Calling external DLL in Vista 20 times slower than XP

[NeilTrain]

I have an app that uses dllimport to call a function in an old VC++ 6 dll.

In XP the function on average takes 1-2 seconds to complete. In Vista it takes an average of 28 seconds.

Anyonw know how I can speed this up?

 

[JurkMonkey]

Don't use Vista - it's a pig.

http://www.ubuntu.com/

 

[NeilTrain]

I cant stop my users from using Vista. Somewhere in the ballpark of 100k users in the US and Canada. The number of them on Vista is steadily growing.

 

[chiph]

Sounds like it might be a security problem.

Is the DLL in the same directory as the application?

Chip H.


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If you want to get the best response to a question, please read FAQ222-2244 first

 

[NeilTrain]

Yes, the dll is installed to the same directory. However, some of the other dll's this dll calls may reside in the System32 directory.