Re: [Dev-C++] Is a struct preserved when used into a cpp file?

[Cassius V. de M. <cvi...@uo...>]

> 
> ---------- In=EDcio da mensagem original -----------
>      De: Per Westermark <pw...@ia...>
>    Para: Vinicius <cvi...@uo...>
>      Cc: dev...@li...
>    Data: Tue, 27 Jan 2004 16:37:43 +0100 (CET)
> Assunto: Re: [Dev-
C++] Is a struct preserved when used into a cpp file?
> If the MD5Init function is implemented in C, you should modi
fy the header
> file to specify
> 
> #ifdef __cplusplus
> extern "C" {
> #endif
> ...
> 
> #ifdef __cplusplus
> }
> #endif
> 
> To make sure that a c++ program knows that the MD5Init
() function should
> be called with the C calling convention, and that the name i
sn't mangled
> in the library, i.e. that the code should link with a symbol
 called
> _MD5Init
> 
> /Per W
> 
> On Tue, 27 Jan 2004, Vinicius wrote:
> 
> > Hello,
> >
> > a) I have a .h (header file) that declares a struct:
> > ...
> > typedef struct {
> >    UINT4 state[4];  /* state (ABCD) */
> >    UINT4 count
[2];  /* number of bits, modulo 2^64 (lsb first) */
> >    unsigned char buffer[64];  /* input buffer */
> > } MD5_CTX;
> > ...
> >
> > b) and I have .c (C source file) that uses the header abov
e:
> > ...
> > void MD5Init(MD5_CTX *context);
> > ...
> >
> > c) I have created a .lib (library file) with the functions
 above.
> >
> > I have used the header file above into a .cpp (C++ source 
file). The .cpp
> > file uses the .lib functions, but the compiles says "Unres
olved external
> > MD5Init(MD5_CTX*) ...".
> >
> > I think the .lib was included correctly on the project, so
 is a struct
> > preserved when used into a cpp file?
> >
> > Thanks in advance, Vinicius.
> >
> > PS: I'm using actually the Borland C++Builder 3 IDE for th
is project, but my
> > doubts is concerned about the theory, excuse me for anythi
ng.
> >
> 
> 

Yes, I did do this approach and worked sucessfully.
Thanks a lot, Vinicius.

 
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