[VFP]CLASSE SYSTEMTIME

m.lcSt=CREATEOBJECT("SystemTime")
m.lcSt.GetUTC()
m.tUTC = m.lcSt.DateTime()
m.lcSt.GetLocal()
m.tLocal = m.lcSt.DateTime()
? m.tLocal-m.tUtc, "secondes d'écart entre UTC et Local"
? (m.tLocal-m.tUtc)/60, "minutes"
? (m.tLocal-m.tUtc)/3600, "heures"

DEFINE CLASS SystemTime as custom
	* SYSTEMTIME est composé de 8 WORD (soient 16 octets)
	#define SizeOfSystemTime 8*2

 	cYear=SPACE(2)
 	cMonth=SPACE(2)
 	cDayOfWeek=SPACE(2)
 	cDay=SPACE(2)
 	cHour=SPACE(2)
 	cMinute=SPACE(2)
 	cSecond=SPACE(2)
 	cMilliSec=SPACE(2)
	
	nYear=0
	nMonth=0
	nDayOfWeek=0
	nDay=0
	nHour=0
	nMinute=0
	nSecond=0
	nMilliSec=0
	
	tLocalDateTime=DATETIME()
	tUTCDateTime=DATETIME()

	FUNCTION Init
	ENDFUNC
	
	FUNCTION cYear_assign
	LPARAMETERS lcNewVal
	this.cYear=lcNewVal
	this.nYear=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION cMonth_assign
	LPARAMETERS lcNewVal
	this.cMonth=lcNewVal
	this.nMonth=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION cDayOfWeek_assign
	LPARAMETERS lcNewVal
	this.cDayOfWeek=lcNewVal
	this.nDayOfWeek=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION cDay_assign
	LPARAMETERS lcNewVal
	this.cDay=lcNewVal
	this.nDay=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION cHour_assign
	LPARAMETERS lcNewVal
	this.cHour=lcNewVal
	this.nHour=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION cMinute_assign
	LPARAMETERS lcNewVal
	this.cDayOfWeek=lcNewVal
	this.nDayOfWeek=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION cSecond_assign
	LPARAMETERS lcNewVal
	this.cSecond=lcNewVal
	this.nSecond=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION cMilliSec_assign
	LPARAMETERS lcNewVal
	this.cMilliSec=lcNewVal
	this.nMilliSec=this.strToWord(lcNewVal)
	ENDFUNC
	
	FUNCTION strToWord
	LPARAMETERS lcVal
	return	ASC(LEFT(lcVal,1))+256*ASC(RIGHT(lcVal,1))
	ENDFUNC
		
	FUNCTION Destroy
		CLEAR DLLS "GetLocalTime","GetSystemTime"
	ENDFUNC

	PROCEDURE GetUTC
		LOCAL lcBuff
		lcBuff=REPLICATE(CHR(32), SizeOfSystemTime)
		DECLARE GetSystemTime IN WIN32API String@ pST
		GetSystemTime(@lcbuff)
		this.cYear=SUBSTR(lcBuff,1,2)
		this.cMonth=SUBSTR(lcBuff,3,2)
		this.cDayOfWeek=SUBSTR(lcBuff,5,2)
		this.cDay=SUBSTR(lcBuff,7,2)
		this.cHour=SUBSTR(lcBuff,9,2)
		this.cMinute=SUBSTR(lcBuff,11,2)
		this.cSecond=SUBSTR(lcBuff,13,2)
		this.cMilliSec=SUBSTR(lcBuff,15,2)
	ENDPROC
	
	PROCEDURE GetLocal
		LOCAL lcBuff
		DECLARE GetLocalTime IN WIN32API String@ pST
		lcBuff=REPLICATE(CHR(32), SizeOfSystemTime)
		GetLocalTime(@lcbuff)
		this.cYear=SUBSTR(lcBuff,1,2)
		this.cMonth=SUBSTR(lcBuff,3,2)
		this.cDayOfWeek=SUBSTR(lcBuff,5,2)
		this.cDay=SUBSTR(lcBuff,7,2)
		this.cHour=SUBSTR(lcBuff,9,2)
		this.cMinute=SUBSTR(lcBuff,11,2)
		this.cSecond=SUBSTR(lcBuff,13,2)
		this.cMilliSec=SUBSTR(lcBuff,15,2)
	ENDPROC

	FUNCTION DateTime
		WITH this
			RETURN DATETIME(.nYear, .nMonth, .nDay, .nHour, .nMinute, .nSecond)
		ENDWITH
	ENDFUNC

ENDDEFINE