1 files changed, 18 insertions, 4 deletions
diff --git a/src/corelib/kernel/qbasictimer.h b/src/corelib/kernel/qbasictimer.h
index b39a78d293..ccc93f6e9b 100644
--- a/src/corelib/kernel/qbasictimer.h
+++ b/src/corelib/kernel/qbasictimer.h
@@ -7,6 +7,8 @@
 #include <QtCore/qglobal.h>
 #include <QtCore/qnamespace.h>
 
+#include <chrono>
+
 QT_BEGIN_NAMESPACE
 
 
@@ -31,16 +33,28 @@ public:
 
     bool isActive() const noexcept { return id != 0; }
     int timerId() const noexcept { return id; }
-#if QT_CORE_REMOVED_SINCE(6, 5)
+    QT_CORE_INLINE_SINCE(6, 5)
     void start(int msec, QObject *obj);
+    QT_CORE_INLINE_SINCE(6, 5)
     void start(int msec, Qt::TimerType timerType, QObject *obj);
-#endif
-    void start(qint64 msec, QObject *obj);
-    void start(qint64 msec, Qt::TimerType timerType, QObject *obj);
+    void start(std::chrono::milliseconds duration, QObject *obj);
+    void start(std::chrono::milliseconds duration, Qt::TimerType timerType, QObject *obj);
     void stop();
 };
 Q_DECLARE_TYPEINFO(QBasicTimer, Q_RELOCATABLE_TYPE);
 
+#if QT_CORE_INLINE_IMPL_SINCE(6, 5)
+void QBasicTimer::start(int msec, QObject *obj)
+{
+    start(std::chrono::milliseconds{msec}, obj);
+}
+
+void QBasicTimer::start(int msec, Qt::TimerType t, QObject *obj)
+{
+    start(std::chrono::milliseconds{msec}, t, obj);
+}
+#endif
+
 inline void swap(QBasicTimer &lhs, QBasicTimer &rhs) noexcept { lhs.swap(rhs); }
 
 QT_END_NAMESPACE