Hello, I'm trying to use an ActiveX object from a c# project in Visual Studio 2005. I don't understand the difference between adding the .ocx file as a reference and adding the .ocx file to the toolbox then dropping it on a form. I can only get functionality working if I add it through the...more >>

I am using Visual Studio 2003 (Framework 1.1) with Windows Forms/C#. At some point my application executes a simple statement: string filename = Application.ExecutablePath.Replace(".exe", ".xml"); When I tested the applications under three different operating systems, it turned out that t...more >>

Hi guys/gals I'm not versed at all using p/invoke so I don't know how to fix this: Given this declarations: /**************************************/ typedef struct _SERVICE_STATUS { DWORD dwServiceType; DWORD dwCurrentState; DWORD dwControlsAccepted; DWORD dwWin32ExitCode; DW...more >>

I am converting one vs.net 2003 solution to vs.net 2005. The solution uses one old COM component through Interop. After migration, when I call the Interop wrapper for the old COM component, I got the following error message: Insufficient memory to continue the execution of the program. I re...more >>

Hi, I am trying to get an unmanaged C++ Shell Extension Handler to act as a COM client to a C# COM object. Since it is recommended to not do managed Shell Extension Handlers-- http://blogs.msdn.com/junfeng/archive/2005/11/18/494572.aspx --and since I prefer to program as much in C# as I can,...more >>

I have a simple managed C++ class that I want to call from unmanaged C++. Because of DLL Hell, etc I don't want to register it with COM (multiple apps will use this DLL), and because of the mixed-mode deadlock/loader lock I can't just export a function and call it (I'm using .NET 1.1). Tha...more >>

Is it possible to do interop in a mixed assembly in VS2005? I have an ATL COM object which I want to create and call from a managed class. Something like this:- // ManagedClass.cpp - compile with /clr #include "NativeATLComObject.h" // compiled without /clr public ref class Man...more >>

This code works in the VS2005 IDE using the built in web server, however when I run it on the same machine thru IIS it throws an error. It's suppose to loop thru all the task in a Microsoft Project file using C#. object oAP = objProj.ActiveProject; object prjTa...more >>

Hi I would be grateful if someone could point me in the right direction. I have a COM callable class. In that class I have binary data in a MemoryStream. How do I return that binary data to the caller? The calling language is VBS. Many thanks Jeremy ...more >>

Hi, I'd like to be able to read the positions of all the Icons on my WinXP desktop. I've had a look around to see how to do it and I've come up with the code below...but it doesn't work. :o( The x and y properties of my POINT structure are always zero. It seems the structure isn't gettin...more >>

Hello, In a managed application (c#) , I load an unmanaged dll (c++), but during the execution I need to re-init the dll many times, so I tried to free the unmanaged dll and reload it after, it seems to work only one time , has anyone an explication about potential side effects? let see the ...more >>

Hey everyone, I am running into a problem PInvoking a particular method I expose in a DLL, that basically configures and starts an ETW session (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/perfmon/base/consuming_events.asp). The basic method looks like this: __declspec...more >>

I am writing a script host in VB.NET by implementing hand written IActiveScriptSite and IActiveScriptSiteWindow interfaces on a class. IActiveScriptSite methods are called successfully by a VBScript engine, however IActiveScriptSiteWindow methods aren't. The consequence of this is that VBSc...more >>

Hi, I deploy .net enterorise servcies dll's to com+ use regsvcs. How can i do it such that i embedd the type lib into the dll. I saw /extlb switch but it doesn't take a path? Regards John ...more >>

Hello. I have a DLL written in C. In this DLL i need a function to modify a char * passed from a C# program inside a struct. I have reduced the code to only one struct with one char *, but when i try to call the funcion, i obtain this exception: "Cannot marshal field 'str' of type 'memmap': I...more >>

Hi What is the late binding equivalent of the below code? Many Thanks Regards Dim O As Outlook.Application Dim F As Outlook.MAPIFolder Dim iCon As Outlook.ContactItem Dim oContact As Outlook.ContactItem O = New Outlook.Application F = O.Session.GetD...more >>

According to the Excel manual, there are three variants of the Copy() method that applies to Chart objects (and others): Syntax 1: expression.Copy - copied to clipboard Syntax 2: expression.Copy(Destination) - copies range Syntax 3: expression.Copy(Before, After) - duplicates...more >>

well I am making progress. . . Here is where I was going with this. . . I want an ASP.NET application to fire the event. I want users to be able to run an app and get a real-time view of certain activities. with these set in the COM+ Event Class assembly: <Assembly: ApplicationActivati...more >>

