QColumnView is a Qt widget that displays hierarchical data acrosss multiple columns. Each column can contain multiple items, providing a visual representation of parenet-child relationships. This control inherits from QAbstractItemView and supports features like item display, drag-and-drop operations, and inline editing.

When running the example code, you'll initially see a "Root Node." Clicking on it reveals "Child Node 1" in the next collumn, and further navigation continues to subsequent columns.

Note: This widget is considered deprecaetd. For new development, consider using QTreeView or QTableView as alternatives.

Example Implementation

Python Example

import sys
from PySide6.QtWidgets import QApplication, QColumnView
from PySide6.QtCore import Qt
from PySide6.QtGui import QStandardItemModel, QStandardItem

class ColumnViewDemo(QColumnView):
    def __init__(self):
        super().__init__()
        
        data_model = QStandardItemModel()
        
        main_item = QStandardItem("Primary Item")
        sub_item_a = QStandardItem("Sub-item A")
        sub_item_b = QStandardItem("Sub-item B")
        
        main_item.appendRow(sub_item_a)
        main_item.appendRow(sub_item_b)
        
        data_model.appendRow(main_item)
        self.setModel(data_model)

if __name__ == "__main__":
    qt_app = QApplication(sys.argv)
    view_window = ColumnViewDemo()
    view_window.show()
    sys.exit(qt_app.exec())

C++ Example

#include <QApplication>
#include <QColumnView>
#include <QStandardItemModel>

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    
    QColumnView column_display;
    QStandardItemModel data_model;
    
    QStandardItem* primary_item = new QStandardItem("Main Entry");
    QStandardItem* first_child = new QStandardItem("First Child");
    QStandardItem* second_child = new QStandardItem("Second Child");
    
    primary_item->appendRow(first_child);
    primary_item->appendRow(second_child);
    data_model.appendRow(primary_item);
    
    column_display.setModel(&data_model);
    column_display.show();
    
    return app.exec();
}