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Dark GDK / Wrapping c++ library for use in .Net

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Cloggy
19
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Joined: 31st Oct 2004
Location: Rayleigh, Essex
Posted: 20th Jan 2009 00:46
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Now I have converted my D3DFunc dll to a static library that can be used in DGDK, I would like to take this on a step and make this available in .Net.

I know this is possible as it is how the .Net version of DGDK was created, but I have no idea how to go about it.

Can anybody point me in the right direction?

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Michael P
18
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Joined: 6th Mar 2006
Location: London (UK)
Posted: 20th Jan 2009 08:36
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Here is the best guide I found. Surprisingly google doesn't bring up many good ones:
http://www.ondotnet.com/pub/a/dotnet/2004/03/29/mcpp_part3.html

The guide focuses on wrapping a class, but if you want to wrap normal functions you can use static member functions in the managed class.
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Diggsey
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Joined: 24th Apr 2006
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Posted: 21st Jan 2009 20:33
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Ask kBessa

[b]Yuor signutare was aresed by a deslyxic mud...
BOX2D V2 HAS HELP FILES! AND A WIKI!
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Cloggy
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Joined: 31st Oct 2004
Location: Rayleigh, Essex
Posted: 21st Jan 2009 20:54
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I'm pretty sure kbessa created his plugins directly in .net. I may be wrong but he is using the slimDX .net library.

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A73
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Posted: 21st Jan 2009 21:49
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Hi Cloggy,

if you want to use your static library within .NET, it's necessary to provide some mechanism to allow managed code to handle the calls to the lib.

This is usually done by providing a 2 way wrapper, one that wraps the static library using C++ itself, thus allowing for wrapping over a C# class.

I've post you some links which hopefully points you to the right direction.

http://bytes.com/groups/net-c/251036-q-how-use-static-lib-c
http://www.codeguru.com/forum/archive/index.php/t-424674.html
http://forums.whirlpool.net.au/forum-replies-archive.cfm/372971.html
http://www.experts-exchange.com/Programming/Languages/.NET/Visual_CPP/Q_21044271.html
http://www.eggheadcafe.com/forumarchives/NETFrameworkinterop/Jul2005/post23266896.asp

Additional pages of interest:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmxspec/html/vcmg_accessingcodefromframeworkobjects.asp
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmex/html/vcconMCOverview.asphttp://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmxspec/html/vcManExMigrationGuidePart1_Start.asp
http://www.gamedev.net/community/forums/topic.asp?topic_id=500289

I hope this helps... Cheers and good luck!
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kBessa
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Joined: 8th Nov 2006
Location: Manaus, Amazonas, Brazil
Posted: 22nd Jan 2009 09:46
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All my released plugins were indeed made using SlimDX, so my code is 100% managed, C#.

You could problably just write a CLI/C++ (previously known as Managed C++) wrapper that calls you lib and expose methods to .NET.

The thing is, they problably won't work that way because you will try to call original DarkGDK methods, and you should be calling DarkGDK.NET methods. I think you'll have to make a different version for .NET, but it would be better if you chat with APEXnow. Try #dgdk-net @ irc.devhat.net

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Cloggy
19
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Joined: 31st Oct 2004
Location: Rayleigh, Essex
Posted: 22nd Jan 2009 22:07
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Thanks for the input everyone. I'm starting to think that I may be better off waiting for APEXnow to put the missing GDK methods that I require into the .Net version. I can then use the SlimDX library as I had for the code I had already converted.

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