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This is the system events info I got when I did a manual time change on a vista system:<br />
<br />
Look for <br />
Source: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Kernel-General &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
Logged: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date &amp;&nbsp;Time<br />
EventID: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
Task Category: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;None<br />
Level: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Information &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
Keywords: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Time<br />
<br />
&nbsp;<a href="https://filedb.experts-exchange.com/incoming/2010/11_w49/374336/time-chg-event-vwr.txt" target="_blank" class="file-inline" title="Time Change Event Viewer Info (1 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>time-chg-event-vwr.txt</a>
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This is the system events info I got when I did a manual time change on a vista system:

Look for
Source:       Kernel-General                  
Logged:       Date & Time
EventID:      1                        
Task Category:      None
Level:            Information                  
Keywords:      Time

 time-chg-event-vwr.txt [https://filedb.experts-exchange.com/incoming/2010/11_w49/374336/time-chg-event-vwr.txt]

time-chg-event-vwr.txt

<div>
thanks for answers.<br />
<br />
i made a program that checked the time changing more than 1 minute or not.<br />
it seems to work!<br />
<br />
thank you all answers again.
</div>


thanks for answers.

i made a program that checked the time changing more than 1 minute or not.
it seems to work!

thank you all answers again.

<div>
<div class="content wysiwyg-content">
<br />
How can I distiguish the event which user requests from the event which<br />
'window system' requests?<br />
<br />
I use 'SystemEvents.TimeChanged'<wbr /> event in order to recognize if user changes the clock. <br />
However in some cases 'window system' seems to change the clock. <br />
This happens once a week in case of Vista.<br />
<br />
&nbsp;I want to use this event only when user changes the clock. <br />
How can I distinguish those events?<br />
<br />

</div>
</div>



How can I distiguish the event which user requests from the event which
'window system' requests?

I use 'SystemEvents.TimeChanged' event in order to recognize if user changes the clock. 
However in some cases 'window system' seems to change the clock. 
This happens once a week in case of Vista.

 I want to use this event only when user changes the clock. 
How can I distinguish those events?



how to know user changes the clock

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