Fix ref counted window close handling.

Instead of refcounting QWindow visibility, we ask the Application
subclass whether quitting is appropriate.

Task-Id: QTBUG-24120
Change-Id: Idd19cc1a3e5742fddded89c7638aaaa5e47c568d
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/corelib/kernel/qcoreapplication_p.h b/src/corelib/kernel/qcoreapplication_p.h
index 861a046f16..112b313129 100644
--- a/src/corelib/kernel/qcoreapplication_p.h
+++ b/src/corelib/kernel/qcoreapplication_p.h
@@ -92,6 +92,10 @@ public:
     QAtomicInt quitLockRef;
     void ref();
     void deref();
+    virtual bool shouldQuit() {
+      return true;
+    }
+    void maybeQuit();
 
     static QThread *theMainThread;
     static QThread *mainThread();