没啥技术含量，只不过是在没事干，就把这个也记上，Windows下好像有这个api函数，但是在wince下用不了，所以还得自己封装一个。大体代码如下：
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/*the seconds of round year = 3600*24*366 */
#define SECONDOFROUNDYEAR 31622400
/*the seconds of general year = 3600*24*365 */
#define SECONDOFYEAR 31536000
unsigned
int
SecondsFrom1970()
{
SYSTEMTIME st;
unsigned
int
tTemp=0;
unsigned
int
tSecond=0;
int
month_s[2][12]={{31,28,31,30,31,30,31,31,30,31,30,31},
{31,29,31,30,31,30,31,31,30,31,30,31}};
int
nDays=0;
int
nCount=0;
int
i;
int
j;
GetLocalTime(&st);
tSecond=st.wHour*3600+st.wMinute*60+st.wSecond;
for
(i=1970;i<st.wYear;++i)
{
if
(IsRound(i))
++nCount;
}
tTemp+=(st.wYear-1970-nCount)*SECONDOFYEAR+nCount*SECONDOFROUNDYEAR;
if
(st.wMonth>1)
{
if
(IsRound(st.wYear))
{
for
(j=0;j<st.wMonth-1;++j)
{
tTemp+=month_s[1][j]*MAXSECONDOFDAY;
}
tTemp+=(st.wDay-1)*MAXSECONDOFDAY+tSecond;
}
else
{
for
(j=0;j<st.wMonth-1;++j)
{
tTemp+=month_s[0][j]*MAXSECONDOFDAY;
}
tTemp+=(st.wDay-1)*MAXSECONDOFDAY+tSecond;
}
}
else
{
tTemp+=(st.wDay-1)*MAXSECONDOFDAY+tSecond;
}
return
tTemp;
}
bool
IsRound(
int
year)
{
/*is round year?*/
if
((year%100)&&(year%4==0))
return
1;
if
((year%100==0)&&(year%400==0))
return
1;
return
0;
}
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