Can I use P/Invoke to obtain a C++ class type contained in a dll? I know how
to get structs and how to pass classes as parameters to native code but how
do I get C++ unmanaged classes from a native dll using P/Invoke?
Thx!

we have a big project with C# and MCPP mixed assemblies. Is MCPP still
supported in VS2005? Do we have to change something in MCPP?
With best regards,
Boni

I have following line in AssemblyInfo.cpp file:
[assembly:AssemblyVersionAttribute("4.0.4000.29")];
When I build managed application, FileVersion column in Windows explorer is
empty.

I'm new in the .net environment.
How can I get the current version, from my own created assembly, [assembly:
AssemblyVersion("6.60.0.10")] ?
Thanks Thomas

it's been awhile since I've done any real C++ development, but I'm trying to
create a managed interface to some COM libraries that don't implement
IDispatch or come with type libraries, so that pretty much means C++.
I have a managed class, MainClass, and an unmanaged class ...

i create a webservice and added my old .h and .cpp files.
it compiles fine but gives me a runtime error...
System.NullReferenceException: Object reference not set to an instance of an
object.

In VisualStudio 6, there is a place allows developer to implement mapping of
windows message and its handler easily under View -> ClassWizard. For
example, I can map WM_TIMER to my own handler function using this feature.
Just wonder, is there similar feature in .net ? I could not ...

I need to use WIA (Windows Image Acquisition) from managed C++.  Is there a
"new and improved" way to access WIA from managed C++ (i.e., through .net)?
Or, is it the same COM calls as from unmanaged C++?
If it's the same COM calls, is there a "new and improved" way to access COM

can somebody tell why I get 103 errors
with /clr and none with /clr:oldSyntax
when I include the dshow header file.
I would like to use the new syntax.

I don't know if this is the right place to show my question.
I can't understand why, in the BMP array after the headers, i find some zero
that aren't in the real BMP image. This zero are at the end of a single pixel
row. Sometime i find three zeros. I've seen, in a web page, that ...

I am fairly new to developing code in VC++, so please bear with me.  I have
an application developed in  a previous version of VC++.  The project will
open fine in the old version.  However, when I try to open it in VC++ .NET
2003, I get the following error:

I use vs2005beta2 and create a new ATL COM project.
The vs2005b2 create a  COM dll for my project successful, but there only
.RGS file in \release folder.
My question is how to register the COM dll which created by vs2005B2?

I have a working 6.0 project.  unicode, mfc in static library, WinMain
is the entry proc ...
I open the project in .NET, it is converted ok, now in the build I am
getting errors.

I am using Visual Studio .net 2003 (C#)
I have a line of code like:
messagebox.show("Hello");
I get the erorr message "The type or namespace name 'messagebox' could not

When it comes to Win32, Visual Studio .NET 2005 Express Edition Beta 2
only allows the creation of console-based applications. What if one
wanted to create MFC-based applications and, at the same time, be able
to take advantage of the powerful and conforming C++ compiler that ...