rbtk_EventCheckProc 2589 ext/tk/tcltklib.c     Tcl_CreateEventSource(rbtk_EventSetupProc, rbtk_EventCheckProc, (ClientData)args);
rbtk_EventCheckProc 2643 ext/tk/tcltklib.c     Tcl_DeleteEventSource(rbtk_EventSetupProc, rbtk_EventCheckProc, (ClientData)args);