Due to the 3rd party library limitations, I have the following constraints: - max of one instance of a a class instance per exe instance (RegisterTypeForComClients(..., SingleUse). - the module must run under a pre-configured nt account. - solution must be in .net The solution i have is a CO...more >>

I'm building a splash screen for a .Net 3.0 WPF app. The SplashScreen class needs to load a bitmap (.png) using Win32 functions but I'm having trouble figuring out how to add the bitmap to my project so it is visible to (Win32)FindResource and then determine what the ResourceID or ResourceNam...more >>

I posted these message under another post that wasn't named well. Since I don't know how to change the post name, I'm starting a new one. The tutorial can be found at: http://support.microsoft.com/kb/811645 It's about writing event sinks in C# to catch events from C++/COM. The idea is...more >>

I have a VB6 collection class that does not always return the correct number of items when enumerated using a c# front end. However the enumeration only fails in a release version of the exe. If the project is debugged in Visual Studio or a debug version of the exe is made the enumeration alw...more >>

I have a class written in an EXE. How do I express the same behavior as CoRegisterClassObject(... REGCLS_SINGLEUSE) in .net for that class. For example, for every instance created by the server object, I would like it launch a new instance of the EXE. Thanks....more >>

I'm using <DispId(0)> attriubute for my COM-Interop interfaces... I have two interfaces one for events and another for properties and methods. I'm using <DispId(0)> attriubute to <DispId(16)> attriubute some are used in one interface and some are used in another. Can I do ranges l...more >>

I have an Office Add-In that I am distributing and installing. When I run Regasm /regfile on it, and then double-click the resultant regfile (adding it into the registry) my Add-In does not appear in the list of available automation servers on the machine. However, if I call Regasm on it, it...more >>

I have a dll compiled from VFP which I need to access from my ASP.NET web application build using VS .NET 2003. Everything work fine on Windows XP (dev) machines but when I deploy the solution to a 2003 Server I get errors calling the methods of the VFP class. I can create an instance of th...more >>

How to I create a COM object when all I have is a GUID that is read from an ext config file and w/o using interop to raw WinAPI calls. For example, I defined interface IFoo in a .net dll. I also have a ServicedComponent that derives from IFoo named FooSvr. In my .net client code, I want t...more >>

Hi! I would like to call a c-function with the following signature: STATUS LNPUBLIC NSFDbOpen (const char far *PathName, DBHANDLE far *rethDB); The paremeter PathName is the path to a Lotus Notes database. My PInvoke declaration looks like this (VB.NET): <DllImport("nnotes.dll")> Priva...more >>

sorry , my english is poor. hope you guys could understand me. i have a activex window(com), an i use this activex ctrl on a winform window(.net). The Acitvex Ctrl has en Edit Window taking character. when i input character like chinese or japanese, the edit window CAN NOT display the righ...more >>

Hi - I am trying to use the Lotus Sametime COM Toolkit (http://www14.software.ibm.com/webapp/download/preconfig.jsp?id=2007-03-15+03%3A35%3A07.908116R&cat=collaboration&fam=&s=c&S_TACT=104CBW71&S_CMP=) in a .NET app via COM interop. The events fire properly when used in a VB6 app, but I d...more >>

From C# I am trying to call the following API (http://msdn2.microsoft.com/en-us/library/ms684063.aspx) JET_ERR JET_API JetSetColumn( JET_SESID sesid, JET_TABLEID tableid, JET_COLUMNID columnid, const void* pvData, unsigned long cbData, JET_GRBIT grbit, JET_SETINFO* psetinfo...more >>

Hi all. I have searched on the web and usenet but haven't seen a good solution for this problem; there may not be one that meets my needs. But I thought I'd ask here; if you can help I'd appreciate it. I have a COM interface that I would like a C# object to implement. I also have a C++ DLL t...more >>

hello all you gurus. I am struggling with releasing com objects. I have isolated the problem to the code below. Objects are released and the process ends until I use "int k = sheet.Count;" Then the process does not end. So I feel confident the problem occurrs here. It appears another referen...more >>

Hi, I have a C++ Dll that has a function that is being exported as shown below extern "C" __declspec(dllexport) validationResult __stdcall _validateData(double dataToMat[], int time); A structure is defined in the header(.h file) as shown below struct validationResult { int r...more >>

using the code below (some parts not included), I create a new excel workbook with spreadheets. I then want to delete a spreadsheet, but a reference remains open and excel stays in task manager when the code highlighted below is used. can someone help me identify what object remains open and ...more >>

Hi, I wrote a COM+ server application with these attributes: [ObjectPooling(MinPoolSize=1, MaxPoolSize=1)] [JustInTimeActivation(true)] [ClassInterface(ClassInterfaceType.AutoDual)] [ComSourceInterfaces("Thales.OPPSR2.TacticalLayoutClipboard.IClipboard")] [SecurityPermissionAttribute(Secur...more >>

Hi everybody, I need help. I want to print the current time on the screen. After research I managed to run the codes below in regular C++. But I could not make it to run in .NET Framework environment. Can anybody tell me how to make these codes to work in .NET Framework or sho...more >>

