I'm working on a project (SDK 1.1) where we're automating Excel XP. We
have an ExcelService class which is responsible to maintaining Excel
object states and cleanup.  The class also acts as a sink for the click
events of several buttons that it creates in Excel Commandbars.

i am developing an  application which me to call c++ code from c#. basically
i have created idl for that in c++ and it worked fine. Now i want to pass
window handle to the c++ code. I got the handle then i am passing
Handle.IntPtr() to the c++ code. Basically in the c++ code i ...

I have some IL that I need to reassemble back into a primary interop
assembly.  I want my developers to be able to do this on their own, but I
don't want them to have the private/public key pair.  They have access to the
public key.

I'm trying to wrap calls the USPS Address Matching System API.
Am I missing something in my call to the API?
My calls to the API are declared as follows:
   <DllImport("zip4_w32.dll", BestFitMapping:=True,

I have a C++ .NET application where I need to place an IStream* into a
Byte[] and pass this back to a C# application.
Something like this I guess:
void MailAttachments::GetAttachmentBinary(MAPICDO::Attachment*

I'm writing COM to expose some unmanaged imagery generation functions to c#.
My question is how to best (easiest, clearest coding style) pass a managed
pointer to COM to receive back a loaded image:
example 1: using safearray

Can anyone tell me why the code below leaks?
Here is what I do:
1) create new AppDomain
2) create an instance of AppDomain2Class in it,

Could someone please help me to convert this IDL interface to a c#
interface. The thing Im having problems with is to convert the
different parameter types..
interface IComponentAuthenticate : IUnknown

how i can use vb6.0 dll in vb.net

I am once again trying to call a MC++ method from a C# method. I am building
with the command line, not the IDE. This is my build file:
cl /clr mc.cpp
csc /r:mc.exe /t:module csh.cs

Please note:  This is a repost.  It was necessary since my previous email
alias was not being monitored/managed.  Sorry.
Hello,
Once again, I am faced with the challenge of trying to send and receive

I am trying to get the font size of a running instance of WordPad (based on
Rich Edit). When I called the following function in my Windows Form which is
shown but not activated (SW_SHOWNOACTIVATE), WordPad crashed with the dialog
message - "WordPad MFC Application has encountered ...

Good Day All,
I have a series of Active X user controls that I am going to be needing to
use in a .NET project. However, I am running into an issue with the Wrapper
that is generated for the controls. All of these controls expect that their

I'm creating a Powerpoint Application object for use in Powerpoint
automation (Powerpoint 2003) like this:
Type t = Type.GetTypeFromProgID("PowerPoint.Application");
object app = Activator.CreateInstance(anApplicationType);

Symptoms:
Building a .NET 2003 solution with "Register for COM Interop" set to
TRUE causes the error [...can not load required library MSCOREE.TLB]
My Cause: