I am new to COM as well as to .Net COM interop. I want to expose a .Net
class(lets say (lets say A::ClassA) of an assembly (A ) to COM with a method
that returns an Object of another .Net class(B::ClassB). The problem is
ClassB has been defined in another assembly (B) that the ...

I am trying to create a journal record hook in C#. According to
http://www.codeproject.com/tools/winmacro.asp
I do not need a DLL for it. Creating a Journal Playback hook works (although
I don't have anything to play back yet), and creating the Local Message Hook

I have an old C++ GUI Application CPPAPP.exe that calls a C DLL
library RULE.DLL through a C++ class wrapper LoadRule.CPP.
Now I need to call the C DLL RULE.DLL from C# GUI application
CSAPP.exe. I need help to convert LoadRule.CPP to a C++ BridgeDLL or a

I am working on a project that includes creating a PDF file by hand using a
predefined font.  The PDF reference requires certain font metrics be
included.  Using the FontFamily class, I have access to a few, but the
majority of them aren't available.  Therefore I'm attempting to ...

I'm trying to figure out how some stuff can be done when calling
functions in a native DLL from managed C++ and the called functions
have callbacks. What I want is to be able to use an opaque type as a
handle for the user of the DLL, in this case it's called Test and the

my VB6 code says :
Dim ctlDynamic As Object
Private Sub Form_Load()
   Set ctlDynamic = Controls.Add("stlOperators.stlOperator", "stlOp")

I created ATL dll in vc++. One of the function has datatype as WCHAR*.
I am rferring this dll in .net, .net automatically converts this to interop
dll and the signature for the method WCHAR* is changed to ushort.
I actually have a string in WCHAR* variable. since it is ushort in  ...

We want to determine whether it's possible to develop a .NET COM-
callable wrapper (CCW) which exposes complex types that are accessible
to a VBScript client.  We have found that VBS has no problem accessing
'simple' types like integer, String, Boolean.  On the other hand, we

In an earlier post I received a perfect solution to use a visible VbNet
USERCONTROL
in VB6 and get the intellisense. I'm rewriting the answer I got beneath my
new question which is =>

What is the equivalent of "void*" in managed C++ ?
Thanks.

I'm getting an OutOfMemoryException when calling a native method.
The same program and library are working on the big .NET Framework 2.0 but
not on the Windows CE 4.2 that I have.
The exception is thrown at the level of P/Invoke because it's when I call

I'm having the following problem and I need some help from you:
I've a dll writen in C that has one function that has a parameter that's an
array  of structures of type T_MyStruct.
The structure T_MyStruct has just one field, being an array of 7 stuctures

I have a application that reads another application's text box.  I use
GetWindowText and GetWindowTextLength to read the text into my C#
application.  From time to time the call to GetWindowTextLength 'stalls' and
never returns.  It is not that it does not return a value, but ...

I have a crash; I know that crash is in the following code
0012d300 12d75f49 OLEAUT32!VariantClear+0xb1
It is because the VariantClear tries to release a COM Object that is
not long  valid.

The docs I've read aren't too clear about that.  Seems to me they should
work anyway.  That's what registration is for.
Also, I have successfully created a .NET DLL with a public class and public
default constructor and registered it but nothing shows in the object