Make examples self-contained

Remove shared main entry function and shared resources (that were not
used anyway), and simplify the entry point:
* Get rid of special handling of QT_QUICK_CORE_PROFILE,
  QT_QUICK_MULTISAMPLE environment variables.
* Remove QQmlFileSelector, which is not used in the examples.
* Do set QtCoreAppication::organizationName to 'QtExamples', so that the
  settings are separate from QtProject. This follows recent changes in
  Qt WebEngine examples.

Change-Id: I01851b3434901fefc2738136a2f1795d682a3233
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 22 insertions, 2 deletions

diff --git a/examples/demos/clocks/main.cpp b/examples/demos/clocks/main.cpp
index c2508dc6a..5889eabad 100644
--- a/examples/demos/clocks/main.cpp
+++ b/examples/demos/clocks/main.cpp
@@ -47,5 +47,25 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
-#include "../shared/shared.h"
-DECLARATIVE_EXAMPLE_MAIN(demos/clocks/clocks)
+
+#include <QGuiApplication>
+#include <QQmlEngine>
+#include <QQmlFileSelector>
+#include <QQuickView>
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+    QCoreApplication::setOrganizationName("QtExamples");
+
+    QGuiApplication app(argc, argv);
+
+    QQuickView view;
+    view.connect(view.engine(), &QQmlEngine::quit, &app, &QCoreApplication::quit);
+    view.setSource(QUrl("qrc:/demos/clocks/clocks.qml"));
+    if (view.status() == QQuickView::Error)
+        return -1;
+    view.setResizeMode(QQuickView::SizeRootObjectToView);
+    view.show();
+    return app.exec();
+}