How do I convert c struct from dll to C#
- by poco
I am converting a application from c++ to C# and have a question about the proper way to handle importing structs. I am attempting to convert a struct from a c dll into c# The struct in c looks like this
typedef struct card_info
{
ushort r;
ushort s;
enum_a a;
usinged long ul;
ushort n;
ushort* b;
ushort id;
} CARD_INFO;
when i use [StructLayout(LayoutKind.Sequentaial)] the size of the array is 20 bytes in c#. However, if take a look at my working c++ code it is 24 bytes. I changed my c# to look like this:
[StructLayout(LayoutKind.Explicit)]
public struct CardInfo
{
[FieldOffset(0) public ushort r;
[FieldOffset(2) public ushort s;
[FieldOffset(4) public EnumA a;
[FieldOffset(8) public ushort ul;
[FieldOffset(12) public ushort n;
[FieldOffset(16) public UInt32 b;
[FieldOffset(20) public ushort id;
}
This seems to compile but I'm not convinced this is the correct way to go about doing this. Please let me know if this is correct or if there is a better way.
Thanks
