Hi there, I am trying to P/Invoke a DLL able to perform a wifi scan. There is a poll method to which I have to pass a pointer to a function. Then the native code will call back the passed function which has char* parameters. I tried to write my P/Invoke (see below) but when I run the ap...more >>

When calling GetOverlappedResult in Kernel32, i use an OVERLAPPED structure. What can happen, is that the Garbage Collector could move around the memory in which the OVERLAPPED structure resides before the operation completes, and thereby crashing my program. The solution is to create an unman...more >>

Hi, What I'd like to do is attach to an instance of Word (if it's running), and if it's not running then create a new instance of the application. To that end, I was wondering if the following was a valid use of the Activator.GetObject() method: public Word.ApplicationClass CreateWordAp...more >>

Hi I hope someone is able to help me towards a solution here. I've developed a program that flashes the ROMs of smartphones. It runs with multithreads. I have 16 simultaenious threads of the same class, collected in an array of that class. The flashing process takes about 20 mins, regardles...more >>

Hi group, I'm trying to map up a struct from a win32 dll. The struct in c goes like this: typedef struct _struct1 { SHORT var1; WORD var2; SHORT var3; FLOAT var4; Int32 var5; Int32 var6; CHAR var7[14]; } STRUCT1; My mapping in C# [StructLayout(LayoutKind....more >>

Hi, Is there a tool that can be used to list out all the symbols in a static library that was created using VC++ 6.0. I am interafcing this library to my C# project using an MC++ wrapper, but am getting unresolved external symbols errors. There is a slight difference in the header and the f...more >>

Hi! This is most probably a well know issue, but as I do not know the correct terms to use in a search. I did not find an answer so far. I have created a com dll, which contains 2 interfaces: Itest1 and ITest2. ITest1 has one method: HRESULT test([in] ITest2 * x, [in] ITest1 * y); Furt...more >>

Greetings, I apologize for re-posting this, but I'm running out of options on my side. I've got a DLL that's not COM compatible and I'm stuck using interop for the first time. I got couple of simple DLL calls all right but cannot get the most important one to work. Here is documentation:...more >>

Hi all. I have an application that embeds multiple Visio documents using the Visio drawing surface control (Microsoft Visio 11.0 Drawing Control Type Library). It was working fine on VS.NET/.NET 1.1, but after I moved to VS 2005/.NET 2.0, customers started reporting the runtime error below...more >>

I've searched around for this and have found some VB examples but 1) I'm not sure that they're VB.NET and 2) If they are VB.NET, then they're not working once ported to C#. I'll be doing this in .NET 2.0 w/ VS.NET 2k5 Below is my code: #region WinAPI Functions [DllImport("user32.d...more >>

I have some basic questions about generating .NET dlls for use in classic COM applications. I would like to understand the inner workings a bit better. I have written a basic VB Class and built it using Visual Studio. I am NOT using the "Register for COM Interop" option! I then use regasm.e...more >>

Hi, I'm trying to access and manipulate .NET objects from unmanaged code using COM. Up to now I succeeded in creating a ICorRuntimeHost object, getting the default AppDomain and creating some .NET objects (I'm mainly interested in System.Windows.Forms objects). The problem I have is twofold...more >>

Hi, How do i create a mixed mode DLL which supports all three - MFC, ATL and CLR. I have gone through the link <a href="http://msdn2.microsoft.com/en-us/library/ms235211.aspx">http://msdn2.microsoft.com/en-us/library/ms235211.aspx</a> I have tried various combinations of the steps describ...more >>

I'm trying to set up a structure using unions (fieldoffset) and I'm running into a problem. When I try to setup a union with either data array or message type, I get a an array with a fieldoffset the following error: System.TypeLoadException: Could not load type 'Test.Message' from assembly ...more >>

Hi, I created a very simple add-in to Word that creates a toolbar with a button that colors the selected text when pressed. I've tried to create a new add-in keep it as simple as possible to narrow down the possible errors. I'm using c# in Visual Studio 2005 and Word 2003. It works fin...more >>

Hi All, I have referenced a Vb6 Active X DLL in my .NET project and I can see all my COM Classes in the DLL no problem. However I cannot see any of my global variables or public functions/subs which are in a module in the COM DLL. Is it possible to see these from my Vb .NET application? If not,...more >>

I need to work with a SQL Server COM library (sqlvdi.dll). In the samples, there are C++ code like this hr = CoInitializeEx (NULL, COINIT_MULTITHREADED); if (!SUCCEEDED (hr)) { printf ("Coinit fails: x%X\n", hr); exit (1); } hr = CoCreateInstance ( CLSID_MSSQL_ClientVirt...more >>

Hi guys! I really need help from this one. I created a desktop application that connects to the ms sql database and transfer the data to excel.... its working. But when I transfered the codes to a web application, it is still working but the excel won't show up. I tried to look into the Ta...more >>

Hi all I have a VB6 ActiveX component (dll) that listens to a real-time data feed of stock quotes and then passes them on using events. The consumer of these events is a C# application using .NET 2.0 All event wires OK and the C# application runs just fine getting all real-time events from th...more >>

Hello everybody, I need to send from a C# object events, that have to be caught in my C++ code. I have followed the instructions from the MSDN article "Raising Events Handled by a COM Sink", but I have a problem when I call AtlAdvise in the C++ client: the method FindConnectionPoint will fa...more >>

I need to access a .NET assembly from a traditional ASP page. What I've read in the .NET Framework documentation says I have to do two things: 1) Register the assembly using regasm.exe. I've done that. 2) "After registering an assembly using Regasm.exe, you can install it in the global ass...more >>

I have a web site that is made up of mostly ASP pages, with a small (but growing) number of ASP.NET pages. I'm writing a component that will initially be called from some ASP pages, but will eventually be called from ASP.NET pages when those pages are ported over. Because ASP.NET is the clie...more >>

Hey I have a static class written in C#.I want to expose this class to Vb 6.0.For this I am using Interop.I have added necessary attributes to my ..Net classes. For a non static class by adding the attributes I was able to access the class in Vb client. But for a static class it soes not work ...more >>