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MFC里面有个CTime类,你可以拿来直接用
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#include time.h
#include assert.h
#include stdio.h
class CTimeSpan
{
public:
CTimeSpan() throw();
CTimeSpan( __time64_t time ) throw();
CTimeSpan( long lDays, int nHours, int nMins, int nSecs ) throw();
__int64 GetDays() const throw();
__int64 GetTotalHours() const throw();
long GetHours() const throw();
__int64 GetTotalMinutes() const throw();
long GetMinutes() const throw();
__int64 GetTotalSeconds() const throw();
long GetSeconds() const throw();
__time64_t GetTimeSpan() const throw();
CTimeSpan operator+( CTimeSpan span ) const throw();
CTimeSpan operator-( CTimeSpan span ) const throw();
CTimeSpan operator+=( CTimeSpan span ) throw();
CTimeSpan operator-=( CTimeSpan span ) throw();
bool operator==( CTimeSpan span ) const throw();
bool operator!=( CTimeSpan span ) const throw();
bool operator( CTimeSpan span ) const throw();
bool operator( CTimeSpan span ) const throw();
bool operator=( CTimeSpan span ) const throw();
bool operator=( CTimeSpan span ) const throw();
private:
__time64_t m_timeSpan;
};
inline CTimeSpan::CTimeSpan() throw() :
m_timeSpan(0)
{
}
inline CTimeSpan::CTimeSpan( __time64_t time ) throw() :
m_timeSpan( time )
{
}
inline CTimeSpan::CTimeSpan(long lDays, int nHours, int nMins, int nSecs) throw()
{
m_timeSpan = nSecs + 60* (nMins + 60* (nHours + __int64(24) * lDays));
}
inline __int64 CTimeSpan::GetDays() const throw()
{
return( m_timeSpan/(24*3600) );
}
inline __int64 CTimeSpan::GetTotalHours() const throw()
{
return( m_timeSpan/3600 );
}
inline long CTimeSpan::GetHours() const throw()
{
return( long( GetTotalHours()-(GetDays()*24) ) );
}
inline __int64 CTimeSpan::GetTotalMinutes() const throw()
{
return( m_timeSpan/60 );
}
inline long CTimeSpan::GetMinutes() const throw()
{
return( long( GetTotalMinutes()-(GetTotalHours()*60) ) );
}
inline __int64 CTimeSpan::GetTotalSeconds() const throw()
{
return( m_timeSpan );
}
inline long CTimeSpan::GetSeconds() const throw()
{
return( long( GetTotalSeconds()-(GetTotalMinutes()*60) ) );
}
inline __time64_t CTimeSpan::GetTimeSpan() const throw()
{
return( m_timeSpan );
}
inline CTimeSpan CTimeSpan::operator+( CTimeSpan span ) const throw()
{
return( CTimeSpan( m_timeSpan+span.m_timeSpan ) );
}
inline CTimeSpan CTimeSpan::operator-( CTimeSpan span ) const throw()
{
return( CTimeSpan( m_timeSpan-span.m_timeSpan ) );
}
inline CTimeSpan CTimeSpan::operator+=( CTimeSpan span ) throw()
{
m_timeSpan += span.m_timeSpan;
return( *this );
}
inline CTimeSpan CTimeSpan::operator-=( CTimeSpan span ) throw()
{
m_timeSpan -= span.m_timeSpan;
return( *this );
}
inline bool CTimeSpan::operator==( CTimeSpan span ) const throw()
{
return( m_timeSpan == span.m_timeSpan );
}
inline bool CTimeSpan::operator!=( CTimeSpan span ) const throw()
{
return( m_timeSpan != span.m_timeSpan );
}
inline bool CTimeSpan::operator( CTimeSpan span ) const throw()
{
return( m_timeSpan span.m_timeSpan );
}
inline bool CTimeSpan::operator( CTimeSpan span ) const throw()
{
return( m_timeSpan span.m_timeSpan );
