WinRT: Gracefully exit an application

While it is not recommended by Microsoft to manually exit an
application, currently applications just hang when exiting main().

Instead when QCoreApplication::exit() is called use the CoreApplication
to properly invoke native Exit() and let the application completely shut
down.

Add a warning to notify developer about this non-standard behavior, as
usually the system is supposed to take care of suspending and closing.

Certification still passes for Windows RT and Windows Phone.

Task-number: QTBUG-43862
Change-Id: Ia34443ea75daaaeca0bee2a0c9fcc568c0659262
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

0 files changed, 0 insertions, 0 deletions