[wdmaudiodev] Re: IKsControl
- From: Matthew van Eerde <mateer@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Tue, 2 Feb 2010 17:00:06 +0000
Do you have unknwn.h (sp?) #include'd before ks.h? What verson of Windows are
you building to? As I read ks.h it will only define IKsControl if _UNKNOWN_H_
is defined and NTDDI_VERSION >= NTDDI_WINXP.
--
Matthew van Eerde ... (425) 707-1042 ... mateer@xxxxxxxxxxxxx
perl -e "print join er,reverse',','l hack',' P','Just anoth'"
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Walker
Sent: Monday, February 01, 2010 5:42 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] IKsControl
Hi, I was wondering if someone knew anything about the specifics of this
thread:
//www.freelists.org/post/wdmaudiodev/Interfacing-Audio-Driver-From-USER-MODE,15
Specifically, I'm having trouble with
One you have an IBaseFilter, you just fetch an IKsControl interface from it:
CComQIPtr<IKsControl> pKsControl( myFilter );
The problem is that VC++ 2008 doesn't include IKsControl properly, so it
doesn't build. If I use:
#include "ks.h"
it still tells me that IKsControl is undefined.
If I do this:
interface DECLSPEC_UUID("28F54685-06FD-11D2-B27A-00A0C9223196") IKsControl;
it builds, but it doesn't find the interface.
hr = pBaseFilter->QueryInterface(IID_IKsControl, (void **) &pControl);
returns that the interface doesn't exist. I'm not using smart pointers
because I'm using VC++ express, no ATL.
IBaseFilter * pBaseFilter;
hr = pDeviceMonik->BindToObject(NULL, NULL,
IID_IBaseFilter,(void**)&pBaseFilter);
IKsControl *pControl;
hr = pBaseFilter->QueryInterface(IID_IKsControl, (void **) &pControl);
Thanks!
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