Change QWidget::enterEvent signature to take a QEnterEvent

This is a source incompatible change for widget implementors.
Leaving the old enterEvent as a virtual overload is problematic due to
shadowing. Best to make a clean cut, widget reimplementors will get a compile
time warning if they mark their override as such, or if they try to call the
parent class implementation.

Addresses ### Qt 6 comment.

[ChangeLog][QtWidgets][QWidget] The virtual enterEvent handler now receives
a QEnterEvent, which contains information about mouse position and button
states, rather than a plain QEvent.

Change-Id: I233f594fd79c0c090983b3db8532913d00132fde
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/manual/cocoa/nativewidgets/main.cpp b/tests/manual/cocoa/nativewidgets/main.cpp
index 3923e30de7..769bf8664a 100644
--- a/tests/manual/cocoa/nativewidgets/main.cpp
+++ b/tests/manual/cocoa/nativewidgets/main.cpp
@@ -61,7 +61,7 @@ public:
         update();
     }
 
-    void enterEvent(QEvent *)
+    void enterEvent(QEnterEvent *)
     {
         s = 200;
         v = 200;