Marshal struct to unmanaged array
- by Pedro
Hi guys,
I have a C# struct to represent a cartesian vector, something like this:
public struct Vector
{
private double x;
private double y;
private double z;
//Some properties/methods
}
Now I have an unmanaged C dll that I need to call with P/Invoke. Some methods expect a double[3] parameter.
The unmanaged C signature is something like
void Cross(double a[3], double b[3], double c[3]);
Is there any way to set up a P/Invoke signature so I can pass instances of my Vector struct and marshal them transparently to unmanaged double[3]? I would also need bidirectional marshaling as the unmanaged function needs to write the output to the argument array, so I guess I would need to marshal as LpArray.
Any ideas?
Thanks
Pedro
