$PBExportHeader$f_check_billdate.srf
global type f_check_billdate from function_object
end type

forward prototypes
global function integer f_check_billdate (datetime arg_billdate)
global function integer f_check_billdate (datetime arg_billdate, ref string arg_msg)
end prototypes

global function integer f_check_billdate (datetime arg_billdate);int rslt = 1

return rslt
end function

global function integer f_check_billdate (datetime arg_billdate, ref string arg_msg);Int rslt = 1
Long li_cmonth,cnt

IF Not sys_accsetbegin THEN
	rslt = 1
	GOTO ext
END IF

SELECT count(*) Into :cnt From cw_calendar;
IF sqlca.SQLCode <> 0 THEN
	arg_msg = '查询会计日历失败,原因:'+sqlca.SQLErrText
	rslt = 0
	GOTO ext
END IF

IF cnt = 0 THEN
	rslt = 1
	GOTO ext
END IF

SELECT cmonth Into :li_cmonth From cw_calendar Where sdate <= :arg_billdate And dateadd(d, 1, edate) > :arg_billdate;
IF sqlca.SQLCode <> 0 THEN
	arg_msg = '非法日期,不在本年会计期间范围内,请检查'
	rslt = 0
	GOTO ext
END IF

IF li_cmonth < sys_curyearmon THEN
	arg_msg = '日期所属会计期间会计已经结帐,不能在本期间内增加单据'
	rslt = 0
	GOTO ext
END IF

ext:
RETURN rslt






end function