1 files changed, 7 insertions, 2 deletions
diff --git a/src/plugins/platforms/windows/qwindowsmousehandler.cpp b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
index c6cfa4dbbc..43286eadf3 100644
--- a/src/plugins/platforms/windows/qwindowsmousehandler.cpp
+++ b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
@@ -157,14 +157,19 @@ bool QWindowsMouseHandler::translateMouseEvent(QWindow *window, HWND hwnd,
                                                QtWindows::WindowsEventType et,
                                                MSG msg, LRESULT *result)
 {
-    enum { signatureMask = 0xffffff00, miWpSignature = 0xff515700 };
+#ifdef Q_COMPILER_CLASS_ENUM
+    enum : quint64 { signatureMask = 0xffffff00, miWpSignature = 0xff515700 };
+#else
+    static const quint64 signatureMask = 0xffffff00;
+    static const quint64 miWpSignature = 0xff515700;
+#endif // !Q_COMPILER_CLASS_ENUM
 
     if (et == QtWindows::MouseWheelEvent)
         return translateMouseWheelEvent(window, hwnd, msg, result);
 
 #ifndef Q_OS_WINCE
     // Check for events synthesized from touch. Lower byte is touch index, 0 means pen.
-    const LPARAM extraInfo = GetMessageExtraInfo();
+    const quint64 extraInfo = GetMessageExtraInfo();
     const bool fromTouch = (extraInfo & signatureMask) == miWpSignature && (extraInfo & 0xff);
     if (fromTouch)
         return false;