Question

Embeding a file in a DLL

Asked by: apostrophe27

Is there a way I can embed a .lib file in a dll? The .lib belongs to a different dll, not the one I'm embedding it in.

Thanks.

John

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Asked On
2009-09-30 at 09:53:13ID24774296
Topic

Windows MFC Programming

Participating Experts
3
Points
500
Comments
4

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Answers

 

by: waysidePosted on 2009-09-30 at 10:10:35ID: 25460977

What is it you are trying to do with the .lib file?

If you are just trying to carry it as payload, there are a couple of things you can do.

You could insert it as a resource when you build the dll.

Or you can just append it to the back of the dll, and then add the offset in the file where it starts as the last 4 bytes. Open the file, jump to the end-4 bytes, read the offset, jump to it, and then you can read/save out the .lib file.

 

by: apostrophe27Posted on 2009-09-30 at 10:31:07ID: 25461203

The dl (dll "a") I'm writing is going to be distributed to systems that may not have the other dll/lib (dll "b") files installed. I don't want to distribute .lib "b" as a separate file.

The software is for in-house use only. dll "b" adds some new functionality that wont be used by everyone, but there is additional new functionality in dll "a" that everyone will use.  I want to make make my .dll compatible with older setups without changing the way people are used to upgrading to the new version. The usual upgrade path is to just copy the new version of the dll over the old one.  

Anyway, I want to embed it as a resource. How do I do that?

 

by: jkrPosted on 2009-09-30 at 10:32:39ID: 25461215

You can embed any kind of file in a DLL as a binary resource (RT_RCDATA).

 

by: AndyAinscowPosted on 2009-09-30 at 10:36:37ID: 25461261

If you do wrap the lib file inside the other dll that AFAIK won't expose any of the functionality of it - in other words the new functions will NOT be useful for the other users.

20120131-EE-VQP-002

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