Subj : Re: Link DLL using BCC32 free compiler
To   : borland.public.cpp.borlandcpp
From : Ed Mulroy [TeamB]
Date : Wed Aug 04 2004 07:25 am

One of two things:

- The C and C++ languages specify a main that does not have a calling
argument of 'void'.  Change to 'int main()'

- The function prototype:
> __declspec(dllimport) void __stdcall DLLFunction1(int num);
has a return type of 'void' meaning it does not return anything.
However you try to use a return value in this line:
> int ret_val=DLLFunction1(6);

You are using the command line tools from C++ Builder but are posting
questions to the newsgroup for the old Borland C++ compiler.  Post
questions about your compiler to newsgroups with 'cppbuilder' in their
name.

..  Ed

> Doug Martin wrote in message
> news:41109f2e$1@newsgroups.borland.com...
>
> How is a DLL linked to an application using the free command
> line compiler, BCC32 (version 5.5)? Both are written in ANSI C.
>
> For example, if MyDLL.c is:
>
> __declspec(dllexport) int __stdcall DLLFunction1(int num)
> { return(2*num); }
>
> It is compiled to a DLL at the command line using:
>
> > bcc32 -WD MyDLL.c
>
> to generate MyDLL.dll, MyDLL.obj. and MyDLL.tds. Then the lib
> file is generated using:
>
> > implib MyDLL.lib MyDLL.dll
>
> Both MyDLL.lib MyDLL.dll are added to the project directory. If the
application, named test_MyDLL.c is:
>
> __declspec(dllimport) void __stdcall DLLFunction1(int num);
> int main(void){
> int ret_val=DLLFunction1(6);
> return 0;
> }
>
> the compiler error is:
>
> Error E2468 test_MyDLL.c 3: Value of type void is not allowed in
> function main

.