I want my Perl script to know when a USB device is inserted and which new volume letter appear on my Windows XP. I've done a little of googling and I've found something that looks relevant to my question: 
1. The system broadcasts a set of default device change events to all 
+application.
2. Any application with a top-level window can receive basic notificat
+ions by processing the WM_DEVICECHANGE message.
3. The DBT_DEVICEARRIVAL and DBT_DEVICEREMOVECOMPLETE events are autom
+atically broadcast to all top-level windows. Volume notifications are
+ also broadcast to top-level windows.

[download]
My question is: 
1. If I create a simple GUI application using Win32::GUI, will this ap
+plication also receive DBT_DEVICEARRIVAL message sent by Windows syst
+em?
2. If so, how do I look at the message. I checked the Event method of 
+Win32::GUI and there're GetMessage() and PeekMessage() methods. Are t
+hey going to see the DBT_DEVICEARRIVAL message?
3. Or are there some other approaches, for example, using Win::API to 
+import the WM_ONDEVICECHANGE function and then do some stuff?

[download]
Thanks for your attention :)

In reply to How do I know when a USB device is inserted? by ZJ.Mike.2009

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.