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 "......\MultiFu nc.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/
frlrfSystemRunt imeInteropServi cesDllImportAtt ributeClassTopi c.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 .InteropService s.DllImport("C: \Program Files\PANA
LINK\MultiFunc. dll", EntryPoint:="Te lEnd", SetLastError:=T rue,
CharSet:=System .Runtime.Intero pServices.CharS et.Unicode,
ExactSpelling:= True,
CallingConventi on:=System.Runt ime.InteropServ ices.CallingCon vention.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.microsof t.com> wrote in message
news:gA******** ******@TK2MSFTN GXA02.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/
frlrfSystemRunt imeInteropServi cesDllImportAtt ributeClassTopi c.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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