ToDo Example

 // Copyright (C) 2026 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

 #include <QtWidgets>

 #include <QtOrganizer/qorganizer.h>

 #include "todoeditor.h"

 QTORGANIZER_USE_NAMESPACE

 TodoEditor::TodoEditor()
 {
     setupGui();
 }

 void TodoEditor::editTodo(const QOrganizerTodo &newTodo)
 {
     todo = newTodo;

     subjectLineEdit->setText(todo.displayLabel());
     startDateEdit->setDateTime(todo.startDateTime());
     dueDateEdit->setDateTime(todo.dueDateTime());
     priorityCombo->setCurrentIndex(
         priorityCombo->findData(QVariant(todo.priority())));
     statusCombo->setCurrentIndex(
         statusCombo->findData(QVariant(todo.status())));
     descriptionTextEdit->setText(todo.description());

     if (!todo.details(QOrganizerItemDetail::TypeVisualReminder).isEmpty()){
         QOrganizerItemVisualReminder reminder =
             todo.detail(QOrganizerItemDetail::TypeVisualReminder);
         int seconds = reminder.secondsBeforeStart();
         alarmCombo->setCurrentIndex(seconds/(15*60));
     } else
         alarmCombo->setCurrentIndex(0);
 }

 void TodoEditor::updateSubject()
 {
     todo.setDisplayLabel(subjectLineEdit->text());
 }

 void TodoEditor::updateDescription()
 {
     todo.setDescription(descriptionTextEdit->toPlainText());
 }

 void TodoEditor::updateDates()
 {
     QDateTime startTime = startDateEdit->dateTime();
     QDateTime dueDateTime = dueDateEdit->dateTime();

     todo.setStartDateTime(startTime);
     todo.setDueDateTime(dueDateTime);

     updateAlarm(alarmCombo->currentIndex());
 }

 void TodoEditor::updateStatus(int index)
 {
     QOrganizerTodoProgress::Status status =
         (QOrganizerTodoProgress::Status) statusCombo->itemData(index).toInt();
     todo.setStatus(status);
 }

 void TodoEditor::updatePriority(int index)
 {
     QOrganizerItemPriority::Priority priority =
         (QOrganizerItemPriority::Priority)
             priorityCombo->itemData(index).toInt();
     todo.setPriority(priority);
 }

 void TodoEditor::updateAlarm(int index)
 {
     int seconds = index * (15*60);
     QDateTime dueDate = todo.dueDateTime();

     QOrganizerItemVisualReminder oldReminder =
         todo.detail(QOrganizerItemDetail::TypeVisualReminder);
     todo.removeDetail(&oldReminder);

     if (seconds == 0)
         return;

     QOrganizerItemVisualReminder reminder;
     reminder.setSecondsBeforeStart(seconds);

     todo.saveDetail(&reminder);
 }

 void TodoEditor::finishEditing()
 {
     emit editingFinished(todo);
 }

 void TodoEditor::setupGui()
 {
     startDateEdit = new QDateTimeEdit;
     dueDateEdit = new QDateTimeEdit;
     subjectLineEdit = new QLineEdit;
     descriptionTextEdit = new QTextEdit;
     doneButton = new QPushButton(tr("Done"));

     setupCombos();

     connect(startDateEdit, SIGNAL(editingFinished()),
         this, SLOT(updateDates()));
     connect(dueDateEdit, SIGNAL(editingFinished()), this, SLOT(updateDates()));
     connect(subjectLineEdit, SIGNAL(editingFinished()),
         this, SLOT(updateSubject()));
     connect(descriptionTextEdit, SIGNAL(textChanged()),
         this, SLOT(updateDescription()));
     connect(statusCombo, SIGNAL(activated(int)), this, SLOT(updateStatus(int)));
     connect(priorityCombo, SIGNAL(activated(int)),
         this, SLOT(updatePriority(int)));
     connect(alarmCombo, SIGNAL(activated(int)), this, SLOT(updateAlarm(int)));
     connect(doneButton, SIGNAL(clicked()), this, SLOT(finishEditing()));

     QVBoxLayout *layout = new QVBoxLayout;
     layout->addWidget(new QLabel(tr("Subject:")));
     layout->addWidget(subjectLineEdit);
     layout->addWidget(new QLabel(tr("Start Date:")));
     layout->addWidget(startDateEdit);
     layout->addWidget(new QLabel(tr("Due Date:")));
     layout->addWidget(dueDateEdit);
     layout->addWidget(new QLabel(tr("Status:")));
     layout->addWidget(statusCombo);
     layout->addWidget(new QLabel(tr("Priority:")));
     layout->addWidget(priorityCombo);
     layout->addWidget(new QLabel(tr("Alarm:")));
     layout->addWidget(alarmCombo);
     layout->addWidget(new QLabel(tr("Description")));
     layout->addWidget(descriptionTextEdit);
     layout->addWidget(doneButton);

     setLayout(layout);
 }

 void TodoEditor::setupCombos()
 {
     priorityCombo = new QComboBox;
     priorityCombo->addItem("Unknown", QOrganizerItemPriority::UnknownPriority);
     priorityCombo->addItem("Highest", QOrganizerItemPriority::HighestPriority);
     priorityCombo->addItem("Extremely high",
         QOrganizerItemPriority::ExtremelyHighPriority);
     priorityCombo->addItem("Very high",
         QOrganizerItemPriority::VeryHighPriority);
     priorityCombo->addItem("High", QOrganizerItemPriority::HighPriority);
     priorityCombo->addItem("Medium", QOrganizerItemPriority::MediumPriority);
     priorityCombo->addItem("Low", QOrganizerItemPriority::LowPriority);
     priorityCombo->addItem("Very low", QOrganizerItemPriority::VeryLowPriority);
     priorityCombo->addItem("Extremely low",
         QOrganizerItemPriority::ExtremelyLowPriority);
     priorityCombo->addItem("Lowest", QOrganizerItemPriority::LowestPriority);

     statusCombo = new QComboBox;
     statusCombo->addItem("Not started",
         QOrganizerTodoProgress::StatusNotStarted);
     statusCombo->addItem("In progress", QOrganizerTodoProgress::StatusInProgress);
     statusCombo->addItem("Complete",
         QOrganizerTodoProgress::StatusComplete);

     alarmCombo = new QComboBox;
     QStringList alarmList;
     alarmList << "None" << "15 minutes" << "30 minutes" << "45 minutes"
               << "1 hour";
     alarmCombo->addItems(alarmList);
 }