    switch (role) {
    case Qt::DisplayRole:
      return QString("Item %1").arg(index.row());
    case Qt::DecorationRole:
      if (index.row() % 2) {
        return *image;
      }
    }
    return QVariant();
  }
private:
  QPixmap* image;
};

#include <QtWidgets/QDialog>
class QListViewIconMode : public QDialog {
public:
  QListViewIconMode(QWidget *parent = nullptr) : QDialog(parent) {
    auto listView = new QListView(this);
    listView->setGeometry(QRect(10, 10, 581, 381));
    listView->setViewMode(QListView::IconMode);
    listView->setModel(new Model());
  }
};

int main(int argc, char *argv[]) {
    QApplication a(argc, argv);
    QListViewIconMode w;
    w.show();
    return a.exec();
}