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using C DLL in C# code : error - Cannot marshal 'parameter #2': Internal limitation: structure is

Posted By:      Posted Date: May 22, 2011    Points: 0   Category :WPF

I have to use a dll written in C in a C# VS project.

I have some difficulties to translate and use the structures declared in C.

structure of the trend list :

C structure

 typedef struct
    WV_PARAMETER_ID    WvParameterID [WV_MAX_TREND_PARAMETERS];                  ;
    int                NumberOfTrends;



The problem I have is that there is only one returned value for the "NumberOfTrends" but 60 for the others. Then I found that I need to create the structures as follow.

This is working.

C# Structure

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
        public struct WV_TREND_LIST

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