org.symbian.tools.wrttools.doc.WebDeveloper/html/GUID-7A68BE34-5C07-4008-A886-A20D92669E05.html
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</script><link href="../PRODUCT_PLUGIN/book.css" rel="stylesheet" type="text/css"/><link href="css/s60/style.css" rel="stylesheet" type="text/css" media="all"/></head><body onload="initPage();"><div class="body"><div class="contentLeft prTxt"><h1 class="pageHeading" id="GUID-7A68BE34-5C07-4008-A886-A20D92669E05">lightoff()</h1><div>
<p><strong>Syntax:</strong></p>
<pre class="codeblock" id="GUID-807F2D3F-CB66-413E-8F06-FA13963FEB54">[void] sysinfo.lightoff(String lighttarget, Int duration, Int fadeout)</pre>
<p><strong>Description:</strong></p>
<p>The <code>lightoff</code> method switches the specified target light off for the specified duration.</p>
<p><strong>Argument:</strong></p>
<ul>
<li><p><code>lighttarget</code>:</p>
<p>Defines which target light should be turned off. Use one of the supported target light properties to specify a target light.</p>
</li>
<li><p><code>duration</code>:</p>
<p>Defines the period during which the target light is switched off. The period is measured in milliseconds.</p>
<p>After the duration expires, the light state of the target will be changed to whatever state was caused by the last infinite time duration call. If there has not been a previous infinite time duration call in a session, the default state determined by the inactivity timer (system backlight timeout) is used.</p>
<p>If <code>duration</code> is <a href="GUID-A4CEF923-1DE8-46E0-8D42-79AA621A06A2.html#GUID-A4CEF923-1DE8-46E0-8D42-79AA621A06A2"><code>lightinfiniteduration</code></a>, the target light can be turned on only when some other light control method is called.</p>
</li>
<li><p><code>fadeout</code>:</p>
<p>If <code>true</code>, target lights will not turn off instantly but fade-out smoothly instead. If <code>false</code>, target lights will be turned off immediately.</p>
</li>
</ul>
<div class="note"><p><strong class="note_title">Note: </strong>All devices might not support fade-out, in which case the device will behave in its default manner.</p>
</div>
<p><strong>Return value:</strong></p>
<p>This method does not return a value.</p>
<p><strong>Example code:</strong></p>
<pre class="codeblock" id="GUID-5F266902-60F8-432B-8FFB-EDEB7E09FC98">function callLightOff()
{
// get the Embed element reference
var sysinfo = document.embeds[0];
/*********************
call lightoff() method, which turns off the light
of all displays and keyboard for 5 seconds of duration
and using fading out mode
*********************/
var target = sysinfo.lighttargetsystem;
var duration = 5000; // 5 seconds
sysinfo.lightoff(target, duration, true);
}
</pre>
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