Hi,

Does anyone know how to temporarily disable autorun/autplay ? I am writing an app that needs to burn a CD, then eject and load, followed by validation of the data that was burned to the CD. The problem I am facing is that when my app eject and load, Windows autorun/autoplay feature will try to read from the CD, but because my app locks the drive, Windows will pop up an error message.

Now, I am aware of that Windows sends a "QueryCancelAutoPlay" message to the foreground window, and that we can suppress the autorun/autoplay by responding to that message. My problem is that my app runs hidden in the background, so it never receives this message :-/

Would really appreciate any help you can give ... thanks in advance.

Regards,
Christopher Tan

Christian,

I do not know myself and would only recommend Google-ing the topic. But maybe other guys here would be wiser then me

P.S. I do disable autorun myself always if you care. I think you know the reason

Hi Anton,

I have just done quite a bit of research on this and here is what I turned up:

Autoplay in Windows XP: Automatically Detect and React to New Devices on a System
http://msdn.microsoft.com/msdnmag/issues/01/11/autoplay/default.aspx

Jeffrey Richter's Explanation on Autorun
http://www.microsoft.com/msj/0998/win320998.aspx

The above two articles should give quite a good overview of how to work with Autorun and Autoplay.

IQueryCancelAutoPlay Interface Reference
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/ifaces/iquerycancelautoplay/iquerycancelautoplay.asp

A Useful Discussion on IQueryCancelAutoPlay
http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&threadm=Xns94E65829AE7D4macnealliinetnetau%40207.105.83.66&rnum=9&prev=/groups%3Fhl%3Den%26lr%3D%26ie%3DUTF-8%26selm%3DXns94E65829AE7D4macnealliinetnetau%2540207.105.83.66%26rnum%3D9

Complete C++ Implementation Code Sample
http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&selm=Xns94E65829AE7D4macnealliinetnetau%40207.105.83.66&rnum=9


Well, after finding all the above info, it looks like the only RELIABLE way to stop Autoplay from triggering is to use IQueryCancelAutoPlay.

However, I have to admit I don't have much knowledge on COM programming in Delphi (the dev environment I am using).

Anton, any chance you might consider adding support to temporarily Enable/Disable Autorun/Autoplay into Starburn SDK ? ... I think this is something that would be useful to most users who use Starburn SDK.

All the above info and code samples are in C++, so it should be relatively easy as compared to me having to learn COM, then figure out how to translate that into Delphi.

Well, keeping my fingers crossed

Regards,
Chris