Pass QDate, QTime as value classes, rather than by const reference

This can, of course, only be done in private APIs - but comment on
public APIs to do the same at Qt 6.

Change-Id: I3c79951572be3c37b0b0c5b1b05bced051a40964
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/widgets/widgets/qdatetimeedit_p.h b/src/widgets/widgets/qdatetimeedit_p.h
index 453ac36d15..dcf8863c8b 100644
--- a/src/widgets/widgets/qdatetimeedit_p.h
+++ b/src/widgets/widgets/qdatetimeedit_p.h
@@ -148,19 +148,19 @@ public:
     explicit QCalendarPopup(QWidget *parent = nullptr, QCalendarWidget *cw = nullptr,
                             QCalendar ca = QCalendar());
     QDate selectedDate() { return verifyCalendarInstance()->selectedDate(); }
-    void setDate(const QDate &date);
-    void setDateRange(const QDate &min, const QDate &max);
+    void setDate(QDate date);
+    void setDateRange(QDate min, QDate max);
     void setFirstDayOfWeek(Qt::DayOfWeek dow) { verifyCalendarInstance()->setFirstDayOfWeek(dow); }
     QCalendarWidget *calendarWidget() const { return const_cast<QCalendarPopup*>(this)->verifyCalendarInstance(); }
     void setCalendarWidget(QCalendarWidget *cw);
 Q_SIGNALS:
-    void activated(const QDate &date);
-    void newDateSelected(const QDate &newDate);
-    void hidingCalendar(const QDate &oldDate);
+    void activated(QDate date);
+    void newDateSelected(QDate newDate);
+    void hidingCalendar(QDate oldDate);
     void resetButton();
 
 private Q_SLOTS:
-    void dateSelected(const QDate &date);
+    void dateSelected(QDate date);
     void dateSelectionChanged();
 
 protected: