blocks|key|2014386|text|GetTimeZoneInformation可能就是您要找的东西。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2014387|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms724421%2528v=vs.85%2529.aspx^0|0|M|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://msdn.microsoft.com/en-us/library/ms724421%28v=vs.85%29.aspx" rel="noreferrer">GetTimeZoneInformation</a> is probably what you're looking for.

blocks|key|2014448|text|GetDynamicTimeZoneInformation是更有用的函数。它还提供了时区的注册表项。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2014449|http://msdn.microsoft.com/en-us/library/windows/desktop/ms724318(v=vs.85).aspx|offset|length|2014450|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|26|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

GetDynamicTimeZoneInformation is more useful function. it gives the Registry Key for timezone also.. 

<a href="http://msdn.microsoft.com/en-us/library/windows/desktop/ms724318(v=vs.85).aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/windows/desktop/ms724318(v=vs.85).aspx</a>

blocks|key|3913816|text|即使不是同步到标准时间，而是同步到机器之间的时间，也应该使用NTP。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3913817|NTP是一个成熟的、健壮的协议，它已经解决了你将要发现或已经发现的所有问题:发现、通信传输、延迟和抖动、时区差异、管理漂移，这样你就不会混淆共享同一机器的其他进程，实际上设置正确的时间，权限等等。|3913818|只需在您想要作为主服务器的机器上设置NTP服务器，然后在另一台机器上设置NTP客户端，查询主服务器。简单而无痛。|3913819|自从我设置NTP服务器以来，已经有一段时间了；我假设您可以使用操作系统的标准NTP实用程序来完成这项工作，只需最少的配置，只要您拥有计算机上的管理员权限。|3913820|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Even if you're not synching to standard time, but to time between machines, you should use NTP.

NTP is a mature, robust protocol that has solved the whole stack of problems you're going to find, or have found already: discovery, comms transport, latency and jitter, timezone differences, managing drift so you don't confuse other processes sharing the same machine(s), actually setting the time correctly, permissions, etc.

Simply set up an NTP server on the machine you want as a master, and set up the NTP client on the other machine, querying the master. Simple and painless.

It's been a while since I set up NTP servers; I assume that you can use the NTP utilities that come standard with the operating systems to do the job with minimum configuration, as long as you have admin privileges on the boxes.

blocks|key|2014534|text|GetDynamicTimeZoneInformation并不总是有效的。最低支持的版本是Windows+Vista，Windows+Server2008和Windows+phone8。所以对于低于这个版本的版本，GetTimeZoneInformation更好。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2014535|然而，另一个问题是有时两者都返回StandardName或DaylightName为空。在这种情况下，您必须使用windows注册表。下面是gnu+cash中的函数，也是从glib修改而来的。|2014536|static+std::string
windows_default_tzname(void)
{
++++const+char+*subkey+=
++++++++"SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation";
++++constexpr+size_t+keysize{128};
++++HKEY+key;
++++char+key_name[keysize]{};
++++unsigned+long+tz_keysize+=+keysize;
++++if+(RegOpenKeyExA(HKEY_LOCAL_MACHINE,+subkey,+0,
++++++++++++++++++++++KEY_QUERY_VALUE,+&key)+==+ERROR_SUCCESS)
++++{
++++++++if+(RegQueryValueExA(key,+"TimeZoneKeyName",+nullptr,+nullptr,
+++++++++++++++++++++++++++++(LPBYTE)key_name,+&tz_keysize)+!=+ERROR_SUCCESS)
++++++++{
++++++++++++memset(key_name,+0,+tz_keysize);
++++++++}
++++++++RegCloseKey(key);
++++}
++++return+std::string(key_name);
}|code-block|syntax|javascript|2014537|entityMap^0|0|T|2Z|M|0|G|C|T|C|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|N|$]]

<code>GetDynamicTimeZoneInformation</code> doesn't always work. The minimum supported versions are Windows Vista, Windows Server 2008 and Windows Phone 8. So for anything below that <code>GetTimeZoneInformation</code> is better. 

However another issue is both sometimes return <code>StandardName</code> or <code>DaylightName</code> empty. In that case you have to use the windows registry. Here is the function taken from gnu cash which was also modified from glib.

<pre><code>static std::string
windows_default_tzname(void)
{
 const char *subkey =
 "SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation";
 constexpr size_t keysize{128};
 HKEY key;
 char key_name[keysize]{};
 unsigned long tz_keysize = keysize;
 if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, subkey, 0,
 KEY_QUERY_VALUE, &amp;key) == ERROR_SUCCESS)
 {
 if (RegQueryValueExA(key, "TimeZoneKeyName", nullptr, nullptr,
 (LPBYTE)key_name, &amp;tz_keysize) != ERROR_SUCCESS)
 {
 memset(key_name, 0, tz_keysize);
 }
 RegCloseKey(key);
 }
 return std::string(key_name);
}
</code></pre>

blocks|key|3628045|text|这就是我的工作和windows和linux之间的移植。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3628046|#include+"time.h"
...
time_t+now+=+time(NULL);
struct+tm+utctm;
utctm+=+*gmtime(&now);
utctm.tm_isdst+=+-1;
time_t+utctt+=+mktime(&utctm);
//+diff+is+the+offset+in+seconds
long+diff+=+now+-+utctt;|code-block|syntax|javascript|3628047|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is what works for me and ports between windows and linux
<pre><code>#include &quot;time.h&quot;
...
time_t now = time(NULL);
struct tm utctm;
utctm = *gmtime(&amp;now);
utctm.tm_isdst = -1;
time_t utctt = mktime(&amp;utctm);
// diff is the offset in seconds
long diff = now - utctt;
</code></pre>

I want to synchronize Windows and Linux clocks. Windows gets its system clock (with GetSystemTimeAsFileTime function) and sends it to Linux. Then, Linux sets its clock accordingly (with settimeofday function).

I also need to transmit the time zone of Windows, and convert it to Linux standard. How can I get the timezone of Windows in C++?

best wishes,
Mustafa

Getting timezone in Windows with C++

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想同步Windows和Linux时钟。Windows获取系统时钟(通过GetSystemTimeAsFileTime函数)并将其发送到Linux。然后，Linux相应地设置它的时钟(使用settimeofday函数)。我还需要传输Windows的时区，并将其转换为Linux标准。如何在C++中获取Windows的时区...

问使用C++在Windows中获取时区
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