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	<title>DelphiTips.net &#187; time</title>
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		<title>How to detect system time change</title>
		<link>http://www.delphitips.net/2009/01/07/how-to-detect-system-time-change/</link>
		<comments>http://www.delphitips.net/2009/01/07/how-to-detect-system-time-change/#comments</comments>
		<pubDate>Tue, 06 Jan 2009 23:01:19 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[System]]></category>
		<category><![CDATA[Windows]]></category>
		<category><![CDATA[change]]></category>
		<category><![CDATA[detect]]></category>
		<category><![CDATA[message]]></category>
		<category><![CDATA[time]]></category>

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		<description><![CDATA[If the user changes the system time either with Date and Time properties dialog box or using command line, we can detect this by catching WM_TIMECHANGE system message. Here is how. unit Unit1; &#160; interface &#160; uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs; &#160; type TForm1 = class&#40;TForm&#41; private { Private declarations [...]]]></description>
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		<title>How to detect system idle time</title>
		<link>http://www.delphitips.net/2007/11/11/how-to-detect-system-idle-time/</link>
		<comments>http://www.delphitips.net/2007/11/11/how-to-detect-system-idle-time/#comments</comments>
		<pubDate>Sat, 10 Nov 2007 23:48:47 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[System]]></category>
		<category><![CDATA[idle]]></category>
		<category><![CDATA[time]]></category>

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		<description><![CDATA[If you want to detect user inactivity even if your application is in background (has no focus), it&#8217;s really simple. You can achieve this using GetLastInputInfo function. This function is a standard Windows API function since Windows 2000 (it means it&#8217;s not compatible with Win9x generation). For more info about GetLastInputInfo, visit Microsoft Developer Network. [...]]]></description>
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		<title>Retrieve time since the system was started</title>
		<link>http://www.delphitips.net/2007/08/18/retrieve-time-since-the-system-was-started/</link>
		<comments>http://www.delphitips.net/2007/08/18/retrieve-time-since-the-system-was-started/#comments</comments>
		<pubDate>Sat, 18 Aug 2007 22:07:50 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[System]]></category>
		<category><![CDATA[start]]></category>
		<category><![CDATA[time]]></category>

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		<description><![CDATA[This tip is very simple. Just use standard function GetTickCount and the rest is just elementary mathematics. The declaration of function GetTickCount can be found in Windows unit (Delphi) and it is external kernel function. It retrieves the number of milliseconds that have elapsed since the system was started, up to 49.7 days (max. number [...]]]></description>
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