diff --git a/win/vncviewer/DesktopWindow.h b/win/vncviewer/DesktopWindow.h
index 3d2211f..8511eb4 100644
--- a/win/vncviewer/DesktopWindow.h
+++ b/win/vncviewer/DesktopWindow.h
@@ -132,6 +132,8 @@
         virtual void refreshMenu(bool enableSysItems) = 0;
       };
 
+      Callback *getCallback() const { return callback; }
+
       // Currently accessible so that the CConn can releaseAllKeys & check
       // whether Ctrl and Alt are down...
       rfb::win32::CKeyboard kbd;