QQmlEngine: Add module + type based singletonInstance overload

This makes it consistent with QQmlComponent::loadFromModule. It also
avoids the issue the qmlTypeId does currently only work if the module
has been imported; though that will be fixed in a separate commit.

Change-Id: Id284f7ed2de7af461b782c5b5d71d9bfc0039844
Reviewed-by: Sami Shalayel <sami.shalayel@qt.io>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/qml/doc/snippets/code/src_qml_qqmlengine.cpp b/src/qml/doc/snippets/code/src_qml_qqmlengine.cpp
index 7057718b52..ff4cf634a0 100644
--- a/src/qml/doc/snippets/code/src_qml_qqmlengine.cpp
+++ b/src/qml/doc/snippets/code/src_qml_qqmlengine.cpp
@@ -42,3 +42,10 @@ void wrapper4(int typeId) {
     QJSValue instance = engine.singletonInstance<QJSValue>(typeId);
 //! [4]
 }
+
+void wrapper5() {
+///! [5]
+    QQmlEngine engine;
+    MySingleton *singleton = engine.singletonInstance<MySingleton *>("mymodule", "MySingleton");
+///! [5]
+}