CFAbsoluteTimeAddGregorianUnits

日付を増減して返します

CFAbsoluteTime  CFAbsoluteTimeAddGregorianUnits ( 
                 CFAbsoluteTime   at , 
                 CFTimeZoneRef   tz , 
                 CFGregorianUnits   units );

解説

日付を増減して返します。

返り値

引数

( CFAbsoluteTime )at

( CFTimeZoneRef )tz

( CFGregorianUnits )units

フレームワーク

CoreFoundation

クラス

CFDate

Function

使用可能

10.0

参照

例文

#include <CoreFoundation/CoreFoundation.h>
static const CFGregorianUnits kGregorianUnits_Plus24Hours = {0, 0, 0, 24, 0, 0.0};
static const CFGregorianUnits kGregorianUnits_Minus24Hours = {0, 0, 0, -24, 0, 0.0};

int main (int argc, const char * argv[]) {
	 CFTimeZoneRef zone = CFTimeZoneCreateWithTimeIntervalFromGMT(NULL, 0.0);
	
	CFAbsoluteTime timeNow = CFAbsoluteTimeGetCurrent();
	CFAbsoluteTime timeNow2 =CFAbsoluteTimeAddGregorianUnits(timeNow,zone,kGregorianUnits_Plus24Hours);
	
	CFGregorianDate current = CFAbsoluteTimeGetGregorianDate( timeNow2, NULL );
	
	double dsecs = floor(current.second);
	unsigned int second = (unsigned int)dsecs;
	
	double milliseconds = (current.second - dsecs) * 1000.0;
			
   	CFStringRef theString = CFStringCreateWithFormat (kCFAllocatorDefault,NULL,CFSTR("%@ %d.%d.%d %d:%d:%d.%u\n"), 
								CFSTR("It's"),current.year, current.month, current.day,
								current.hour, current.minute, second, (unsigned int)milliseconds);
	CFShow(theString);

	
    return 0;
}