In managed c++, what is the most efficient way to copy the contents of a native buffer (BYTE*) to a managed stream? thanks scott ...more >>

Hi there, I have written a COM enabled .Net 2.0 library which works fine on the machine that I wrote it on. However, when I deploy it on a customers 2003 server and try and use it, I get the following error: The remote server machine does not exist or is unavailable. Why do...more >>

Hello ! I have a big problem : i want to use the MapPoint 2006 activeX with WPF .... and it doesn't work :( The MapPoint ActiveX is embeded in an usercontrol, I put this user control in my WPF window thru a WindowsFormsHost. When i launch the application on Windows XP, it works ! But no...more >>

I have a COM server executable, written in .NET. I exported a type library and registered it. So now I can create an instance of the component using CreateInstance from non .NET code. That works fine. I can also get hold of the instance by calling GetObject from non .NET code. So at this...more >>

Hello, is there any way or documentation to access windows defrag API for ntfs from NET ? thanks ...more >>

Hi... We've got a mix of old legacy code and new versions in various states of porting being used in our system. One of the objects ported to C# and then exposed back to the legacy code as COM takes a pointer as a parameter. The use of the pointer is opaque (kind of like HANDLE); we're ...more >>

Hello, I will get a compiler Error when trying to implement an interface, using ActiveX-types as parameters in VB.NET. I will explain the problem with ActiveX-ADODB v2.8 but, i can reproduce the bevaviour with a selfwritten dummy activeX-lib. DETAILS - Two VS2005 Projects: A and B. - Both...more >>

Hi I'm trying to use COM, written on vb6 from inside webservice(C#). I put reference on my dll, creating interop. in bin folder. Then I have something like this Using Intelex; .... public Intelex.Application mApp; public Intelex.IDD mIDD; .... Intelex.Application mApp=new Int...more >>

I have a DLL that takes a pointer to a callback function of type: typedef void ( __stdcall * StdMyCallback_T)(void* context, const char * sName, bool bState, EError error, const char * pErrorMsg); I have defined a delegate as such: public delegate void MyCallbackDele...more >>

In a DLL written in C#, how can you get the handle of the main window of the app that called you? Thanks, Mike...more >>

In coping data between managed and native code, I make use of the Marshal class methods, ReadInt32, Copy, StructureToPtr, etc. However, I also want to copy Double and Single values, but given that there's is no ReadSingle and ReadDouble, what's the best way to do the copy? Thanks Peter. ...more >>

I am developing COM addIn for excel 2003 using C# and .Net 2.0 interop. In the code I am sibscribing to excel events like open, activate, etc. It looks like it causing problem with any VBA addin installed that uses same events. For example if you have "Lookup Wizard" addin from Microsoft - af...more >>

Hi, I'm using VS2008. I trying to create an Outlook 2007 add-in. After making a very small and simple Outlook test add-in, I wan't to try an publish it, so I use the Publish feature of VS2008. But when my clients installs the add-in, it is not showing up in Outlook 2007. Hmmmm ... is...more >>

Did anyone ever need to know if your application is being run inside a remote desktop session? I have an application written in .Net 2.0 And I need to know if that application was started inside of a remote desktop session. Are there any win API calls I can call to find out if this is the cas...more >>

I have googled this quite a bit and I just can't find the answer. I need to read the state of a radio button in another process. Not much is known about the other process, other than the fact that it was created with .NET controls. I have read on various forums that SendMessage(conrolhandle...more >>

I'm using C# in VS2005 and having a problem when I implement a custom marshaler and I call a reference type by ref. Any help greatly appriciated. I'm using ICustomMarshaler because of the structure contents I'm trying to marshal. The sample code that follows doesn't show that structure, b...more >>

Hi, I need to write a ComVisible object in C# and there are some methods that must return a multidimensional array of strings. I created a .NET assembly, marked it COM visible, created a TLD via regasm and added it to the GAC. I can now create instances and execute code, but I'm not able to ...more >>

I have a byte array and I'm trying to translate a DWORD in that array into an integer so that I can use it as an offset into a later part of the array. Once I get the offset, I've successfully worked out how to translate the offset part into a string but I can't work out how to translate the of...more >>

Hi there, I've been fighting a tough problem for the last week. I have an application with a VB6 client and a .NET server. On the developer machine, the application works as expected. However when I installed our software at our first beta site, the VB6 application now crashes when it ...more >>

In our MTS server, there are some component coded by VB6. Now I just try to verify all component working fine, so I create an object for each component. Using Type.GetTypeFromCLSID and Activator.CreateInstance (in C#) can create object ONLY for .NET component. My question is: How to Create an...more >>

I am taking a few first steps in adding some .net operability to an existing (huge) VB6 app. (I am not a VB6 programmer). I have used the Interop Forms Toolkit (V2.0) to create a .net test form, and I am instantiating that form from the VB6 app. The .net form raises an event, which is handl...more >>

We are porting a huge VB6 application to dotnet 2.0. The full application has 800KLOC of VB6 code. The old application was basically as small shell application that loaded optional plugins (nearly 100 of them for a complete installation). Because it is impossible to rewrite all existing code at...more >>

Hi, I try to control a PowerPoint Slideshow with c#. I have a dsoFramer Control (axFramerControl) and can load and view a powerpoint presentation within my form. When I try to control the presentation using Microsoft.Office.Interop.PowerPoint I get a Cast Exception. Here is some code to ...more >>

Hi... One of my colleagues is have a problem that's driving him crazy. We have a number of assemblies that expose some C# objects as COM. One particular one is throwing an 80131534 error on instantiation from an ASP page. The error message doesn't really say diddly about what it doesn't...more >>

I have a web service which calls a .NET queued serviced component in COM+. I turned statistics on for the component. I call the component 10 times, 10 objects get created but they do not go away. I'm calling Marshal.ReleaseComObject after I make each call. [WebMethod] public NotifyRes...more >>

I have a legacy VB6 DLL that I'm calling from a C# program. I'm using the "Add Reference" functionality in VS 2005 to accomplish this. One of the classes that are implemented in the DLL has a member which is an associative array (indexed by strings.) If I call into the DLL from VB.NET, I ca...more >>

I have an .idl file that defines an interface with a method that takes another (externally-defined) interface pointer as a parameter (see example tmp.idl file below, where ITmp::DOM takes an IXMLDOMDocument pointer). When I run midl.exe to generate the .tlb, then run tlbimp.exe on that .tlb, t...more >>

Hi, I'm automating MapPoint from vb.net. When I save as webpage... mapApp.ActiveMap.SaveAs(My.Settings.MapPointTempFilnavn, MapPoint.GeoSaveFormat.geoFormatHTMLMapAndDirections) .... the map is saved with the current MapPoint application width/height. How can I from vb.net set the heig...more >>

Hi Everyone, I have a .NET 2.0 set of classes that i've recently attempted to call from an MFC application using regasm to generate and register a type library. I didn't author my classes with the intention that they would be called from an unmanaged application and i've run into a few prob...more >>