Hi, We have an App in Delphi, it is happily interopping to some .Net code written against the 1.1 framework. We now have some new code developed against the 2.0 framework and I need to be able to have the delphi App interop into both the 1.1 and 2.0 framework code - which it doesn't appear ...more >>

I am calling an unmanaged C dll from a VB.NET project by using the DllImport attribute: <DllImport(_dllName, ExactSpelling:=True, CallingConvention:=CallingConvention.Cdecl, CharSet:=CharSet.Ansi, BestfitMapping:=True, ThrowOnUnmappableChar:=True)> _ Friend Shared Sub score(ByRef indata As Pa...more >>

I have an odd error comming up that does not seem to actually cause a problem (everything seems to work fine) but it concerns me. Error: ---------------------------------------- HEAP[appname.exe]: Invalid Address specified to RtlFreeHeap( 00170000, 10015988 ) Windows has triggered a breakp...more >>

Hi, all. I wish to write an installer class that will register my .NET ServicedComponent class in the COM catalog, just like REGASM does. The problem is that I can only find ways of adding this component to a COM+ application (new or existing). This is not what I want to do, because this as...more >>

Hi all. I hope someone can help with this funny problem. I have two group boxes next to each other, one left and one right of the form. Now I need to let the form maximise to the whole screen. Fine, I set the group boxes' anchoring to 'left' and 'right', but when I run the app, and maximising th...more >>

Hi guys, I'm working on a context shell extension in C#. I'm trying to add bitmaps to the menus. This is based on Dino Espinosa's code at http://www.theserverside.net/news/thread.tss?thread_id=26795 The code works fine, but I'm trying to show a bitmap by specifying fMask |= (uint)MIIM...more >>

Hello, when my application shuts down via Application.Exit() I get a message box with the text ["unknown software exception" 0x80000003 on .....]. In the application I use DirectShow (via directshow.net) and managed DirectX. Besides that I start a tcp listener in a seperate thread but grace...more >>

I was asked by my boss to create representation of data by Graphs in VB 6 application. I checked the features of VB6 Graph control as well as Excel graphs. They are not good enough. I tried to find any third party ocx and all I found do not look good enough either. I found several .NET cont...more >>

Hi! Do .manifest files support 'Implemented Categories' entries of COM components? I could not find anything about it in the MSDN or internet. Cause these Implemented Categorie registry entries will be created the DLLRegisterServer function of my COM component. I don´t know how to merge ...more >>

I'm trying to slowly bring development of one of our web applications to .NET, so for the time being I want all additions to be written in ..NET. I figure we'll just create libraries for all new functionality and slowly move the framework over to .NET and before you know it we'll have a full .N...more >>

Hey All, I want to create an assembly in .Net that I can reference and use in VBA. I have a sample assembly that I've strongly named and that is loaded in the GAC. However, I can not see from within Excel. Please advise? Thanks & Regards, TC ...more >>

I have a COM dll which exposes the function as shown below DisplayPic([out] LPPICTUREDISP* pVal, [out] BSTR* text); When i use the object browser in Visual Studio 2005 this function shows up as Sub DisplayPic(pVal As stdole.IPictureDisp, text As String) I need to convert pVal given as stdol...more >>

Hello! I did some performance testing with ADODB interop object creation, and noticed that interop objects are created much faster on windows applications than ASP.NET. I tested it with this function on both platforms: Private Function CreateObjects() As TimeSpan Dim rsData As ...more >>

Hello, Maybe this problem has been discused many times here but I've spent several hours to find the answer with no luck. Basically, I have a c# class library exposed to COM. The client is written in unmanaged C++. One method of my c# class have a StringBuilder parameter. This parameter is ...more >>

I have two asp.net applications running on the same web server. Each application calls upon its own foxpro com object (dll file) that does some processing (they are not the same com object). Each of these com objects has its own strong named wrapper dll around it. Unfortunately, I cannot ru...more >>

Dear All , This is my first post - please go easy...! I have a DLL written in C++ that has the following function exported from it -: char** ListHandles(int *processID); The processID parameter is used to find all associated open file handles , this value is then written to to return...more >>

Hi, I'm currently using interop to expose functionality in a .Net assembly (written in VB.net) to vb6. Everything works fine and the exported TLB works. However, I'm not able to find the correct "helpstring" attribute that I can use to decorate each public method so that it is copied ov...more >>

