window.cpp Example File

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 #include <QtWidgets>

 #include "window.h"
 #include "colorlisteditor.h"

 Window::Window()
 {
     QItemEditorFactory *factory = new QItemEditorFactory;

     QItemEditorCreatorBase *colorListCreator =
         new QStandardItemEditorCreator<ColorListEditor>();

     factory->registerEditor(QVariant::Color, colorListCreator);

     QItemEditorFactory::setDefaultFactory(factory);

     createGUI();
 }

 void Window::createGUI()
 {
     QList<QPair<QString, QColor> > list;
     list << QPair<QString, QColor>(tr("Alice"), QColor("aliceblue")) <<
             QPair<QString, QColor>(tr("Neptun"), QColor("aquamarine")) <<
             QPair<QString, QColor>(tr("Ferdinand"), QColor("springgreen"));

     QTableWidget *table = new QTableWidget(3, 2);
     table->setHorizontalHeaderLabels(QStringList() << tr("Name")
                                                    << tr("Hair Color"));
     table->verticalHeader()->setVisible(false);
     table->resize(150, 50);

     for (int i = 0; i < 3; ++i) {
         QPair<QString, QColor> pair = list.at(i);

         QTableWidgetItem *nameItem = new QTableWidgetItem(pair.first);
         QTableWidgetItem *colorItem = new QTableWidgetItem;
         colorItem->setData(Qt::DisplayRole, pair.second);

         table->setItem(i, 0, nameItem);
         table->setItem(i, 1, colorItem);
     }
     table->resizeColumnToContents(0);
     table->horizontalHeader()->setStretchLastSection(true);

     QGridLayout *layout = new QGridLayout;
     layout->addWidget(table, 0, 0);

     setLayout(layout);

     setWindowTitle(tr("Color Editor Factory"));
 }