问题描述:

I've spent all day researching this, and I'm none the wiser:

I have a C# DLL which PInvokes a method in a C++ DLL. I have had no problems doing this when compiling in Debug mode, but when compiling in Release mode I get an AccessViolationException. Googling this problem tells me that it's probably an issue with incompliant calling conventions. The code now looks like this in C#:

[return: MarshalAs(UnmanagedType.U1)]

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

internal static extern Boolean AMethod(Int32 mode, byte frame);

and in C++:

extern "C" {

DLL_EXPORT bool AMethod(int mode, BYTE frame)

{

...

}

}

I've set the C++ project to compile with the __cdecl calling convention in VS2010, but I still get the AccessViolationException and I have no idea what more I can do. I should note that my C++ DLL uses third-party DLLs, and I do not know what calling convention they use.

Any help would be appreciated!

Oh, and I don't get the exception on my development machine, only on my target system.

网友答案:

Try with this reordering of statements :

[DllImport("Native.dll", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.U1)]
internal static extern Boolean AMethod(Int32 mode, byte frame);
相关阅读:
Top