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>

2 files changed, 2 insertions, 2 deletions

diff --git a/src/widgets/dialogs/qwizard_win.cpp b/src/widgets/dialogs/qwizard_win.cpp
index c80db1fd94..9575dc7fba 100644
--- a/src/widgets/dialogs/qwizard_win.cpp
+++ b/src/widgets/dialogs/qwizard_win.cpp
@@ -94,7 +94,7 @@ QSize QVistaBackButton::sizeHint() const
     return QSize(width, height);
 }
 
-void QVistaBackButton::enterEvent(QEvent *event)
+void QVistaBackButton::enterEvent(QEnterEvent *event)
 {
     if (isEnabled())
         update();
diff --git a/src/widgets/dialogs/qwizard_win_p.h b/src/widgets/dialogs/qwizard_win_p.h
index 520046ca02..a8799e4b86 100644
--- a/src/widgets/dialogs/qwizard_win_p.h
+++ b/src/widgets/dialogs/qwizard_win_p.h
@@ -75,7 +75,7 @@ public:
     inline QSize minimumSizeHint() const override
     { return sizeHint(); }
 
-    void enterEvent(QEvent *event) override;
+    void enterEvent(QEnterEvent *event) override;
     void leaveEvent(QEvent *event) override;
     void paintEvent(QPaintEvent *event) override;
 };