Hi, I have a COM interface in C++ that it is used in my WebApplication ASP.NET. The question is: what the best way of release this com object. I already using something like this (each time I create an instance and then no needed her): Public Shared Sub ReleaseObj(ByRef obj As Object) ...more >>

Hi I know how to call external c functions in c# through DllImport. Now, i'm trying to call a c++ (unmanaged) class method, defined in an external .dll as static int myClass::myMethod, and i wonder if it is possible. I have used the VS utility dumpbin /exports "myDllPath" in the post-build e...more >>

All, Can anyone supply an example or reference to an example of using reflection to determine the data types contained in a stucture in C#? TIA, Bill ...more >>

Hello, First of I am very new to .NET 2.0... sorry if the question is very basic. Here is the deal. We used to develop in COM (VS 6.0). We have a bunch of objects that use the same interface. The interface is in an IDL file, shared between the projects. Now we're switching to .NET 2.0 (VS 8.0...more >>

Hey All, Just wondering if anyone else has experienced the same bug that I have in MS Word: Create a single class module called WordEventClass as follows: Option Explicit Private WithEvents m_appWord As Word.Application Private Sub Class_Initialize() Set m_appWord = Word....more >>

I have a machine with .NET Framework 1.0, 1.1 and 2.0 installed along with Microsoft Office 2000 (another machine with Office XP displays the same behavior). I have a managed COM add-in built with C# in Visual Studio 2005. Excel and Word are using CLR 1.1 so my add-in fails to load. PowerPo...more >>

I have a .net 2005 component that I want to distribute so it is accessible via COM. During development this works fine. I check the “Register for COM interop” on the compile tab of the .net project’s properties window and then build my project. Using a VB6 test project I can add a ref...more >>

Hi there, this is a newbie question. I have written an ActiveX Com object in VB6. Compiled, now I have my dll file; I have written in VB.NET 2003 the server application that handles it. But.. I don't know how to distribute the whole project! I mean. I don't know how to create an installation ...more >>

Hello, OK, I understand the whole .NET garbage collection idea. Specifically, C# destructors are actually finalizers which are called when the GC gets around to it. I created a C# class and made it's interface available as a COM object. I created a Visual Basic 6.0 application which us...more >>

Hi, I need to port COM DLL from Borland C++ Builder to C# (VS 2005). Can you please point me to a tutorial or an example of COM DLL in C#. Thank you. Gregory Khrapunovich ...more >>

I'm working on a project that uses some older VB6 COM objects. One of the classes returns a Collection object, which I am having trouble reading in C#. Can someone point me in the right direction here... ComObject objItemType = new ComObject("Items"); args = new object[0]; VBA.Collection co...more >>

Can anyone recommend a good book for starting to use P/Invoke and/or Interop? I write C# - I've never done any C++/Win32 stuff so I can use P/Invoke and Interop stuff but I don't really understand it and I'm never happy with that. SSG ...more >>

Hi all, I used to create an Interop COM object like: AppDomain::CurrentDomain->CreateInstanceAndUnwrap(assemblyName, className, true, (BindingFlags)(BindingFlags::Default), nullptr, params, nullptr, nullptr, nullptr); And pass it pIUnknown to unmanaged side; But later, when I query the t...more >>

Does anyone have any code sample declarations and calls for SetupDiGetDeviceInterfaceDetail that they could please post? Thanks in advance, -Ed...more >>

Hello there, Is there a way to add .Net controls (textboxes, labels, etc.) to an unmanaged tab control, which was passed as a IntPtr argument to my Dll (written in C#). I'm writing a plugin Dll to be used with application written in unmanaged C++. The plugin has an interface function that the...more >>

Hi, I have problems setting an instance of a ShellFolderView object to thumbnail view mode. I'm programming in C# and have so far successfully brought up a ShellFolderView by navigating a WebBrowser ActiveX control to a folder on my hard drive and then assigning a ShellFolderView object to the ...more >>

Hi all, I just started getting this annoying exception/error the past few days. "An unhandled exception of type 'System.DllNotFoundException" occured in ... "Unable to load DLL '...': The specified procedure could be found. (Exception from HRESULT: 0x8007007F) This just started happeni...more >>