We're having some confusion regarding whether it's legal to generate and distribute IAs for Office 2000. We would be only deploying them to our application directory since we want to support XCopy deployment, and the information up on the Microsoft and MSDN sites is rather... indirect, and also ...more >>

Hi, How would one go about accessing the Application.NormalTemplate.Saved property in Word via C# and LATE bound? I'm currently getting the infamous "do you want to save Normal.dot" error on certain systems from the following code (it seems to be from fresh installations of Word, since some...more >>

Sorry, this one is complicated. I have a normal (completely non-Managed C) C++ app that uses MFC. This app calls: CorBindToRuntimeEx(L"v1.1.4322", NULL, STARTUP_LOADER_OPTIMIZATION_SINGLE_DOMAIN, CLSID_CorRuntimeHost, IID_ICorRuntimeHost, &ppv); Once started, it does a LoadLibrary on ...more >>

Hi guys, I'm having a hard time to subscribe to a native event in C#.NET. The application I'm writing should be able to detect changes in DHCP parameters. This is done through the following: DWORD APIENTRY DhcpRegisterParamChange( DWORD Flags, LPVOID Reserved, LPWSTR AdapterName, ...more >>

Hi! I'd llike to encapsulate a C function with signature: char * foo(char * bar) How would I call this function and how do I free the memory pointer which is returned? TIA! mortb ...more >>

Hi, I'm getting the above Exception when trying to call SaveAs() on a Wb, I've got open. I can call Save() no problem, but wanted to set Filename, etc... Very new to programming Excel with C#, so not sure what this is about. Can anyone help. This is the line causing Exception. I defi...more >>

Hi All - Have a little problem that I hope someone can help with. I have a MT com .exe app that fires events (connection points) from a worker thread which is a COM MTA. It has been working fine with a VB 6 client. I am trying to port the client to VB.net but I am having problems. The event wi...more >>

The C# app consuming this Interop Assembly sees (for example) the read/write property Field as get_Field and set_Field. Is this normal? Here is the snippet from the interop assembly: <ComImport(), TypeLibType(4304), Guid("3D1A1824-7FE5-46B8-810A-85BC59BD95D3")> _ Public Interface tkResultR...more >>

Hi, I am new to VS2005 having moved straight from VB6. I need to create a VB2005 class library that is exposed to COM but am not having much luck. I have set 'Make assembly COM-Visible' in the Application->Assembly Information properties, and set 'COM Class' = True and 'COM Visible' = Tru...more >>

Hi! I'm trying to find out how to avoid having to manually declare all of the WinAPI C functions and structs before using them in VB.NET. I'm getting familiar with VB.NET 2005 and thought I should start by doing a copy of a little program I made in C++ years ago. That program used a lot ...more >>

Is it possible to debug from an ASP page into a .NET assembly it's calling through COM interop? Thanks, Zoe ...more >>

Anyone that has an idea of how to invoke the DeleteProfile function from UserEnv.dll through P/Invoke is greatly appreciated. I cannot see to find any example anywhere on the web of how to import this function. Based on the original C prototype it seems like it should be very easy to import, ...more >>

In Windows Media SDK Help to initialize IWMPSyncServices we using m_spPlayer->QueryInterface(&spSyncServices); But how can initialize IWMPSyncServices in C#. I tried to do in such way IWMPSyncServices ss = (IWMPSyncServices)Player; but ss comes null. How to do? Thanks! ...more >>

I'm using .NET 2.0 and have a remoted class hosted in IIS 6 that is attempting to access a DCOM'd object running on a Windows Server 2003 SP1 machine. Windows Integrated authentication is enabled in IIS and I have verified that Kerberos is enabled and working. Additionally, I have verified ...more >>

I have an application where I need to pass the data in a COLEStreamFile object to a method of a .Net class which accepts Stream*. I had implemented the solution specified in the following article in my application http://support.microsoft.com/default.aspx?scid=kb;en-us;321340 But it doesn't ...more >>

I am trying to automate a build. We first build COM dll's, register them, then we want to create interop dlls so we can use them in .NET (v1.1). When we add a reference to a COM dll in Visual Studio, we get a series of interop dlls named: Interop.iboSubscription.dll, Interop.iboContentManag...more >>

