Re: Problem with DeviceIoControl() IOCTL_STORAGE_QUERY_PROPERTY

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#4652

From: Andrue Cope [TeamB]
Date: Fri, 16 Dec 2005 09:13

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Richard Bradbrook wrote:

> I also advise you to VirtualAlloc a buffer somewhere for all your I/O
> transfers. When buffers are not correctly alligned, DeviceIoControl
> often fails with the error you're getting - that's where the
> 'AlignmentMask' value comes in.

The problem was that neither of us had 'treat enums as ints' set so the
size and layout of the query structure was wrong.

-- 
Andrue Cope [TeamB]
[Bicester, Uk]
http://info.borland.com/newsgroups/guide.html

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From: "Andrue Cope [TeamB]" <no.spam@not.a.valid.address>
Subject: Re: Problem with DeviceIoControl() IOCTL_STORAGE_QUERY_PROPERTY
Newsgroups: borland.public.cppbuilder.nativeapi
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