Question

So I have a function inside of a C++ library:

double MyFunc(double** data, int length)
{
    //data elements are accessed like this
    (*data)[i] = 5.0;
}

In C# I access this function in this way:

//import
[DllImport(@"MYDLL.dll")]
public static extern double MyFunc(ref double[] data, int length);
//usage
MyFunc(ref data, data.Length);

This is silly since I would rather write:

double MyFunc(double* data, int length)
{
    //data elements are accessed like this
    data[i] = 5.0;
}

The problem is, I do not know how I could access the desired C++ function from C#…I am not well versed in Marshaling values…How would I do this?

Answer 1

You can simply pass a double[] directly.