I have a C++ DLL that accepts BSTR* and changes its value before returning. I am calling this API from C#. I get changed value in Object[] but not in actual variable. Please see my code snippet to understand. C++ DLL API:- void Fun(BSTR* data) ; C# wrapper:- [DllImport("Test.dll", EntryPo...more >>

Hi I have some existing unmanaged MFC/C++ application in VS2005 and VS2003. I need to modify these apps to call methods already implemented in an existing C# class library/assembly (retrofit some new functionality) and redeploy the application. From doing some reading on this I believe...more >>

Hi, We are trying to implement COM inside our .NET c# application, that needs to be called from a C++ app. While we can get the properties and methods to work just fine, the C++ client has an issue with the events. The C++ client can see and register interest in the c# event just fine, ...more >>

Hi! We are using DSOFramer to host MS Word within our WinForm-based smart client app. Anywhere in our app, pressing F1 raises our context-sensitive help dialog. When our users are inside MS Word within our app and press F1, we bring up a Help dialog that explains what they should be typi...more >>

This is part of my assembly: [assembly: ComVisible(true)] [assembly: ClassInterfaceAttribute(ClassInterfaceType.None)] // The following GUID is for the ID of the typelib if this project is exposed to COM [assembly: Guid("cd099def-f9fb-407f-b793-9db68f6b8a0b")] This is my code: u...more >>

Hi, I want to marshal the following C++ struct to a managed callback function: struct CALLBACK_DATA { LPBYTE pArray; // byte array UINT uArrayLen; // byte count }; The C++ function expects the following callback type: typedef BOOL (CALLBACK *CALLBACK_FUNC)(...more >>

Hello, Say I have an interface from IUnknown::QueryInterface that I want available in my .Net program. When QueryInterface returns, I am responsible for Release()ing it, but depending on whether GetTypedObjcetForIUnknown has already wrapped that object, it may or may not increase the refe...more >>

Hi, I try to create a COM Dll in C# 2005 Express that implement a COM interface (Wealth-Lab real time data adapter API). I succeeded in creating a dll for the Wealth-Lab COM interface to implement. Though, after tlbexp is run with following code, nothing is published in the tlb file (see it'...more >>

I have two small apps which are deployed to the same directory. They each reference IWshRunttimeLibrary (Windows Script Host Object Model.) The problem is that the Interop.IWshRuntimeLibrary.dll generated by one project errors when used by the compiled assembly from the other project. I compile ...more >>

I have a library written in C# that raises events that are consumed by a VB6 client. The library is registered on my development machine using the /tlb option on regasm.exe to allow me to create a reference in VB6, and the events raised are picked up by VB6. I've discovered through a long,...more >>

"The CLR has been unable to transition from COM context 0x1b78c0 to = COM context 0x1b7a30 for 60 seconds. The thread that owns the = destination context/apartment is most likely either doing a non pumping = wait or processing a very long running operation without pumping Windows = messages. T...more >>

Hi I want to call Authorization Manager (AzMan) in my .Net 2.0 application. The PIA that is available in the Windows 2000 Authorization Manager Runtime is a .Net 1.0 assembly. Is there a new PIA for .Net 2.0? If not should I use the .Net 1.0 PIA or should I create my own interop assemb...more >>

I have a legacy COM application that has PIA's for it's DLL's that are registered in the GAC. In VS 2003, I would add a reference to my project by browsing to the DLL file in the install directory of my legacy app, and it would automatically refer to the version in the GAC (this is good). In 2...more >>