C++ Date formats

[Stevo Z]

Hi, I'm working under VS 6 C++ and need to parse date from YYYY-MM-DD HH:MM:SS to any of SYSTEMTIME or tm structures. I'm struggling to use CTime, because it requires to run under MFC(does it? :) ) and I'm creating a COM object. Or is there a way to use CTime while creating COM ? PS : I'm not having problems with parsing "YYYY-MM-DD HH:MM-SS" formated string into Int values and filling them into e.c. SYSTEMTIME structure, but I don't know how to compare two dates created that way. When I try to create FILETIME from SYSTEMTIME (to be able to compere them) using SystemTimeToFileTime(...) method, it doesn't work corretly. I suppose it's beacuse of the source SYSTEMTIME doesn't have all fields set (Day of Week and MILISECONDS - which are for me irrelevant, I can set miliseconds to zero but I don't know how to determine day of week) thanx for any ideas

[Johpoke]

I dont know exactly what your problem is, but maybe this will help SYSTEMTIME ST; GetLocalTime(&ST); CString TimeStamp; TimeStamp.Format("%ld-%ld-%ld%ld:%ld",ST.wYear,ST.wMonth,ST.wDay,ST.wHour,ST.wMinute); Note that you might have to make a simple function which adds a 0 infront of some of the variables for it to look nicer :)

//Johannes

[Lane Yu]

You can use CRT function mktime() to make a time_t, and then you can do everything you want. Take a look at CTime's source. (c:\Program Files\Microsoft Visual Studio\VC98\MFC\SRC\TIMECORE.CPP ) :)

[Nibu babu thomas]

Zilo(svk) wrote:

I'm struggling to use CTime, because it requires to run under MFC(does it? )

You can also use ... _tcsftime

---

Nibu thomas A Developer Code must be written to be read, not by the compiler, but by another human being. http:\\nibuthomas.wordpress.com

[Stevo Z]

Thanx guys

[Niklas L]

...or just use strcmp() if you just need to compare times. It will work on the format you supplied, and it's faster than any conversion you can make. If you're about to make alot of comparisons (like sorting) converting it to a number might be the way to go.

home