Unify shared context initialization

Setting shared context on core application object should
be done before core application is initialised. This is handled
correctly in widgets part but not in qml part. Unify
our shared context creation and call WebEngine::initialize()
before QCoreaApplication is created. Context has to be set shared
before first window's QPlatformOpenGLContext is created and not
before window itself is created as documentation claimed.

Keep the older code running, but print the warning.

Update one test to test new initialization order, but keep the others
to check if they still works.

[ChangeLog] WebEngine::initialize() has to be called before
QCoreApplication is created.

Task-number: QTBUG-76391
Change-Id: Iff938493a4d21f360110136192daedb6199584c1
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/examples/webengine/recipebrowser/main.cpp b/examples/webengine/recipebrowser/main.cpp
index 6e6d69804..e61b9e0f5 100644
--- a/examples/webengine/recipebrowser/main.cpp
+++ b/examples/webengine/recipebrowser/main.cpp
@@ -58,9 +58,10 @@ int main(int argc, char *argv[])
 {
     QCoreApplication::setOrganizationName("QtExamples");
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
-    QGuiApplication app(argc, argv);
     QtWebEngine::initialize();
 
+    QGuiApplication app(argc, argv);
+
     QQuickStyle::setStyle(QStringLiteral("Material"));
 
     QQmlApplicationEngine engine;