Re:VC DLL's and BCB
On Tue, 01 Sep 1998 10:03:23 +0200, Jan Ove Halvorsen
Quote
<Jan.Ove.Halvor...@hatteland.com> wrote:
>Hi!
>Can anybody tell me what a function declaration in VC should look like
>to be able to
>import it into a BCB application ?
>I have tried this:
>extern "C" __declspec(dllexport) BOOL __stdcall MBCGetStatus( PUCHAR St
>)
>{
> ...
>}
>Using implib and declaring the function like this in BCB:
>extern "C" __declspec(dllimport) BOOL __stdcall _MBCGetStatus( PUCHAR St
>);
>The application links ok, but when running it I get: Unable to find
>_MBCGetStatus in dll...
>Anybody out there that can give me some ideas ?
VC++ and BCB have different symbol decorations for __stdcall (MS is the one
going against the grain on this one). If you look at the DLL, you will
probably see the symbol
_MBCGetStatus@4
which is the way that VC++ decorates __stdcall symbols. BCB (and most other
compilers) makes the symbol look like
MBCGetStatus
So, you ask, what do you do? Run IMPDEF on the DLL. Now edit the .DEF
file, and change the line that has _MBCGetStatus@4 to look like
MBCGetStatus=_MBCGetStatus@4
which creates an alias. Now run IMPLIB on the DEF, which will create a BCB
import library. Add the LIB to your project, and voila, you're up and
running...
+----------------------------------------------------------------------+
| Jody Hagins |
| Automated Trading Desk "Fame is a vapor, popularity is an |
| 389 Johnnie Dodds Blvd, Su. 200 accident, and money takes wings. |
| Mt. Pleasant, SC 29464 The only thing that endures is |
| j...@atdesk.com character." |
| - O.J. Simpson, 1979 |
+----------------------------------------------------------------------+
