Backlight Meta Tag

Backlight (META Tag) Syntax
<META HTTP-Equiv="backlight" content="[parameter>

Items listed in this section indicate methods or, in some cases, indicate parameters which will be retrieved.

Name	Description	Default Value
On	Turn on the screen backlight	N/A
Off	Turn off the screen backlight	N/A

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META Tags

Javascript

<!-- The Backlight META Tag is an action tag used to illuminate / extinguish the display backlight as well as setting the intensity of the backlight. --> <!-- <META HTTP-Equiv="Backlight" Content="On"> --> <!-- Turn on the screen backlight --> <!-- <META HTTP-Equiv="Backlight" Content="Off"> --> <!-- Turn off the screen backlight -->

<script> /* The Backlight META Tag is an action tag used to illuminate / extinguish the display backlight as well as setting the intensity of the backlight. */ function doBacklightInit() { var objGeneric = new ActiveXObject("PocketBrowser.Generic"); //objGeneric.InvokeMETAFunction('Backlight', 'On'); /* Turn on the screen backlight */ //objGeneric.InvokeMETAFunction('Backlight', 'Off'); /* Turn off the screen backlight */ } </script>

Items listed in this section indicate parameters, or attributes which can be set.

Name	Possible Values	Description	Default Value
Intensity:[Value]	Positive Number, see remarks for range	Sets the screen backlgith to the specified intensity.	Device Dependant

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META Tags

Javascript

<!-- The Backlight META Tag is an action tag used to illuminate / extinguish the display backlight as well as setting the intensity of the backlight. --> <!-- <META HTTP-Equiv="Backlight" Content="Intensity:[Value]"> --> <!-- Sets the screen backlgith to the specified intensity. -->

<script> /* The Backlight META Tag is an action tag used to illuminate / extinguish the display backlight as well as setting the intensity of the backlight. */ function doBacklightInit() { var objGeneric = new ActiveXObject("PocketBrowser.Generic"); //objGeneric.InvokeMETAFunction('Backlight', 'Intensity:[Value]'); /* Sets the screen backlgith to the specified intensity. */ } </script>

The following turns on the screen backlight and sets the intensity to level 2

<META HTTP-Equiv="Backlight-On" Content="Intensity:2">

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<!-- The following turns on the screen backlight and sets the intensity to level 2 --> <META HTTP-Equiv="Backlight-On" Content="Intensity:2">

General

The intensity tag will only have an observable effect if the screen backlight is turned on, setting the intensity by its self is insufficient to illuminate the backlight. Windows Mobile 6.5 offers an 'auto' backlight feature, this must be set to 'manual' to have full control over the backlight intensity.

Device Limits

The levels of supported screen backlight intensity is device dependant. When the Backlight module is first loaded it writes the supported levels to the log file as INFORMATION so you can determine the maximum setting from the log file.

Supported Platforms	Windows CE, Windows Mobile
Persistence	This tag is persistent.
Min. Requirements	None