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<html><!-- #BeginTemplate "/Templates/tmpl.dwt" --><head><!-- #BeginEditable "doctitle" --> <title>PTypes: date/time: time</title><!-- #EndEditable --> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><link rel="stylesheet" href="styles.css"></head><body bgcolor="#FFFFFF" leftmargin="40" marginwidth="40"><p><a href="../index.html"><img src="title-1.7.gif" width="213" height="34" alt="C++ Portable Types Library (PTypes) Version 1.7" border="0"></a> <hr noshade><!-- #BeginEditable "body" --> <p class="hpath"><a href="index.html">Top</a>: <a href="basic.html">Basic types</a>: <a href="time.html">Date/time</a>: Time manipulation</p><blockquote> <pre class="lang">#include <ptime.h>typedef large datetime;bool istimevalid(int hour, int min, int sec, int msec = 0);datetime encodetime(int hour, int min, int sec, int msec = 0);bool decodetime(datetime d, int& hour, int& min, int& sec [, int& msec] );</pre></blockquote><p><span class="def">bool istimevalid(int hour, int min, int sec, int msec = 0)</span> checks whether <span class="lang">hour</span>, <span class="lang">min</span>, <span class="lang">sec</span> and <span class="lang">msec</span> (millisecond) contain correct values in their respective ranges. The last parameter is optional.</p><p><span class="def">datetime encodetime(int hour, int min, int sec, int msec = 0)</span> returns a <span class="lang">datetime</span> value, i.e. the number of milliseconds since midnight. This function does NOT check the input parameters for validity. The value returned by this function can be added to the return value of <span class="lang">encodedate()</span> to form the exact time stamp for the given year, month, day, hour, minute, second and (optionally) millisecond.</p><p><span class="def">bool decodetime(datetime d, int& hour, int& min, int& sec [, int& msec] )</span> splits the value of <span class="lang">d</span> into <span class="lang">hour</span>, <span class="lang">minute</span>, <span class="lang">sec</span> and <span class="lang">msec</span> (millisecond) passed since midnight. The last parameter is optional.</p><p class="seealso">See also: <a href="time.datetime.html">Datetime type</a>, <a href="time.calendar.html">Date/calendar manipulation</a></p><!-- #EndEditable --><hr size="1"><a href="../index.html" class="ns">PTypes home</a></body><!-- #EndTemplate --></html>?? 快捷鍵說明
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