BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Wrapper of activex for existing unit          BorlandTalk.com Forum Index -> Delphi ActiveX Controls Development View previous topic :: View next topic   Author Message Salman Guest Posted: Wed Dec 06, 2006 10:09 pm    Post subject: Wrapper of activex for existing unit I have a working Delphi unit, which works fine after including in any Delphi application. However, now I want to use this functionality in another application that is written in VB.NET/C#. Due to this reason, I want to make this unit in an ActiveX and then import this to .NET. Is there anyone who can guide me how to do that? By the way, the unit file is based on socket programming. Thansk, Salman Bajwa. Back to top Wim Coenen Guest Posted: Thu Dec 07, 2006 10:37 pm    Post subject: Re: Wrapper of activex for existing unit Salman wrote: Quote: I have a working Delphi unit, which works fine after including in any Delphi application. However, now I want to use this functionality in another application that is written in VB.NET/C#. Due to this reason, I want to make this unit in an ActiveX and then import this to .NET. Is there anyone who can guide me how to do that? By the way, the unit file is based on socket programming. Thansk, Salman Bajwa. In short: Use "File - New" to create a new ActiveX library. In Borland Developer Studio 2006, it can be found under "Other - Delphi projects - ActiveX". Then use "File - New" again to create a new COM object in this ActiveX library. Your new COM object "Foo" with COM interface "IFoo" will be generated as the delphi class "TFoo". Now add a "uses" reference to the unit you want to wrap, and use the type library editor to add methods to "IFoo". Implement those methods in TFoo to expose the functionality of your unit. The resulting COM library can be wrapped by a .NET assembly with the tlbimp utility. Try "tlbimp /?" in a console. Good luck, WIC. 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