adapting to new x wheel behavior, see #15269

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74488 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/generic/scrlwing.cpp b/src/generic/scrlwing.cpp
index 921c5961cae60beff416ab6d410b276c5a23c80c..2135db54f4c3b72feeb380cc1919b342063b6eaf 100644 (file)
--- a/src/generic/scrlwing.cpp
+++ b/src/generic/scrlwing.cpp
@@ -1018,6 +1018,9 @@ void wxScrollHelperBase::HandleOnMouseWheel(wxMouseEvent& event)
         newEvent.SetOrientation( event.GetWheelAxis() == 0 ? wxVERTICAL : wxHORIZONTAL);
         newEvent.SetEventObject(m_win);
 
+        if ( event.GetWheelAxis() == wxMOUSE_WHEEL_HORIZONTAL )
+            lines = -lines;
+
         if (event.IsPageScroll())
         {
             if (lines > 0)