Is it possible to set a field in a structure to be ignored by the
marshaler? I have a struct that needs to be self contained, but it
would require the use of fields extra fields to maintain it.
[StructLayout(LayoutKind.Sequential)]

I'm trying to use the MIDIInProc callback function associated with the
MIDIInOpen multimedia API function. Here are the function prototypes I'm
using:
Declare Function midiInOpen Lib "winmm.dll" (ByVal lphMidiIn As Integer,

I have successfully created Excel file programmatically by referencing
the Excel tlbs. Now when I deploy it our server I get the "COM object
with CLSID {00024500-0000-0000-C000-000000000046} is either not valid or
not registered" error.

I have been creating and asp.net application to build and XL 2003 work
sheet.  The declarations my app needs are different on XP vs. W2K Server.
Here they are:
'This syntax works with WindowsXPImports Microsoft.Office.Interop

On my main app form, I have a TabControl.
I want to create an assembly that contains the TabPages, and then
programmitcally add those TabPages to the TabControl.  That's easy enough.
But what I can't figure out is how to use the designer to design the

Hello iterop members,
I have an unmanaged app (exe) that calls a managed UI through COM
interop.  With the .NET 1.0 framework, this worked fine.  However now
when using vs 2003 and 1.1 problems arise as the application is

We have an VB.Net application that uses a COM automation server. There is an
object leak that we don't know how to solve.
objColl = autoServer.TheCollection
foreach objMember in objColl

hello group,
i'm tyrying to call into  a C Dlls and unable to get the results properly
after getting executed the functions.
I'm providing with all the code part:

Is it at all possible to use a .NET component from a COM object without
strongly naming the .NET component?

I have a vb6 com DLL (In COM+) that I am calling from DOTNET c# sharp.
I added a reference to the dll via the asp.net application.  The
application works perfectly.  The only problem is that the COM
component in COM+ spins forever.  It doesn't stop spinning, even when

I have a C++ (unmanaged) class named K in a DLL.
I create a managed C++ class named K in an other DLL that wrapped the
unmanaged one.
To refer the unmanaged one I use ::K and the managed one is in a

I have a C++ DLL which basically calls a legacy C library which
decrypts some data.
I have defined the DLL as below.
extern "C" __declspec(dllexport) void  __stdcall init()

We have a test environment in which we instantiate a COM/ATL/C++ component
from a Managed/Console/.NET/C# application. The COM component in turn
instantiates and calls a .NET/C#/Class Library component using Interop as
below:

I have a very small program that opens and reads data from an Excel XP
spreadsheet. When the user upgraded to Office 2003 my program stopped
working. I used Office XP PIA:s in the solution and I reckon I must add
Office 2003 PIA:s. But I don't have Office XP, so how can I add ...

Dear group,
I'm implementing an Asynchronous Pluggable Protocol.  For this I needed the
COM definitions of the interface IInternetProtocol, which in the shipped
headerfile is derived from IInternetProtocolRoot.  Because I wasn't able to