How to p/invoke dll (x64) at platform (any cpu)?

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Hi all:
My Os is x64 sysetm.However I complier my program at "Any CPU" mode.
But I can't p/invoke any X86 or X64 dll file.
How to do that i can call X64 or X86 dll?
Thanks.

Well,
I use C# to build some GUI and some x64 image processing code(mamaged).
But I also want to call opencv function.I try to use emgu or opencvsharp to call dll file.
But i failed.

Posted 19-Aug-12 4:46am

wuling

Updated 19-Aug-12 5:03am

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[no name] 19-Aug-12 10:52am

Maybe you could try the clearly explaining what you are trying to do thing again...

2 solutions

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Christian Graus · Answer 1 · 2012-08-19T07:22:00

Solution 1

If your dll is X64, then why not build an X64 exe, given that the DLL is tying you to that platform anyhow ?

Posted 19-Aug-12 7:22am

Christian Graus

Comments

wuling 19-Aug-12 19:24pm

I have tried to build and run X64 exe, and program has some "use control" GUI. If I complier and run X64 exe, and result i get "BadImageExpection" Error. So the only way is to complier "Any CPU" Platform, and i only can debug and run this mode.

Christian Graus 19-Aug-12 20:16pm

If your issue is with a dll that is compatible with your system, then you need to post your p/invoke code so we can help fix it.

wuling 19-Aug-12 22:31pm

Dear Graus:
I think i can try:
Complier User control at "Any CPU" platform and don't complier at "x86" & "x64"
Complier Main program at "X64" platform and then call DLL files.
Then I will tell you the result

wuling 20-Aug-12 0:43am

Dear Graus:The result is I can't debug at this case.The only way is:

User control Complier:"Any CPU"
Main Pogram Complier:"Any CPU"

How to call dll(X64) File?? below list is p/invoke CUDA dll file and

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;namespace CudaPinvoke{

public static class CDLL {

internal const string CUDA_DRIVER_API_DLL_NAME = "nvcuda";

[DllImport("cudadll.dll", CallingConvention = CallingConvention.Cdecl)]

public static extern CUResult addWithCuda(int[] c, int[] d, int[] a, int[] b, ushort size);

[DllImport("cudadll.dll", CallingConvention = CallingConvention.Cdecl)]

public static extern CUResult addWithCuda1(int[] d, int[] c, ushort size);

[DllImport("cudadll.dll", CallingConvention = CallingConvention.Cdecl)]

public static extern CUResult ScanWithCuda(int[] src, int[] dsc2d, int[] dsc3d, int thresholdvalue, int sdown, int sup, int height, int size);

[DllImport("cudadll.dll", CallingConvention = CallingConvention.Cdecl)]

public static extern CUResult ScanWithCuda(byte[] src, int[] dsc2d, int[] dsc3d, int thresholdvalue, int sdown, int sup, int height, int size);

[DllImport("cudadll.dll", CallingConvention = CallingConvention.Cdecl)]

public static extern CUResult ScanWithCuda(IntPtr src, int[] dsc2d, int[] dsc3d, int thresholdvalue, int sdown, int sup, int height, int size);

[DllImport("cudadll.dll", CallingConvention = CallingConvention.Cdecl)]

public static extern CUResult gpuDeviceInit(int devID);

[DllImport(CUDA_DRIVER_API_DLL_NAME)]

public static extern CUResult cuDeviceGetProperties(ref CUDeviceProperties prop, CUdevice dev);

}}

and here is emgu p/invoke to call dll

[DllImport(OPENCV_IMGPROC_LIBRARY, CallingConvention = CvInvoke.CvCallingConvention)]

public static extern void cvLaplace(IntPtr src, IntPtr dst, int apertureSize);

How to do to call dll file at "Any CPU" platform???

wuling · Answer 2 · 2012-08-19T22:19:00

Solution 3

dear Christian Graus :
If all project setup "Any CPU" platform then i can call dll(x64) correctly.
thanks

Posted 19-Aug-12 22:19pm

wuling