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Questions tagged [com-callable-wrapper]

8 questions
39
votes
2 answers

How to diagnose COM-callable wrapper object creation failure?

I am creating a COM object (from native code) using CoCreateInstance: const CLASS_GP2010: TGUID = "{DC55D96D-2D44-4697-9165-25D790DD8593}"; hr = CoCreateInstance(CLASS_GP2010, nil, CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER, IUnknown, out…
Ian Boyd
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21
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1 answer

Calling a .net library method from vba

I have developed a web service in ASP.net, c#, and hosted on IIS, which is to be consumed by a vba client. Having downloaded the Office 2003 Web Services 2.01 Toolkit, I encountered a problem in successfully creating the proxy classes required (as…
user1012598
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8
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1 answer

"COM object that has been separated from its underlying RCW cannot be used" with .NET 4.0

I've a class in my .NET 3.5 C# WinForms application which has five methods. Each method uses different sets of C++ COM interfaces. Am using Marshal.FinalReleaseCOMObject for cleaning up these COM objects. This code works fine on this .NET platform…
user74042
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4
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0 answers

Debugging source code of COM interop assembly / wrapper

Normally when you reference a COM DLL in a C# project Visual Studio automatically generates the runtime-callable wrapper (RCW) and compiles it to an Interop. assembly. Is there any way to debug into the source code of the RCW? Approaches I am…
StayOnTarget
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1 answer

Is it safe to use the COM Callable Wrapper to avoid problems passing GCHandles across app domains?

In .NET, there's a relatively well known problem with storing managed objects in unmanaged code as gcroot to provide callbacks from the unmanaged code: the unmanaged code doesn't know what AppDomain to use when calling into managed…
Ganesh Sittampalam
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Debugging .NET assembly loaded from VC++ app using CCW

I apologize for the vague subject, but I'm inexperienced in this area, and couldn't come up with something more specific. I am debugging a third party application (written in VC++ 2005) that loads COM plugins. My plugin was written in C# 4.0. When…
Dave
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COM Callable Wrapper works in .NET 2.0 but not .NET 4.0

I have written a proof-of-concept COM Callable Wrapper in order to replace an existing COM component with new functionality. A constraint of my project is that I cannot change the calling code; the calling code should be ignorant of the presence of…
Mark
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Deploy a COM Callable Wrapper

My group has created a .NET assembly and it works great in our VB2010 projects. We have also made some of the functions available to VB6 and thus have created a COM Callable Wrapper. We have tested this also and that works great. Our last step is to…
sinDizzy
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