dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
	} else if (strncasecmp(value, "DTRDSR", vlen) == 0) {
	    dcb.fOutxDsrFlow = TRUE;
	    dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
	} else {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad value \"%s\" for -handshake: should be one of"
			" xonxoff, rtscts, dtrdsr or none", value));
		Tcl_SetErrorCode(interp, "TCL", "VALUE", "HANDSHAKE", NULL);
	    }
	    return TCL_ERROR;
	}

	if (!SetCommState(infoPtr->handle, &dcb)) {

		    }
		    result = TCL_ERROR;
		    break;
		}
	    } else {
		if (interp != NULL) {
		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			    "bad signal name \"%s\" for -ttycontrol: should be"
			    " DTR, RTS or BREAK", argv[i]));
		    Tcl_SetErrorCode(interp, "TCL", "VALUE", "TTY_SIGNAL",
			    NULL);
		}
		result = TCL_ERROR;
		break;
	    }