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How do DLL files work ?

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Old 22 April 2007, 09:21 AM
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velohead66
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Question How do DLL files work ?

Basically I notice that I have 2 identical DLL files in different directories.

shimgvw.dll - same size, same date.



Would having 2 files instead of 1 cause any conflicts ?
Can I just delete them, or will that corrupt anything ?
How do I find out which application uses them ?

Thx.
Old 22 April 2007, 09:37 AM
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MattW
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shimgvw.dll is used by windows to view pictures. Perfectly valid to have it in mor ethan one location so I suggest you leave alone.
Old 22 April 2007, 09:48 AM
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TopBanana
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This is the windows picture and fax viewer. It should be in system32. I can't think why it would be anywhere else, except a service pack folder.

Still, it won't do any harm as it's a COM DLL and can only be registered in one place.
Old 22 April 2007, 09:54 AM
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velohead66
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they are in.....

c:/windows/system32
c:/windows/servicepackfiles/i386


....but i'm having problems with codec, with 100% cpu usage.
so I might delete them.
Old 22 April 2007, 09:59 AM
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Iain Young
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Originally Posted by velohead66
they are in.....

c:/windows/system32
c:/windows/servicepackfiles/i386


....but i'm having problems with codec, with 100% cpu usage.
so I might delete them.
Not a good idea. That sounds more like a problem with the codec than the dlls, and deleting them may cause more trouble...

Having two isn't unusal, (and I expect they are identical - from the latest servicepack). Only one can be registered...
Old 22 April 2007, 10:33 AM
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Dracoro
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Check which is registered. Unregister it (backup registry, keep copies of dll files to re-register if it ***** something up too).

However, I agree with Iain above, I suspect the codec is where the problem lies, not the dlls. Or maybe a later version of the DLL is available?
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