Return subclass type from overrides of QEvent::clone

C++ allows overrides to return a covariant type, so if calling code has
already cast the callee down to the right type, don't require it to cast
the returned clone down as well.

Pick-to: 6.0 6.0.0
Change-Id: I802f00a3c78e03047046986d0ed0a479b47573b8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/corelib/kernel/qcoreevent.h b/src/corelib/kernel/qcoreevent.h
index 2133ab6213..780b84f98d 100644
--- a/src/corelib/kernel/qcoreevent.h
+++ b/src/corelib/kernel/qcoreevent.h
@@ -371,7 +371,7 @@ public:
     ~QTimerEvent();
     int timerId() const { return id; }
 
-    QEvent *clone() const override { return new QTimerEvent(*this); };
+    QTimerEvent *clone() const override { return new QTimerEvent(*this); };
 
 protected:
     int id;
@@ -390,7 +390,7 @@ public:
     bool polished() const { return type() == ChildPolished; }
     bool removed() const { return type() == ChildRemoved; }
 
-    QEvent *clone() const override { return new QChildEvent(*this); };
+    QChildEvent *clone() const override { return new QChildEvent(*this); };
 
 protected:
     QObject *c;
@@ -405,7 +405,7 @@ public:
 
     inline QByteArray propertyName() const { return n; }
 
-    QEvent *clone() const override { return new QDynamicPropertyChangeEvent(*this); };
+    QDynamicPropertyChangeEvent *clone() const override { return new QDynamicPropertyChangeEvent(*this); };
 
 private:
     QByteArray n;
@@ -419,7 +419,7 @@ public:
     ~QDeferredDeleteEvent();
     int loopLevel() const { return level; }
 
-    QEvent *clone() const override { return new QDeferredDeleteEvent(*this); };
+    QDeferredDeleteEvent *clone() const override { return new QDeferredDeleteEvent(*this); };
 
 private:
     int level;