}
inline bool CTimeSpan::operator=( CTimeSpan span ) const throw()
{
return( m_timeSpan = span.m_timeSpan );
}
inline bool CTimeSpan::operator=( CTimeSpan span ) const throw()
{
return( m_timeSpan = span.m_timeSpan );
}
class CTime
{
public:
static CTime __stdcall GetCurrentTime() throw();
CTime() throw();
CTime( __time64_t time ) throw();
CTime( int nYear, int nMonth, int nDay, int nHour, int nMin, int nSec,
int nDST = -1 );
CTime( unsigned short wDosDate, unsigned short wDosTime, int nDST = -1 );
CTime operator=( __time64_t time ) throw();
CTime operator+=( CTimeSpan span ) throw();
CTime operator-=( CTimeSpan span ) throw();
CTimeSpan operator-( CTime time ) const throw();
CTime operator-( CTimeSpan span ) const throw();
CTime operator+( CTimeSpan span ) const throw();
bool operator==( CTime time ) const throw();
bool operator!=( CTime time ) const throw();
bool operator( CTime time ) const throw();
bool operator( CTime time ) const throw();
bool operator=( CTime time ) const throw();
bool operator=( CTime time ) const throw();
struct tm* GetGmtTm( struct tm* ptm ) const;
struct tm* GetLocalTm( struct tm* ptm ) const;
__time64_t GetTime() const throw();
int GetYear() const throw();
int GetMonth() const throw();
int GetDay() const throw();
int GetHour() const throw();
int GetMinute() const throw();
int GetSecond() const throw();
int GetDayOfWeek() const throw();
private:
__time64_t m_time;
};
inline CTime __stdcall CTime::GetCurrentTime() throw()
{
return( CTime( ::_time64( NULL ) ) );
}
inline CTime::CTime() throw() :
m_time(0)
{
}
inline CTime::CTime( __time64_t time ) throw():
m_time( time )
{
}
inline CTime::CTime(int nYear, int nMonth, int nDay, int nHour, int nMin, int nSec,
int nDST)
{
#pragma warning (push)
#pragma warning (disable: 4127) // conditional expression constant
assert( nYear = 1900 );
assert( nMonth = 1 nMonth = 12 );
assert( nDay = 1 nDay = 31 );
assert( nHour = 0 nHour = 23 );
assert( nMin = 0 nMin = 59 );
assert( nSec = 0 nSec = 59 );
#pragma warning (pop)
struct tm atm;
atm.tm_sec = nSec;
atm.tm_min = nMin;
atm.tm_hour = nHour;
atm.tm_mday = nDay;
atm.tm_mon = nMonth - 1; // tm_mon is 0 based
atm.tm_year = nYear - 1900; // tm_year is 1900 based
atm.tm_isdst = nDST;
m_time = _mktime64(atm);
assert(m_time != -1); // indicates an illegal input time
}
inline CTime::CTime(unsigned short wDosDate, unsigned short wDosTime, int nDST)
{
struct tm atm;
atm.tm_sec = (wDosTime ~0xFFE0) 1;
atm.tm_min = (wDosTime ~0xF800) 5;
atm.tm_hour = wDosTime 11;
atm.tm_mday = wDosDate ~0xFFE0;
atm.tm_mon = ((wDosDate ~0xFE00) 5) - 1;
atm.tm_year = (wDosDate 9) + 80;
atm.tm_isdst = nDST;
m_time = _mktime64(atm);
assert(m_time != -1); // indicates an illegal input time
}
inline CTime CTime::operator=( __time64_t time ) throw()
{
m_time = time;
return( *this );
}
inline CTime CTime::operator+=( CTimeSpan span ) throw()
{
m_time += span.GetTimeSpan();
return( *this );
}
inline CTime CTime::operator-=( CTimeSpan span ) throw()
{
m_time -= span.GetTimeSpan();
return( *this );
}
inline CTimeSpan CTime::operator-( CTime time ) const throw()
{
