Unable to find an entry point named FUNCATIONNAME in DLL DLLNAME

[Saman]

I have a third party dll and I am sure that it is not an activeX or dotnet
assembly .
I have check it up with Dependency Walker software and found the list of
it's exported function in C++ syntax
for example :

void __cdecl TelEnd(void)
void __cdecl FaxStop(void)

and so on ...

I can not call them from VB/VB.NET and I received the following error
message
" Unable to find an enry point named FUNCTIONNAME in Dll DLLNAME "

I use the following declaration :

Declare Sub TelEnd Lib "......\MultiFunc.dll" ()

what is wrong with that?
Thanks
Saman

[Mohamoss]

Hi Saman
If you just add reference to the dll may be try to use DIIimport
http://msdn.microsoft.com/library/de...us/cpref/html/
frlrfSystemRuntimeInteropServicesDllImportAttribut eClassTopic.asp
Mohamed M .Mahfouz
Developer Support Engineer
ITWorx on behalf of Microsoft EMEA GTSC

[Saman]

Hi ,
Thanks Mohamed

but there is no difference , I tried your hint as following but the error
message is still the same
<System.Runtime.InteropServices.DllImport("C:\Prog ram Files\PANA
LINK\MultiFunc.dll", EntryPoint:="TelEnd", SetLastError:=True,
CharSet:=System.Runtime.InteropServices.CharSet.Un icode,
ExactSpelling:=True,
CallingConvention:=System.Runtime.InteropServices. CallingConvention.StdCall)>
Public Shared SubTelEnd()

End Sub

and the error is
Additional information: Unable to find an entry point named TelEnd in DLL
C:\Program Files\PANA LINK\MultiFunc.dll.
"Mohamoss" <mo************@egdsc.microsoft.com> wrote in message
news:gA**************@TK2MSFTNGXA02.phx.gbl...

Hi Saman
If you just add reference to the dll may be try to use DIIimport
http://msdn.microsoft.com/library/de...us/cpref/html/
frlrfSystemRuntimeInteropServicesDllImportAttribut eClassTopic.asp
Mohamed M .Mahfouz
Developer Support Engineer
ITWorx on behalf of Microsoft EMEA GTSC

[Mattias Sjögren]

I have check it up with Dependency Walker software and found the list of
it's exported function in C++ syntax

Make sure you turn off the Undecorate C++ Functions option to see the
actual exported name of the function.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
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