When should I explicitly specify a StructLayout?

Posted by biozinc on Stack Overflow See other posts from Stack Overflow or by biozinc
Published on 2008-12-26T16:25:01Z Indexed on 2010/03/17 4:51 UTC
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c#

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interop

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struct

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marshalling

I'm fiddling with calling DLLs from C#, and came across the need to define my own structs. Lots of articles force a sequential layout for the struct with

[StructLayout(LayoutKind.Sequential)]
struct Foo ...

So, I followed suite, and my programme worked. Now, when I took the line out, it still works. Why do I need it?

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