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Lee Louviere
Lee Louviere

Reputation: 5262

Attempting COM, Does C# use stdcall by default, or do you have to specify

The book I'm using describes C++ usage of COM and recommends __stdcall as a specifier, arguing that more languages use this method of stack cleanup.

However, I'm considering future interoperability with C#. Does C# use stdcall by default, or does it have to be specified?

Upvotes: 0

Views: 551

Answers (2)

Brandon Moretz
Brandon Moretz

Reputation: 7621

I would recommend using stdcall as the default specifier as it's the default used by C#. However, it's trivial to change the calling convention via "CallingConvention" attribute.

http://msdn.microsoft.com/en-us/library/system.runtime.interopservices.callingconvention.aspx

Upvotes: 2

Reed Copsey
Reed Copsey

Reputation: 564433

With COM interop, it doesn't matter as much.

If you're using Platform Invocation Services (P/Invoke), with C#, then stdcall is the default. (Technically, it's Winapi, which defaults to Stdcall on the desktop), but it can be overriden in a DllImport specification.

Upvotes: 2

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