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    <p>You can use <code>boost::posix_time::time_duration</code> to get the time range. E.g like this</p> <pre><code>boost::posix_time::time_duration diff = tick - now; diff.total_milliseconds(); </code></pre> <p>And to get a higher resolution you can change the clock you are using. For example to the <code>boost::posix_time::microsec_clock</code>, though this can be OS dependent. On Windows, for example, <code>boost::posix_time::microsecond_clock</code> has milisecond resolution, not microsecond.</p> <p>An example which is a little dependent on the hardware.</p> <pre><code>int main(int argc, char* argv[]) { boost::posix_time::ptime t1 = boost::posix_time::second_clock::local_time(); boost::this_thread::sleep(boost::posix_time::millisec(500)); boost::posix_time::ptime t2 = boost::posix_time::second_clock::local_time(); boost::posix_time::time_duration diff = t2 - t1; std::cout &lt;&lt; diff.total_milliseconds() &lt;&lt; std::endl; boost::posix_time::ptime mst1 = boost::posix_time::microsec_clock::local_time(); boost::this_thread::sleep(boost::posix_time::millisec(500)); boost::posix_time::ptime mst2 = boost::posix_time::microsec_clock::local_time(); boost::posix_time::time_duration msdiff = mst2 - mst1; std::cout &lt;&lt; msdiff.total_milliseconds() &lt;&lt; std::endl; return 0; } </code></pre> <p>On my win7 machine. The first out is either 0 or 1000. Second resolution. The second one is nearly always 500, because of the higher resolution of the clock. I hope that help a little.</p>
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    1. POGet current time in milliseconds using C++ and Boost
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    1. USRenan Gemignani
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    1. POGet current time in milliseconds using C++ and Boost
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    1. COthanks, but if for example, i need to send the now in milliseconds, how can I do this?
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      1. USghiboz
    2. COI think you could do with some `using` statements
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      1. USLightness Races in Orbit
    3. CO@ghiboz: [boost::chrono::high_resolution_clock](http://www.boost.org/doc/libs/1_47_0/doc/html/chrono/reference.html#chrono.reference.cpp0x.system_clocks_hpp.high_resolution_clock)
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