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<title>MFC Timers - A Tutorial</title>
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<b>MFC Timers - A Tutorial
</b></font>
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<img src="Colorbar.gif" border="0" align="center" ><br>
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<b><u>Starting the timer</u></b>
<p>
To start the timer, you must issue a <b><i>SetTimer</i></b> command:
<p>
<ul>
<i>t-number</i><b> = SetTimer (</b><i>t-message</i><b>,
</b><i>t-interval</i><b>, NULL)</b>
</ul>
<p>
<i><b>where</b></i>:
<ul>
<table>
<tr>
<td valign=top>
<i>t-message</i>
<td>
The message number assigned for processing the timer request.
<br>
This is referred to as <b>IDT_TIMER_0</b> in the
<a href="Install.html">installation</a>
instructions.
<tr>
<td valign=top>
<i>t-interval</i>
<td>
The timer duration, in mSec.
<tr>
<td valign=top>
<i>t-number</i>
<td>
The system timer number assigned to this event, or 0 if no timers available.
</table>
</ul>
<p>
<b>For Example:</b>
<p>
<ul>
<pre>
UINT StartTimer (UINT TimerDuration)
{
UINT TimerVal;
TimerVal = SetTimer (IDT_TIMER_0, TimerDuration, NULL);
if (TimerVal == 0)
{
MessageBox ("Unable to obtain timer","IDT_TIMER_0",MB_OK|MB_SYSTEMMODAL);
}
return TimerVal;
}// end StartTimer
</pre>
To start the timer, pass it the value of the timer duration, in milliseconds (mSec). If
the returned value is non-zero, the timer has been initialized.
<p>
<b>Note:</b> You must save the assigned timer value in order to stop the timer, and also
to know which timer to process in a multi-timer application.
<p>
</ul>
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Copyright (c) 1997,1998. EarthWalk Designs.
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Direct all inquiries to:<a href="mailto:jay@earthwalkdesigns.com">Jay Wheeler</a>
at EarthWalkDesigns.com
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