1 files changed, 49 insertions, 0 deletions
diff --git a/src/qml/doc/snippets/qml/exposing-state/singleton.h b/src/qml/doc/snippets/qml/exposing-state/singleton.h
new file mode 100644
index 0000000000..e600531883
--- /dev/null
+++ b/src/qml/doc/snippets/qml/exposing-state/singleton.h
@@ -0,0 +1,49 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef SINGLETON_H
+#define SINGLETON_H
+
+#include <QtQml/qobject.h>
+#include <QtQml/qqml.h>
+#include <QtQml/qqmlengine.h>
+
+//![0]
+// Singleton.h
+class Singleton : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(int thing READ thing WRITE setThing NOTIFY thingChanged FINAL)
+    QML_ELEMENT
+    QML_SINGLETON
+
+public:
+    Singleton(QObject *parent = nullptr) : QObject(parent) {}
+
+    int thing() const { return m_value; }
+    void setThing(int v)
+    {
+        if (v != m_value) {
+            m_value = v;
+            emit thingChanged();
+        }
+    }
+
+signals:
+    void thingChanged();
+
+private:
+    int m_value = 12;
+};
+//![0]
+
+inline void setTheThing(QQmlEngine *engine)
+{
+//![1]
+    Singleton *singleton
+            = engine->singletonInstance<Singleton *>("MyModule", "Singleton");
+    singleton->setThing(77);
+//![1]
+}
+
+#endif