skip mouse events we're not interested in (e.g. mouse wheel ones) (closes #10062)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@58400 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/splitter.cpp

@@ -211,8 +211,11 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
     int x = (int)event.GetX(),
         y = (int)event.GetY();
 
-    if (GetWindowStyle() & wxSP_NOSASH)
+    if ( GetWindowStyle() & wxSP_NOSASH )
+    {
+        event.Skip();
         return;
+    }
 
     // with wxSP_LIVE_UPDATE style the splitter windows are always resized
     // following the mouse movement while it drags the sash, without it we only
@@ -394,6 +397,10 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
     {
         OnDoubleClickSash(x, y);
     }
+    else
+    {
+        event.Skip();
+    }
 }
 
 void wxSplitterWindow::OnSize(wxSizeEvent& event)