topic Re: C# DllImport and IPP 6.0 in Intel® Integrated Performance Primitives

C# DllImport and IPP 6.0

onepieceking — Mon, 04 May 2009 09:03:34 GMT

Hi,

I am using IPP 6.0.0.062 and Visual C++ 2008 Express to create my own DLL containing some IPP functions. I have no problem building the DLL.

Next, I am using Visual C# 2008 Express to create a window application that will do a DllImport of my "IPP" DLL. I am experiencing problems as there is always a DllNotFoundException.

However, if I were to using IPP 5.1 and Visual C++ 2008 Express to create the DLL, the DllNotFoundException will be gone and my "IPP" functions all working fine.

What could be the problem? I want to use IPP 6.0.

Re: C# DllImport and IPP 6.0

elhefe38 — Mon, 04 May 2009 09:13:26 GMT

Quoting - onepieceking

Depends is your friend ! :)
Most probably some dlls cannot be found at runtime...

regards

Re: C# DllImport and IPP 6.0

onepieceking — Wed, 06 May 2009 12:24:38 GMT

shouldn't IPP 5.1 and 6.0 work similarly? If IPP 5.1 works in that way, I don't see why IPP 6.0 cannot work in the same way

Re: C# DllImport and IPP 6.0

elhefe38 — Wed, 06 May 2009 13:16:29 GMT

Quoting - onepieceking

shouldn't IPP 5.1 and 6.0 work similarly? If IPP 5.1 works in that way, I don't see why IPP 6.0 cannot work in the same way

Well, yes. They *should* work in similar ways. However they seem to behave differently so I guess you need to dig deeper... :)

regards

EDIT: one other possible cause of this error message is when you try to load a 32 bit dll into a 64 bit app... are you in such a case ? (in which case the fix would be obviously to install the emt64 version of IPP)

Re: C# DllImport and IPP 6.0

Vladimir_Dudnik — Thu, 07 May 2009 11:55:30 GMT

Hello,

I also wouldrefer to IPP custom DLL sample which do exactly this job - build custom DLL with several IPP functions and application which load this DLL and call functions from it.

Regards,
Vladimir