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POHow to provide a HWND to DirectSound SetCooperativeLevel in a console program?
 

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  1. POHow to provide a HWND to DirectSound SetCooperativeLevel in a console program?
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    <p>I'm writing a console program that uses DirectSound API to render some audio data. I stumbled on a curious problem when following the <a href="http://msdn.microsoft.com/en-us/library/ee416964%28v=VS.85%29.aspx" rel="nofollow">DirectSound Programming Guide (from Microsoft)</a>. According to the <a href="http://msdn.microsoft.com/en-us/library/ee416970%28v=VS.85%29.aspx" rel="nofollow">documentation</a> :</p> <blockquote> <p>After creating a device object, you must set the cooperative level for the device by using the <a href="http://msdn.microsoft.com/en-us/library/microsoft.directx_sdk.idirectsound8.idirectsound8.setcooperativelevel%28v=VS.85%29.aspx" rel="nofollow">IDirectSound8::SetCooperativeLevel</a> method. Unless you do this, no sounds will be heard.</p> </blockquote> <p>The problem is that I'm writing a console program, and <code>SetCooperativeLevel</code> requires a HWND as a first argument. I don't have any HWND to deal with in the console program. I tried providing a null pointer but it failed with a <code>DSERR_INVALIDPARAM</code> error code.</p> <p>What HWND value should be provided to <code>IDirectSound8::SetCooperativeLevel</code> in a console program ? The audio part of the program is planned to be built as a shared library, so it has little to no knowledge of the "outside" program.</p> <p>Thanks for any advice !</p> <p><em>Note : I know that there is a somewhat better solution for simply rendering audio, like using SDL, OpenAL, SFML (based on OpenAL), but for my current project DirectSound is enforced.</em></p> <hr> <p><strong>Edit</strong> : I found a <a href="http://groups.google.com/group/microsoft.public.win32.programmer.directx.audio/msg/2145cdcf7753c9c3" rel="nofollow">message</a> from a Microsoft engineer that removes doubts about using the desktop window or the console window as a HWND for <code>SetCooperativeLevel</code> when creating GLOBAL_FOCUS buffers.</p>
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