+/* -- PRIVATE FUNCTION DECLARATIONS ---------------------------------------- */
+/* Spaceball device functions, defined in fg_spaceball_mswin.c */
+//Added by Jinrong Xie <stonexjr at gmail.com> 12/24/2014
+int fgIsSpaceballWinEvent(HWND hwnd, WPARAM wParam, LPARAM lParam);
+void fgSpaceballHandleWinEvent(HWND hwnd, WPARAM wParam, LPARAM lParam);
+