get weather data from pdk api

[Mer 0]

https://www.prepar3d.com/SDKv4/sdk/pdk_api/service_providers/group__weatherservice.htm

 

I need to access the functions made available by the above service through a C# console application

 

I tried using C++ code and making the dll aviailable in C#. My codes:

C++

extern "C" __declspec(dllexport) void __stdcall getPressure()
{
    printf("Reading global pressure :  ");
    CComPtr<IWeatherSystemV430> weatherSystem = PdkServices::GetWeatherSystem();
    printf("weather system ");
     float pressure = weatherSystem->GetGlobalBaroPressure();
    printf("%f", pressure);
}

 

 

C#

        [DllImport("CameraPDK.dll", CallingConvention = CallingConvention.StdCall)]
        public static extern float getPressure();

         
        static void Main(string[] args)
        {
            Console.WriteLine("The global pressure is {0}",getPressure());

        }

 

But i get a system.accessviolation when the execution reaches GetGlobalPressure() function

 

Could anyone guide me on the right way to do it?

 

Thank you

 

[mopperle 4179]

I guess it would be better to ask this question in the Prepar3D developer forum:
https://www.prepar3d.com/forum/viewforum.php?f=54658&amp;sid=547a40256a09085215e808d02bb3f892

[mopperle 4179]

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