Adapt QCalendarWidget and QDateTimeEdit to support choice of calendar

[ChangeLog][QtWidgets][QCalendarWidget] Allow choice of calendar, with
Gregorian remaining the default.

[ChangeLog][QtWidgets][QDateTimeEdit] Allow choice of calendar, with
Gregorian remaining the default.

Change-Id: Ia11dd895032393543aee534b177324e643dcfb20
Done-with: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/widgets/widgets/qdatetimeedit.h b/src/widgets/widgets/qdatetimeedit.h
index b6fb35fc71..03994675ae 100644
--- a/src/widgets/widgets/qdatetimeedit.h
+++ b/src/widgets/widgets/qdatetimeedit.h
@@ -42,6 +42,7 @@
 
 #include <QtWidgets/qtwidgetsglobal.h>
 #include <QtCore/qdatetime.h>
+#include <QtCore/qcalendar.h>
 #include <QtCore/qvariant.h>
 #include <QtWidgets/qabstractspinbox.h>
 
@@ -102,6 +103,9 @@ public:
     QDate date() const;
     QTime time() const;
 
+    QCalendar calendar() const;
+    void setCalendar(QCalendar calendar);
+
     QDateTime minimumDateTime() const;
     void clearMinimumDateTime();
     void setMinimumDateTime(const QDateTime &dt);