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Nikita wrote:
> I would like to find out if MSXML 3 or higher is installed on a
> computer during an installation so that, if MSXML is not installed or
> the version is below 3, then I install MSXML 4. How can I do that?
Hi,
I had the same problem for the installation process of one of my PC Mag
Utilities. I used the HTML page below to detect the user's context.
--
Patrick Philippot - Microsoft MVP
MainSoft Consulting Services
www.mainsoft.fr
------------- xmldetect.htm - cut here ---------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Version Detection</title>
<script language="jscript">
function XMLClientVer()
{
//*********************
// Public properties
//*********************
this.bIsMSXML4 = false;
this.bIsMSXML3 = false;
this.bIsMSXML2 = false;
var majorversion;
var minorversion;
var requiredversion = 5;
if (typeof(ScriptEngineMajorVersion) + "" == "undefined")
{
majorversion = 1;
minorversion = 0;
}
else
{
majorversion = ScriptEngineMajorVersion();
minorversion = ScriptEngineMinorVersion();
}
document.write("<p>JSCRIPT ");
document.write("<b>"+majorversion+"."+minorversion+"</b>");
if (majorversion < requiredversion)
document.write("<br><i>You need a more recent version of JSCRIPT to run
this XML detection page (see links below).</i><br>");
else
document.write("<br><i>This version of JSCRIPT is sufficient to run
MyApp.</i><br>");
var e = new Error();
var oXML = null;
// Try to load the most recent version of the MSXML parser;
// if that fails, try to load the next most recent version, and so on.
// Always test using the version *dependent* PROGID.
try
{
// Test for MSXML 4.0
oXML = new ActiveXObject("MSXML2.DOMDocument.4.0");
oXML = null;
this.bIsMSXML4 = true;
//return;
}
catch (e)
{
try
{
// Test for MSXML 3.0
oXML = new ActiveXObject("MSXML2.DOMDocument.3.0");
oXML = null;
this.bIsMSXML3 = true;
//return;
}
catch (e)
{
try
{
// Test for MSXML 2.0
oXML = new ActiveXObject("Microsoft.XMLDOM.1.0");
oXML = null;
this.bIsMSXML2 = true;
//return;
}
catch (e)
{
// Stub
}
}
}
document.write("<p>MSXML ");
if (!this.bIsMSXML3 || !this.bIsMSXML4)
{
if (this.bIsMSXML4)
{
document.write("<b>4.0</b>");
document.write('<br><i>This version of MSXML is sufficient to run
MyApp.</i>');
}
else
{
var xmlDoc = new ActiveXObject("MSXML2.DOMDocument.3.0");
var dummyxml = '<?xml version="1.0"?><books><book/></books>';
xmlDoc.async = false;
xmlDoc.loadXML(dummyxml);
xmlDoc.setProperty("SelectionLanguage", "XPath");
xmlDoc.setProperty("SelectionNamespaces",
"xmlns:my='urn:http//www.my.com/schema/'");
var nodelist = xmlDoc.documentElement.selectNodes("child::my:book");
var expected = "xmlns:my='urn:http//www.my.com/schema/'";
var actual = nodelist.getProperty("SelectionNamespaces");
if (actual != expected)
{
document.write("<b>3.0</b>");
document.write('<br><i>Use the link below to install SP2 or upgrade to
MSXML 4 before continuing the installation.</i>');
}
else
{
document.write("<b>3.0 SP2</b>");
document.write('<br><i>This version of MSXML is sufficient to run
MyApp.</i></b>');
}
}
}
else
{
document.write("<b>below 3.0</b>");
document.write ('<br><i>Use the link below to upgrade to MSXML 3 SP2 or
MSXML 4 before continuing the installation.</i>');
}
}
</script>
</head>
<body>
<h1>Component Version Detection</h1>
MyApp requires MSXML 3 SP2 or higher, and JSCRIPT 4.0 or higher. You are
running:
<SCRIPT LANGUAGE=JSCRIPT>
XMLClientVer();
</SCRIPT>
<P>
<HR>
<P>
<P>MSXML upgrade packages are available <a
href="http://msdn.microsoft.com/downloads/default.asp?url=/downloads/sample.asp?url=/MSDN-FILES/027/001/772/msdncompositedoc.xml&frame=true">here</a>.
<P>Microsoft Windows Installer is required to install MSXML 3. If
running the MSXML installer generates an MSI error, download the latest
version.
<p>- For Windows NT4, 2000, and XP, click <a
href="http://www.microsoft.com/downloads/release.asp?releaseid=32832&NewList=1">here</a>.
<br>- For Windows 95, 98, and Me, click <a
href="http://www.microsoft.com/downloads/release.asp?ReleaseID=32831">here</a>.
<P>The JSCRIPT upgrade package is available <a
href="http://msdn.microsoft.com/downloads/sample.asp?url=/MSDN-FILES/027/001/733/msdncompositedoc.xml">here</a>.
<P>
<HR>
</html>
------------- xmldetect.htm - cut here ---------------
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