The example to make the dll call work in vb is like this:
sAnswer = oleOldObject.Request(Array("CODEZ", "LARRY", "JONES", "00"))
The interop has described the method this way:
public abstract new System.Object Request ( System.Object sMessages )

I have converted a couple of C++ structures to C#.
/*
typedef ULONGLONG BTH_ADDR;
typedef struct _BLUETOOTH_ADDRESS {

I have to marshal LINEDEVCAPS structure for TAPI in the call to
lineGetDevCaps.
[DllImport("Tapi32.dll",CharSet=CharSet.Auto,EntryPoint="lineGetDevCaps")]
private static extern uint (int hLineApp,uint dwDeviceID,uint dwAPIVersion,

I am using Windows Forms and C# to access a COM object.  The COM object
(“tablet” in the code examples below) requires a window handle.  I am using
the form handle (this.Handle) to pass to the COM object.  I had assumed that
I would have to use a GCHandle to pass to the COM ...

I have a c# program that instantiates a C++ COM server program.
I then try to call a method on the server object and get the following:
An unhandled exception of type 'System.InvalidCastException' occurred in
mscorlib.dll

I am fairly new to COM, but have been using C# for quite a while.  What I am
looking at doing is to create a DCOM Server for a client which is already
written.
I have all the interfaces required, my question is how do I create these

I am attempting to call a function on the RightFax API from VB.NET.  The
original declaration for the function in VB 6.0 is:
Declare Function RFVB_SendFiles1 Lib "RF2VB.DLL" (ByVal hServer As Long, _
                                                 ByVal lFI10Object As Long, _

I go through the following steps which work on my development machine,
but not on the production web server.
I create a simple hello world style C# dll.
I put it in my system32 folder

I have seen that MS has published PIA's for Office XP (2002), anyone knows
if they (or some other company) have also published PIA's for Office 2000 ?
Or may the PIA's for Office XP also be used for Office 2000 ?
Perhaps possible to do myself (by using tlbimp and appropriate ...

My story is : A third party application is extensible using the Windows DLL
interface. It defines a well-formated import/export DLL interface to
commuicate with the extensions. The extension is required to implement all
these DLL interfaces to be able to plug into the ...

Stupid question, but where exactly is the Word (2003) interop DLL
located? I've installed the .NET Programmability Support in the Office
setup and Microsoft.Office.Word.Interop is listed in the GAC - but
where's the DLL so I can reference it from my VS.NET project?

I would like use TAPI 2.0 with pinvoke is it possible?

I have got an Interface method that takes a void*. Dot Net interprets it as a
System.IntPtr structure. I now want to pass a COM interface reference through
the IntPtr type. How can i achieve this???

I have written a C# executable, which I run regasm on to register it as a COM
class for use in some unmanaged C++ code.
Im the C++ code, I import the mscorlib.tlb and my .tlb file, declare some
interface variables, and start COM just fine... but when I try to get an

I have a .Net Com Server being called by an unmanaged c++ program.  They both
implement a common interface which passes a string by means of a double
pointer (c++  interface: [in, out] wchar_t**).
In the .Net Com server I am supposed to free the memory and allocate new