qt 6.5.1 original

examples/widgets/itemviews/spinboxdelegate/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(spinboxdelegate LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/itemviews/spinboxdelegate")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(spinboxdelegate
+    delegate.cpp delegate.h
+    main.cpp
+)
+
+set_target_properties(spinboxdelegate PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(spinboxdelegate PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+install(TARGETS spinboxdelegate
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/widgets/itemviews/spinboxdelegate/delegate.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+/*
+    delegate.cpp
+
+    A delegate that allows the user to change integer values from the model
+    using a spin box widget.
+*/
+
+#include "delegate.h"
+
+#include <QSpinBox>
+
+//! [0]
+SpinBoxDelegate::SpinBoxDelegate(QObject *parent)
+    : QStyledItemDelegate(parent)
+{
+}
+//! [0]
+
+//! [1]
+QWidget *SpinBoxDelegate::createEditor(QWidget *parent,
+                                       const QStyleOptionViewItem &/* option */,
+                                       const QModelIndex &/* index */) const
+{
+    QSpinBox *editor = new QSpinBox(parent);
+    editor->setFrame(false);
+    editor->setMinimum(0);
+    editor->setMaximum(100);
+
+    return editor;
+}
+//! [1]
+
+//! [2]
+void SpinBoxDelegate::setEditorData(QWidget *editor,
+                                    const QModelIndex &index) const
+{
+    int value = index.model()->data(index, Qt::EditRole).toInt();
+
+    QSpinBox *spinBox = static_cast<QSpinBox*>(editor);
+    spinBox->setValue(value);
+}
+//! [2]
+
+//! [3]
+void SpinBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
+                                   const QModelIndex &index) const
+{
+    QSpinBox *spinBox = static_cast<QSpinBox*>(editor);
+    spinBox->interpretText();
+    int value = spinBox->value();
+
+    model->setData(index, value, Qt::EditRole);
+}
+//! [3]
+
+//! [4]
+void SpinBoxDelegate::updateEditorGeometry(QWidget *editor,
+                                           const QStyleOptionViewItem &option,
+                                           const QModelIndex &/* index */) const
+{
+    editor->setGeometry(option.rect);
+}
+//! [4]

examples/widgets/itemviews/spinboxdelegate/delegate.h

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef DELEGATE_H
+#define DELEGATE_H
+
+#include <QStyledItemDelegate>
+
+//! [0]
+class SpinBoxDelegate : public QStyledItemDelegate
+{
+    Q_OBJECT
+
+public:
+    SpinBoxDelegate(QObject *parent = nullptr);
+
+    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
+                          const QModelIndex &index) const override;
+
+    void setEditorData(QWidget *editor, const QModelIndex &index) const override;
+    void setModelData(QWidget *editor, QAbstractItemModel *model,
+                      const QModelIndex &index) const override;
+
+    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option,
+                              const QModelIndex &index) const override;
+};
+//! [0]
+
+#endif

examples/widgets/itemviews/spinboxdelegate/main.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+/*
+  main.cpp
+
+  A simple example that shows how a view can use a custom delegate to edit
+  data obtained from a model.
+*/
+
+#include "delegate.h"
+
+#include <QApplication>
+#include <QHeaderView>
+#include <QStandardItemModel>
+#include <QTableView>
+
+//! [0]
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    QStandardItemModel model(4, 2);
+    QTableView tableView;
+    tableView.setModel(&model);
+
+    SpinBoxDelegate delegate;
+    tableView.setItemDelegate(&delegate);
+//! [0]
+
+    tableView.horizontalHeader()->setStretchLastSection(true);
+
+//! [1]
+    for (int row = 0; row < 4; ++row) {
+        for (int column = 0; column < 2; ++column) {
+            QModelIndex index = model.index(row, column, QModelIndex());
+            model.setData(index, QVariant((row + 1) * (column + 1)));
+        }
+//! [1] //! [2]
+    }
+//! [2]
+
+//! [3]
+    tableView.setWindowTitle(QObject::tr("Spin Box Delegate"));
+    tableView.show();
+    return app.exec();
+}
+//! [3]

examples/widgets/itemviews/spinboxdelegate/spinboxdelegate.pro

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+QT += widgets
+requires(qtConfig(tableview))
+
+HEADERS     = delegate.h
+SOURCES     = delegate.cpp \
+              main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/itemviews/spinboxdelegate
+INSTALLS += target