Hi I have a COM object that is being used by my ASP website. It is running under component services and my website is working perfectly using that object. now I was developing a mailer service in .NET for this project, and tried to use the COM object because it has a lot of functionality...more >>

I have a few unmanaged dlls I want to interop with using pinvoke, etc... However, these dlls are undocumented so I have no idea, what parameters the methods take, or return.. I don't even know what methods are in the dll at all! How can I peek into the unmanaged dll to see a signature of th...more >>

I have a web project that uses StateServer for the session. I also have a prolog Java DLL that is serialized. In included the dll in the project reference and ran the project. I stored a Prolog object in the session and at the end of the page processing I received the error, "Unable to seri...more >>

Hi My application uses an embedded Internet Explorer Control to automate some tasls in a web-application, of which I don't have control. When the user clicks a certain link, the web-server sends a redirect to a page that resonds with a JNLP file, the mimetype is application/x-java-jnlp. I ...more >>

Hello I have a VB6 dll that I created an interop dll for with tlbimp tlbimp database.dll /keyfile:database.snk /out:Interop_database.dll the database.snk was created with 'SN -k' and then I use "gacutil /i" to register the dll in the gac. (I can't use the private bin, because more than one app...more >>

I am writing an application inVisual Studio to ease our frontpage publishes. I have the command to publish, but I need to attach the Publish log to an email. Does anyone know how to get the publish log uri in order to attach the email? Here is the code that I am using to publish: Public F...more >>

Hi, Got some problems here. I have a COM object which is actually a .NET class with [ClassInterface(ClassInterfaceType.AutoDual)] attribute and strong name. I consume this COM object from unmanaged C++ code. My applications that uses this code has a VS2003 setup project which references th...more >>

I need to be able to set the HTML in an instance of IE programatically. Currently I am doing this (and it works) using IHTMLDocument2.writeln(). The problem is that if the HTML contains links to external files (.js / .css etc) IE wont load them. To replicate the problem: 1. open IE at www.m...more >>

My application, written in .NET VB, tries to get a communication port handle from a TAPI object with this code: Dim vFileHandle As Byte() = appel.GetIDAsVariant("comm/datamodem") The vFileHandle is supposed to be a file handle (an IntPtr, I suppose). How can I convert this Byte() in this I...more >>

VB.net 2005 express - Office Word 2003 Office 11 library => references I need to make from VB.net search in Word for these words: "tree", "bus", "car"...(complete list contains ca. 50 words) when find founds word "tree", BOLD entire Row (where is that word "tree"), search next instance of "tr...more >>

Hi, I'm creating a free Icon library in C# with source code include, it already support .ico/.dll../exe and I'd like to support .ICL format too, I need to load a file .ICL (Icon Library) that basically it is a 16-bit dll and then after that I can extracts and insert icons inside. I tried...more >>

Hi all.. I'm trying to pass a string value back from unmanaged code that I'm writing back thru interop to C# and I'm failing somewhere. Everything compiles and runs w/o errors. It's just that the out parameter that I'm initializing in unmanaged code doesn't persist to its C# caller. Basic...more >>

I have a C function that looks like that VOID Get_RN_Info ( PRN_RESULT pRN_Result) the structure for pRN_Result looks like this typedef struct { BYTE HexResult [8]; BYTE HexStatus [4]; BYTE HexLength [4]; BYTE HexCharSet [2]; } RN_RESULT; How would I call this from VB.NET, can any...more >>

I have a .Net TextBox (TextBoxBase, really) in which I am appending about 20 lines of text per second. I use the AppendText() method to accomplish this. This is a great substitute for taking the Text property and concatenating it... Me.tb.Text &= newText ' Instead use Me.tb.AppendText(new...more >>

All, I use to be able to call an unmanaged DLL (written in C/C++) thusly: [DllImport("D:\\TEES\\test")] extern "C" int TestSomething(char* TestDescriptionFile); Granted this is managed C++ syntax, but I cannot figure out how to do this from C#. Some documentation says the following...more >>

I have a dll that exports the following entry point: STDAPI FileSetDate(HANDLE hFile, FILETIME* pft); I need to call this function from C#. I define the function as follows: [DllImport("Some.dll")] public static extern int FileSetDate(IntPtr handle, ref System.Runtime.InteropServices.Com...more >>