[Winpcap-users] Entry Point in a DLL

[Gianluca Varenni]

WinPcap can be used within a C++ application without any problem, you don't need extern "C" or similar stuff. 

What is the exact linking error you are encountering?

Have a nice day
GV
  ----- Original Message ----- 
  From: George S. Lockwood 
  To: Tom at redtile.com ; winpcap-users at winpcap.org 
  Sent: Saturday, August 05, 2006 11:28 AM
  Subject: Re: [Winpcap-users] Entry Point in a DLL


  Hello Thomas,

  I think I'm trying to do something similar but with a standard library I (think) am statically linking.  I'm getting link errors about unresolved externals.  I am try to build the wpa_cli into a class. 

  I think my problem is about a class (cpp) file not understanding a lib build from straight "C" and thereby not finding a c style functions.

  Either I'm getting forgetful (very possible), or involved with .net too much too recently to remember (also possible) that I'm forgeting the way to link C-style functions into a cpp module and call those external functions. 

  What am I forgetting?? Or am I forgetting that it is impossible.  I thought I needed to declare the externals with something like __decl or with "C"    inside the cpp file???????




  thanks for any of your ideas, 

  george


  On 8/3/06, Thomas O'Hare <Tom at redtile.com> wrote:
    Hello All!

    I am using Dev-C++ in C++ mode to try and create an entry point into my
    own DLL's based on the WinPCap Libraries.  I need to export several of
    my own functions to languages that do not inherently support C typed 
    structures.

    I am looking for the cleanest, fasted way to create an entry point for
    my functions so I can use the DLL as a true library for the programming
    languages lacking native structure support.

    I can open DLL's in these languages and call functions, but especially
    "chained" (Next) structures are very very tricky to work with in any
    language that does not have native support for C typed structures. 

    Any docs, resources, suggestions, etc, are welcome.
    --

    Thanks,
    ~ Thomas O'Hare ~
    President, RedTile, Inc. - DBA: RedTile Software
    Web, Wireless, Network, Database & Systems Software
    +1.407.295.9148 ; +49.8651.717950 ; http://www.RedTile.Com/
    Operations Manager; Virtual FoxPro User Group
    Tom at VFUG.Org ; http://www.VFUG.Org/
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