I've a problem using multithreading and MTS. I'm using framework 1.1 Basically I want, from the Main Thread , to start a (distributed) transaction. then I want to start 2 new threads to perform some Database operations, each thread will do some work on the DB using its own SQLConnection. I w...more >>

Goodafternoon, This is probably a silly question, but it is my mind all the time. In the meanwhile i'm using VB6. I'm using a Financial Application which you can register as a COM server. And then, in Visual Basic, you just go: Set objFinApp = CreateObject("FinApp.application") objFinApp...more >>

I am getting "An event was unable to invoke any of the subscribers (Exception from HRESULT: 0x80040201)" on what appears to have been a properly subscribed transient event. I have an Event Class in a signed library, LceEvent.dll, registered in COM+ via regsvcs LceEvent.dll ...more >>

hi, I found a good VB6 class to parse VBS IFO Files from a DVD movie.... here : http://forum.doom9.org/showthread.php?t=50552 I tried to convert it to VB.NET....I made more than a half of the work...but I'm stuck here is my conversion : http://pwp.netcabo.pt/falmartins/vb_net_cls...more >>

Hi all, I'm calling a win32 function from C# that returns a far pointer to an array of data. The looping in C goes like this: pSint8 = (char* )pData; pSint16 = (Int16*)pData; pSint32 = (Int32*)pData; pFloat = (float*)pData; for (j = 0 ; j < numb ; j++) { switch (DataType) { ...more >>

Hi NG! Is there any way to get a hand on the scroll buttons of the TabControl, those that appear at the right of the TabPage headers when there is not enough room and the Multiline property is set to false? How to change the aspect of these buttons? Thanks in advance. pax ...more >>

Greetings, I am using a third party COM DLL which is not thread safe. I need to be able to make several instances of objects in that DLL using threads from an ASP.NET application without getting deadlocks/problems. I tried using Application Domains but still got thread deadlocks. Then I ...more >>

Hi I'm working on an application, which calls Photoshop from .NET using Interop. Sometimes however, an error occur and Photoshop displays a Dialogbox, waiting for the user to take action, before the program continues. Is there a way to setup some kind of timeout on a Interop method cal...more >>

Hi, I have a written a DLL in C myself, and I want to use it in my C# app using P/Invoke. Two functions are returning an array of structures which are containing a "char[]" field of known size. I tried to write a P/Invoke code in C#. but I get an error when I run the application... ...more >>

Is there any new 2.0 class that offers the functionality of the ActiveDS NameTranslate function as below? I would like to not have to use COM interop to do this. Thanks, Dave Kolb // convert the Netbios style "domain\user" name to an LDAP DN format ActiveDs.NameTranslate nt = new Activ...more >>

If you create a new VS.Net 2005 Windows application, add no code at all, but add a reference to the COM "ActiveDS Type Library" and "rebuild all" more than once you get 39 warning messages. I have found no workaround for this and it affects my project I am converting from VS.Net 2003 to the 20...more >>

Hello, I have an MC++ class exposing a COM interface ISrv. MC++ class also has a source interface, ISrc. ISrv has below method: void AttachSink( [MarshalAs(UnManagedType::IUnknown)]Object* pSrcUnk, Int32 *pError, Int32* pState); I have MFC sink class (derived from CCmdTarget) and imple...more >>

Hi, I'm in the middle of a project to write some COM-visible classes in a .Net dll but I'm having problems getting a particular class to expose the correct name. The issue is that I've got two identically named classes in different namespaces inside a single project. Even though only one...more >>

Hi I'm using a simple wrapper class which I orginally developed with .NET 1.1. I've recently added it to a .NET 2.0 class library which is then referenced from an ASP.NET 2.0 "project" Although the code compiles without any problem, I get the following exception message when creating a ...more >>

I'm still trying to get my .NET .dll recognized by my VB6 COM object on the web server. It worked on a different web server, but I can't remember all of the steps we did to get it working there, and obviously I've missed one on the new server. I copied the .NET dll to the directory where m...more >>

I wrote an ActiveX UserControl in C# language. My problem is write a Managed Server as the event source and for example write a COM Client as the event sink. The managed server declares SampleEvents as an event sink interface and connects the interface to the SampleControl class. The unmanaged c...more >>