Win32 DLL def file question

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

Hi

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

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]

Re: Win32 DLL def file question

Kid wrote:

Hi
>
How can we export Win32 dll functions for dynamically LoadLibrary and
GetProceeAddres s ?
>
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(dlle xport)

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

--
Cholo Lennon
Bs.As.
ARG

[Ben Voigt [C++ MVP]]

Re: Win32 DLL def file question

Cholo Lennon wrote:

Kid wrote:

>Hi
>>
>How can we export Win32 dll functions for dynamically LoadLibrary and
>GetProceeAddre ss ?
>>
>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(dlle xport)

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]

Re: Win32 DLL def file question

"Joseph M. Newcomer" <newcomer@floun der.comha scritto nel messaggio
news:bsdm945u2u clatq424m5q3iml qt1h43ig0@4ax.c om...

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/library/zxk0tw93(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]"
<rbv@nospam.nos pamwrote:
>

>>Cholo Lennon wrote:

>>Kid wrote:
>>>Hi
>>>>
>>>How can we export Win32 dll functions for dynamically LoadLibrary and
>>>GetProceeAdd ress ?
>>>>
>>>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(dlle xport)

>>
>>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: newcomer@flound er.com
Web: http://www.flounder.com
MVP Tips: http://www.flounder.com/mvp_tips.htm

[David Connet]

Re: Win32 DLL def file question

"Ben Voigt [C++ MVP]" <rbv@nospam.nos pamwrote in
news:OxLGptJ#IH A.2060@TK2MSFTN GP05.phx.gbl:

Cholo Lennon wrote:

>Kid wrote:

>>Hi
>>>
>>How can we export Win32 dll functions for dynamically LoadLibrary
>>and GetProceeAddres s ?
>>>
>>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(dlle xport)

>
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(dlle xport) 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_cas t<GETMYINTERFAC E>(GetProcAddre ss
(m_hDllInst, "GetMyInterface "));

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

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