altLeft Property

Retrieves a value that indicates the state of the left ALT key.

Syntax

[ bPressed = ] event . altLeft

Possible Values

bPressed

Boolean that receives one of the following values.

false	Left ALT key is not pressed.
true	Left ALT key is pressed.

The property is read-only. The property has no default value.

Expressions can be used in place of the preceding value(s), as of Microsoft® Internet Explorer 5. For more information, see About Dynamic Properties .

Remarks

This property is currently supported only in Microsoft® Windows NT® 4.0 and Microsoft Windows® 2000.

The document must have focus for this property to return true.

No altRight property is available. Authors can test for the right ALT key by using the altKey and altLeft properties.

Example

The following example shows how to use the altLeft property to indicate when the user presses the left or right ALT keys.

<HEAD>
<SCRIPT>
function init() { spanLeftAlt.innerText='false'; spanRightAlt.innerText='false'; }
function indicate(obj, arg) { obj.innerText=arg; }
function AltDown() {
if (event. altLeft ) { indicate(spanLeftAlt,'true'); }
else { if (event.altKey) { indicate(spanRightAlt,'true'); } } }
function AltUp() {
if (!event.altKey) { indicate(spanLeftAlt,'false'); indicate(spanRightAlt,'false'); } }
</SCRIPT>
</HEAD>
<BODY onload="document.body.focus(); init()" onkeydown="AltDown();" onkeyup="AltUp();">
<P>Press either the left or right ALT key.</P>
<TABLE> <TR> <TD><I>Left ALT Key Pressed</I></TD> <TD>
<I>Right ALT Key Pressed</I></TD> </TR>
<TR> <TD ALIGN="center"><SPAN ID="spanLeftAlt"></SPAN></TD>
<TD ALIGN="center"><SPAN ID="spanRightAlt"></SPAN></TD> </TR>
</TABLE> </P>
</BODY>

Standards Information

There is no public standard that applies to this property.

Applies To

[ Object Name ] Platform Version

Win32:
Windows CE:

event

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