return( CTimeSpan( m_time-time.m_time ) );
}
inline CTime CTime::operator-( CTimeSpan span ) const throw()
{
return( CTime( m_time-span.GetTimeSpan() ) );
}
inline CTime CTime::operator+( CTimeSpan span ) const throw()
{
return( CTime( m_time+span.GetTimeSpan() ) );
}
inline bool CTime::operator==( CTime time ) const throw()
{
return( m_time == time.m_time );
}
inline bool CTime::operator!=( CTime time ) const throw()
{
return( m_time != time.m_time );
}
inline bool CTime::operator( CTime time ) const throw()
{
return( m_time time.m_time );
}
inline bool CTime::operator( CTime time ) const throw()
{
return( m_time time.m_time );
}
inline bool CTime::operator=( CTime time ) const throw()
{
return( m_time = time.m_time );
}
inline bool CTime::operator=( CTime time ) const throw()
{
return( m_time = time.m_time );
}
inline struct tm* CTime::GetGmtTm(struct tm* ptm) const
{
// Ensure ptm is valid
assert( ptm != NULL );
if (ptm != NULL)
{
struct tm ptmTemp;
errno_t err = _gmtime64_s(ptmTemp, m_time);
// Be sure the call succeeded
if(err != 0) { return NULL; }
*ptm = ptmTemp;
return ptm;
}
return NULL;
}
inline struct tm* CTime::GetLocalTm(struct tm* ptm) const
{
// Ensure ptm is valid
assert( ptm != NULL );
if (ptm != NULL)
{
struct tm ptmTemp;
errno_t err = _localtime64_s(ptmTemp, m_time);
if (err != 0)
{
return NULL; // indicates that m_time was not initialized!
}
*ptm = ptmTemp;
return ptm;
}
return NULL;
}
inline __time64_t CTime::GetTime() const throw()
{
return( m_time );
}
inline int CTime::GetYear() const
{
struct tm ttm;
struct tm * ptm;
ptm = GetLocalTm(ttm);
return ptm ? (ptm-tm_year) + 1900 : 0 ;
}
inline int CTime::GetMonth() const
{
struct tm ttm;
struct tm * ptm;
ptm = GetLocalTm(ttm);
return ptm ? ptm-tm_mon + 1 : 0;
}
inline int CTime::GetDay() const
{
struct tm ttm;
struct tm * ptm;
ptm = GetLocalTm(ttm);
return ptm ? ptm-tm_mday : 0 ;
}
inline int CTime::GetHour() const
{
struct tm ttm;
struct tm * ptm;
ptm = GetLocalTm(ttm);
return ptm ? ptm-tm_hour : -1 ;
}
inline int CTime::GetMinute() const
{
struct tm ttm;
struct tm * ptm;
ptm = GetLocalTm(ttm);
return ptm ? ptm-tm_min : -1 ;
}
inline int CTime::GetSecond() const
{
struct tm ttm;
struct tm * ptm;
ptm = GetLocalTm(ttm);
return ptm ? ptm-tm_sec : -1 ;
}
inline int CTime::GetDayOfWeek() const
{
struct tm ttm;
struct tm * ptm;
ptm = GetLocalTm(ttm);
return ptm ? ptm-tm_wday + 1 : 0 ;
}
void date()
{
CTime together = CTime(2013, 6, 22, 12, 30, 30);
CTime now = CTime::GetCurrentTime();
CTimeSpan left=now-together;
printf("%ld天",left.GetDays());
printf("%02ld时",left.GetHours());
printf("%02ld分",left.GetMinutes());
printf("%02ld秒",left.GetSeconds());
}
void main()
{
date();
}
包含api的.h文件,然后直接调用就可以了,比如winsock.h,可以调用recv等函数,也可以在函数前面加::
答案补充
HWND hWnd = ::FindWindow(sClassName, sWindowName);//传入类明到sClassName,窗口名sWindowName,否则传入NULL
你可以这样,把你的C++代码做成COM组件,然后在asp就可以调用了. 在asp里实现的一些特殊功能一般都是通过COM来实现的
个人感觉:不可能。。你的想法也太夸张了,javascript 是用于网页上的,我还听说C可以。。。
我自己建了个java类名叫account在calculator.bean包中,通过import="calculator.bean.account"引入JSP页面了,怎样在JavaScript中调用account里的方法jisuan()?
用var a=new account然后a.jisuan()貌似不行啊?
静待高手指教,越简单越好!