1 files changed, 1 insertions, 0 deletions

diff --git a/linden/indra/llwindow/llmousehandler.h b/linden/indra/llwindow/llmousehandler.h
index 7bd0f2e..1a4ea65 100644
--- a/linden/indra/llwindow/llmousehandler.h
+++ b/linden/indra/llwindow/llmousehandler.h
@@ -67,6 +67,7 @@ public:
 
         virtual BOOL    handleHover(S32 x, S32 y, MASK mask) = 0;
         virtual BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks) = 0;
+        virtual BOOL    handleHScrollWheel(S32 x, S32 y, S32 clicks);
         virtual BOOL    handleToolTip(S32 x, S32 y, std::string& msg, LLRect* sticky_rect_screen) = 0;
         virtual EShowToolTip getShowToolTip() { return SHOW_IF_NOT_BLOCKED; };
         virtual const std::string& getName() const = 0;