Subj : Re: Converting a VC++ DLL to BCW
To   : borland.public.cpp.borlandcpp
From : Wilbur
Date : Tue Dec 28 2004 11:03 am


Hi Ed,

I ran the Turbo Dump command as suggested and now I
have the text file, the header file, the DLL, and
a single symbol DEF file that I made in the past
(using IMPDEF).  But, I can not see any relationship 
between the text (dump) file nad the header file, so 
I have no idea what to add to the DEF file.

Is there an FTP site where I could send it so you could 
take a look at it?

PS:  I also have BCB V5.x if that would help.  (I 
usually prefer to use BCW when I working on a console 
program.)

Thanks for your help,
Wilbur

=========================================================
  
"Ed Mulroy [TeamB]" <dont_email_me@bitbuc.ket> wrote:
>If the DLL exports any C++ items that are classes or
>functions that accept arguments that are classes,
>pointers to classes or references to classes then
>you cannot use those items in the DLL.  Microsoft
>uses a different memory layout in their classes, a
>layout that is different from what Borland uses.
>
>If you have the DLL then you should have a header file
>that provides function prototypes for the items exported
>by the DLL.  Therefore you already know the source
>code names for the functions with their calling argument
>list and calling conventions.
>
>While the format used by Microsoft's tools in creating
>a DLL has evolved with time the tools you are using are
>from BC++ whose last edition was in early 1997.  They
>may not find everything in that DLL.
>
>Try this:
>
>Give a command like the one below and then manually edit
>the file containing the redirected output, inserting aliases for
>the functions shown into a module definition file.  Afterwards
>add the module definition file to the project.
>
>tdump -m c:\windows\system\msvcr71.dll >x.txt
>
>.  Ed
>
>> Wilbur wrote in message
>> news:41d154b4$1@newsgroups.borland.com...
>>
>> I have an 8KB VC++ DLL to convert to a Borland C++
>> library. I've tried the recommended IMPDEF/IMPLIB
>> conversion.  With IMPDEF I get only one symblo
>> (which I edited as required).  With IMPLIB I get a 1KB
>> library that does not work (externals can't be found by
>> the linker).  Help!
>
>
>

.