I use (and wrote) DBD::WMI to monitor the addition/removal of devices, but using it in a GUI program means that you'll have to use a second thread that listens to the WMI.

If you're using Win32::GUI, then yes, those messages will get sent to your top level window as well.

Looking through Win32::GUI, resp. the Win32::GUI examples, I see listview_drag_drop.pl, which hooks a message (WM_CONTEXTMENU) to a callback. I didn't find it documented anywhere, but it seems that it is a/the way to specify callbacks to window messages in Win32::GUI. I guess that the following code should issue the callback whenever a device changes:

use constant WM_ONDEVICECHANGE => 0x219; # as per http://msdn.microsof
+t.com/en-us/library/aa363480%28VS.85%29.aspx
$window->Hook(\&device_changed);

sub device_changed {
    ...
};

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In reply to Re: How do I know when a USB device is inserted? by Corion
in thread How do I know when a USB device is inserted? by ZJ.Mike.2009

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