Hi,

I'm trying to marshal data from a C API. The struct contains an array of
structs. The Marshal.PtrToStructure call throws a TypeLoadException with the
message - "Can not marshal field struct_arr of type NODE: This type can not
be marshaled as a structure field."

Changing from an array of structs to an array of blittable types works.

Is it possible to marshal an array of structs?

[StructLayout(LayoutKind.Sequential), ComVisible(false)]
public struct NODE
{
   public uint       id;           
   [MarshalAs( UnmanagedType.ByValArray, SizeConst=3 )]
   public byte[]    byte_arr;
   [MarshalAs( UnmanagedType.ByValArray, SizeConst=3 )]
   public FOO[]    struct_arr;
}

[StructLayout(LayoutKind.Sequential), ComVisible(false)]
public struct FOO
{
   public ulong val;
   public byte state;
}