CD ROM presence test

[JamesBee]

I'm developing some computer based training material and I need to write some code that will test for the presence of a CD ROM in the CD drive (the drive will always be D. At the moment I'm using the following :<br><br>&lt;head&gt;<br>&lt;script language=&quot;JavaScript&quot;&gt;<br>&lt;!--#<br>function noCD()<br>{<br>alert(&quot;Please put assets CD into your CD-ROM drive.&quot;<br>}<br>//--&gt;<br>&lt;/script&gt;<br>&lt;/head&gt;<br>&lt;body&gt;<br>&lt;img src=&quot;d:\\image\\testimage.gif&quot; width=&quot;1&quot; height=&quot;1&quot; border=&quot;0&quot; valign=&quot;middle&quot; onerror=&quot;noCD()&quot;&gt;<br>&lt;/body&gt;<br><br>This works, but only on a fast PC. It won't work on old P166's for instance. Anyone know a better way to test for the presence of a CD ROM? <br>

 

[jonthequik]

As soon as some people read this, I know the spit will hit the fan.&nbsp;&nbsp;There's a series of code in Microsoft JScript and VBScript, FileSystemObject that will give you access to files and drives on the visitors computer.&nbsp;&nbsp;They must grant access or lower the security on their system, but once your in, you can test for drives, folders, and files.<br><br>Here's an example:<br><br>function ShowDriveInfo1(drvPath)<br>{<br>&nbsp;&nbsp;&nbsp;var fso, drv, s =&quot;&quot;;<br>&nbsp;&nbsp;&nbsp;fso = new ActiveXObject(&quot;Scripting.FileSystemObject&quot;<br>&nbsp;&nbsp;&nbsp;drv = fso.GetDrive(fso.GetDriveName(drvPath));<br>&nbsp;&nbsp;&nbsp;s += &quot;Drive &quot; + drvPath.toUpperCase()+ &quot; - &quot;;<br>&nbsp;&nbsp;&nbsp;s += drv.VolumeName + &quot;&lt;br&gt;&quot;;<br>&nbsp;&nbsp;&nbsp;s += &quot;Total Space: &quot; + drv.TotalSize / 1024;<br>&nbsp;&nbsp;&nbsp;s += &quot; Kb&quot; + &quot;&lt;br&gt;&quot;; <br>&nbsp;&nbsp;&nbsp;s += &quot;Free Space: &quot; + drv.FreeSpace / 1024;<br>&nbsp;&nbsp;&nbsp;s += &quot; Kb&quot; + &quot;&lt;br&gt;&quot;;<br>&nbsp;&nbsp;&nbsp;Response.Write(s);<br>}<br><br>This script will display the free space and total size of a drive.<br><br>More information about FSO can be found at <A HREF="

http://msdn.microsoft.com/scripting/default.htm?/scripting/jscript/doc/jsFSOTutor.htm"

TARGET="_new">

http://msdn.microsoft.com/scripting/default.htm?/scripting/jscript/doc/jsFSOTutor.htm</A>

 

[celley]

Even if you did check to see if the cd-rom was present, you would have to dynamically create the path to the cd-rom to display the image.&nbsp;&nbsp;Not all cd-rom drives are labeled as the 'D:' drive.

 

[JamesBee]

Thankyou for the response. As my client is a high street bank I don't think they'll be too open to lowering security in there browsers. I'll look into it though, there might be a solution along those lines.<br><br>JamesB

 

[NickBulka]

You should also be aware that client side VBscript does not work in a Netscape browser <p>nick bulka<br><a href=mailto: > </a><br><a href=

http://www.bulka.com>

</a><br>Get your technical books at Bulka's Books<br>

http://www.vstorebooks.com/bulkasbooks