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DirectSoundEnumerate

Posted on 1998-07-08
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My app uses waveout and if available directsound. If I link to dsound.lib and my app is run on a machine that does not have directx installed, user will receive 'dsound.dll not found message'. Therefore I would like to use COM interface so that I don't have to link to dsound.lib.

I only use two dsound.lib functions: DirectSoundCreate and DirectSoundEnumerate. I can use COM interface to do DirectSoundCreate but I don't know how to do DirectSoundEnumerate. Thanks for your help!
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Question by:overworked
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6 Comments
 
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Expert Comment

by:chensu
ID: 1409670
What do you mean? DirectSoundCreate and DirectSoundEnumerate are just normal functions, not COM interfaces. Why can't you do DirectSoundEnumerate while you can do DirectSoundCreate?
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Author Comment

by:overworked
ID: 1409671
I can accomplish a DirectSoundCreate by doing a CoCreateInstance on the CLSID_DirectSound / IID_IDirectSound but there's no COM interface or method to accomplish a DirectSoundCreate. Therefore I need to extern it and link to dsound.lib which causes 'dsound.dll not found' message to appear when user does not have DX installed. However, I think I'll just dynamically link.
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Author Comment

by:overworked
ID: 1409672
Oops, in previous text substitute 'method to accomplish a DirectSoundEnumerate' with text 'method to accomplish a DirectSoundCreate'.
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Author Comment

by:overworked
ID: 1409673
Ignore, here's comment with out my error:

I can accomplish a DirectSoundCreate by doing a CoCreateInstance on the CLSID_DirectSound / IID_IDirectSound but there's no COM interface or method to accomplish a DirectSoundEnumerate. Therefore I need to extern it and link to dsound.lib which causes 'dsound.dll not found' message to appear when user does not have DX installed. However, I think I'll just dynamically link.

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LVL 23

Accepted Solution

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chensu earned 400 total points
ID: 1409674
That's easy to accomplish. Use LoadLibrary to load the dsound.dll. If sucessful, use GetProcAddress to get the function pointer. Note the actual function names are DirectSoundEnumerateA (ANSI version) and DirectSoundEnumerateW (Unicode version).
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Author Comment

by:overworked
ID: 1409675
I know, I know :)

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