Win32 DLL def file question

[=?Utf-8?B?S2lk?=]

Hi

How can we export Win32 dll functions for dynamically LoadLibrary and
GetProceeAddress ?

I see VS MFC DLL project has a def file but Win32 DLL does not have one,
should we add a def file to VS Win32 DLL project , how can I do that ?

Thank you .

[Cholo Lennon]

Kid wrote:

Hi

How can we export Win32 dll functions for dynamically LoadLibrary and
GetProceeAddress ?

I see VS MFC DLL project has a def file but Win32 DLL does not have
one, should we add a def file to VS Win32 DLL project , how can I do
that ?

Thank you .

There is another method to export functions apart from def file: keyword
__declspec(dllexport)

http://msdn.microsoft.com/en-us/library/900axts6.aspx
--
Cholo Lennon
Bs.As.
ARG

[Ben Voigt [C++ MVP]]

Cholo Lennon wrote:

Kid wrote:

>Hi

How can we export Win32 dll functions for dynamically LoadLibrary and
GetProceeAddress ?

I see VS MFC DLL project has a def file but Win32 DLL does not have
one, should we add a def file to VS Win32 DLL project , how can I do
that ?

Thank you .

There is another method to export functions apart from def file:
keyword __declspec(dllexport)

But if you want control over the exported names (no mangling) then you must
use a .def file.

Simply specify the file you create under Project Properties -Linker ->
Input -Module Definition File

>
http://msdn.microsoft.com/en-us/library/900axts6.aspx

[Giovanni Dicanio]

"Joseph M. Newcomer" <ne******@flounder.comha scritto nel messaggio
news:bs********************************@4ax.com...

There are several ways to avoid name mangling, including using the
extern "C"
declaration in the header files and on the functions themselves.

Joe: if the function is __stdcall, the function name will be decorated as
MSDN documentation explains (also in "extern C" case).

http://msdn.microsoft.com/en-us/libr...93(VS.80).aspx
Note that you have to

use the extern "C" in any case because otherwise the C++ client will
mangle the names. So
a .def file is not necessary (I haven't used a .def file since Win16,
where they were
mandatory, and I do lots of DLLs where name mangling is suppressed and
functions are
exported)
joe

On Thu, 7 Aug 2008 09:44:29 -0500, "Ben Voigt [C++ MVP]"
<rb*@nospam.nospamwrote:

>>Cholo Lennon wrote:

>>Kid wrote:
Hi

How can we export Win32 dll functions for dynamically LoadLibrary and
GetProceeAddress ?

I see VS MFC DLL project has a def file but Win32 DLL does not have
one, should we add a def file to VS Win32 DLL project , how can I do
that ?

Thank you .

There is another method to export functions apart from def file:
keyword __declspec(dllexport)

But if you want control over the exported names (no mangling) then you
must
use a .def file.

Simply specify the file you create under Project Properties -Linker ->
Input -Module Definition File

>>>
http://msdn.microsoft.com/en-us/library/900axts6.aspx

Joseph M. Newcomer [MVP]
email: ne******@flounder.com
Web: http://www.flounder.com
MVP Tips: http://www.flounder.com/mvp_tips.htm

[David Connet]

"Ben Voigt [C++ MVP]" <rb*@nospam.nospamwrote in
news:Ox**************@TK2MSFTNGP05.phx.gbl:

Cholo Lennon wrote:

>Kid wrote:

>>Hi

How can we export Win32 dll functions for dynamically LoadLibrary
and GetProceeAddress ?

I see VS MFC DLL project has a def file but Win32 DLL does not have
one, should we add a def file to VS Win32 DLL project , how can I
do
that ?

Thank you .

There is another method to export functions apart from def file:
keyword __declspec(dllexport)

But if you want control over the exported names (no mangling) then you
must use a .def file.

Not necessarily. Inside my dll cpp file, I have:
extern "C" __declspec(dllexport) IMyInterface* GetMyInterface()
{
return new MyInterfaceImpl();
}

No def file in sight. (Well, actually there is - but there are no exports
in it - I think I just forgot to remove it after using the wizard to
create the project)

To get the interface:
GETMYINTERFACE func = reinterpret_cast<GETMYINTERFACE>(GetProcAddress
(m_hDllInst, "GetMyInterface"));

where GETMYINTERFACE (defined in the header with IMyInterface) is:
typedef IMyInterface* (*GETMYINTERFACE)();

Now, if you want to specifically export a function at a set ordinal (is
that still possible, or am I just having win16 flashbacks?), you need a
def file.

Dave Connet