Объединенные ячейки списка

InstructorsAndTrainees/tasks/customdelegate.h

@@ -0,0 +1,31 @@
+#ifndef CUSTOMDELEGATE_H
+#define CUSTOMDELEGATE_H
+
+#include <QApplication>
+#include <QTreeWidget>
+#include <QTreeWidgetItem>
+#include <QStyledItemDelegate>
+#include <QPainter>
+#include <QStyle>
+#include <QItemDelegate>
+
+enum UserRoles {
+    UserRole_MergeCell = Qt::UserRole + 1  // Пользовательская роль для хранения признака объединения
+};
+
+class CustomDelegate : public QItemDelegate
+{
+public:
+    //using QStyledItemDelegate::QStyledItemDelegate;
+
+    CustomDelegate(QObject *parent = nullptr);
+
+    void paint(QPainter *painter,
+               const QStyleOptionViewItem &option,
+               const QModelIndex &index) const override;
+
+    QSize sizeHint(const QStyleOptionViewItem &option,
+                   const QModelIndex &index) const override;
+};
+
+#endif // CUSTOMDELEGATE_H