Displaying time for different time zones

[dennisV]

Hello all, Could someone please direct me to where I can get information (or better yet, sample code) on how to apply different time zones to system time (without changing the actual system time, of course). :confused: I've looked at MSDN, but found nothing useful. I also didn't find any way to obtain the list of time zones along with countries/cities that Windows itself uses for regional settings. Any help greatly appreciated, Thank you in advance, MCP, MCSD

[David Chamberlain]

I had to do something similar at one time with software on an aircraft that could traverse multiple time zones, although limited to those in the US. Since the computer itself had only one time zone within which it lived, we always knew the time within its own zone. This can be found with a CTime object and the member function GetCurrentTime(). This CTime object can be formatted with the member function Format(), and the time zone can be parsed out, if needed. Based on that known time zone, I made a drop-down list of US time zones by name that converted into hour offsets from the computer's zone. If they wanted local time to be referenced in Eastern Time, which they selected from the drop-down list, then this converted to adding 2 hours to the computer time before displaying. It was fairly cheap and easy, but it did the job. Good luck, Dave "You can say that again." -- Dept. of Redundancy Dept.

[dennisV]

Yes, I understand that approach, but what I need is to go International :omg: That's the problem - if I choose to implement it this way, then where can I get a list of all major countries/cities with their times zones? Or is there another approach? Anyway, thank you for replying, MCP, MCSD

[David Chamberlain]

Sorry, without knowing any details, I couldn't give you EXACTLY what you wanted. Is there any way you could let the users select an offset from GMT, rather than by selecting a city? If so, then you know your difference from GMT and could add their difference and come up with local time for them (?). If not, I guess it would be nice to have a scrolling world map that they could select their area, similar to setting the clocks on the PC. I'm surprised there isn't one of those available as an ActiveX control. Dave "You can say that again." -- Dept. of Redundancy Dept.

[dennisV]

David Chamberlain wrote: Is there any way you could let the users select an offset from GMT, rather than by selecting a city? :rolleyes: That would be too easy... Unfortunately, for most of my users, this will be too hard of a task - it's not a major part of my program, just a small nice addition I want to bring in. Besides, most people won't really know what time zone they're in, and even if they do know about their own time zone, they probably won't know about another zone of the world (for example to watch time in New York, Sydney and Kuwait). David Chamberlain wrote: scrolling world map that they could select their area I've searched around, but didn't find such a control... That would be really nice though. Thank you for replying, MCP, MCSD