Hi, I have basically 2 question related to COM objects. 1) I am using in C# project (NET 2.0) Shell32 (so it is referenced in the project) and I am using it to retrieve details of the file. The code is: FileInfo f = new FileInfo(path); Shell32.Shell shell = new Sh...more >>

Hi, I am trying very hard to use RegFree Com from Microsoft Access 2003 on XP Pro .NET 2.0. I made a class library project in VS 2005 C# (Service.cs & Assembly.cs). When referencing in from a local installed Access it works fine. When trying to run it from a different workstation where Tes...more >>

Help please. The excel instance is removed from task manager when I run the code below. If I uncomment the lines pertaining to a workbook, the instance of excel is not removed from task manager. can someone help? Thanks Excel.Application xl1 = new Excel.Application(); //Microsoft.Office.I...more >>

How can one use or extend a C++ class in a pocket pc project which uses C#. Suppose I have written a C++ class,in a Visual C++ project,which gives output as .DLL. Now my first query is How can i add this DLL to my C# project(can i add it in references)?Secondly how can i access this class in ...more >>

Hello NG, I have a problem using variant parameters in C#. I have interface defined in VB6. In this interface there is a method defined containing a variant parameter (vParam): Sub gNotify(ByVal oNotify As srvUIConst.UIInterfaceClass, ByVal lMsg As Long, lParam As Long, Optional vParam A...more >>

The article seems to be missing something. I've jerry-rigged some message boxes into my DLL that fires the event, and I get them every time. It seems to say that there are no connections although the program I have that has the event sink has advised the DLL that it wants the messages like in ...more >>

Hi, I am converting a C# application to run on version 2.0 of the .Net Framework. The previous version was built on version 1.1 of the .Net Framework. The application is a workflow engine which can run a “Project”. The developer of the workflow project can add custom code at each step ...more >>

Running an application executable (release) runs find on my computer: "The application attempted to perform an operation not allowed by the security policy."... System.Security.SecurityException: System.Security.Permissions.SecurityPermission... Thoughts? I was able to narrow the problem...more >>

can anyone tell me how i need to get a struct of strings to asp? thanks all ...more >>

I can return a list of windows and their titles using the API, AddressOf & Callbacks, however I get all programs/processes like GDI+, DDE Server, etc. I really just want the programs opened in the taskbar, such as Outlook, Query Analyzer (whatever)...How can I fliter the list? I was hoping to...more >>

I've created very simple dll i c# *************************************************** using System; using System.Collections.Generic; using System.Text; namespace dodawanie { public class Class1 { public int suma(int x, int y) { return x + y; ...more >>

Please bear with me here. The point of the question is a very narrow difference in behavior between Drag/Drop between applications and Drag/Drop within an application. However, some background is needed to actually understand the question. The environment in which I observe this problem i...more >>

I have both Office 2003 and 2007 on my desktop. I am tryin to force VS 2005 to use the 2003 version bit keeps getting a refernce to 2007 Specifically: When I select Excel 11.0 object library it references: C:\WINDOWS\assembly\GAC\Microsoft.Office.Interop.Excel\12.0.0.0__71e9bce111e9429...more >>

We have a WinForm app in which we are embedding Word 2003 via the DSOFramer control. We have hooked into the "OnPrintPreviewExit" event of the DSOFramer control. On some machines (but not others), when in Word's PrintPreview mode, if the close button is clicked, an exception occurs in "Win...more >>

Hi, We have converted our database connection layer and business layer to ..net, but still have the UI in vb6. That is why we are still using ado 2.8 (we often times return a recordset to the UI). We are having a problem where the call to open the recordset is intermittenly hanging. Th...more >>

my web page C#.net is work properly in my iis .but when i publish in another server it give errers.i used vs2005 and ms word 2003. but in the server there is no vs2005 or word installed. it has only .net frame work installed.folowing the error, Parser Error Message: Could not load file or asse...more >>

Operating System: Microsoft Windows Version 5.1 (Build 2600.xpsp_sp2_gdr.050301-1519 : Service Pack 2) Visual Basic: MIcrosoft Visual Basic 6.3 Version 9972 VBA: Retail 6.4.9972 Forms3: 11.0.6550 (comes with Excel 2003) The code below fails to copy the PrefixCharacter from cell "a1" to ce...more >>

I have a problem with debugging a COM add-in for Microsoft Word, written in VB6. I access the COM add-in from a C# application using COM Interop. The C# app begins by getting a handle on the Word.Application object, and using that a handle on the correct COMAddIn object. Then I use the Obje...more >>

Heya, I know this has been debated alot, but everywhere I look there is a different solution. So I need some advice on this: The source if the following struct: typedef struct { BYTE Ps; tSTRUCT_NUMERIC * Rates; char * RegNr; char * Cashier; } tFUNC_PARAMS; Ho...more >>

Looking for a clue in on the .Net functionality to manage windows outside the application, i.e. other applications. Just looking to find the window handle by title and adjust its properties such as top, left, etc. Much like here, but using Win32 API http://vbnet.mvps.org/index.html?code/hel...more >>

Hi, I use PInvoke interop to call the Win32 multi media Midi functions (midiXxxxx). This API uses a handle for an open Midi in or out port (device). I also use a callback function to get notified of opening and closing of the port and of incoming midi data or when sending midi data has finish...more >>

Hi, I know you can embed OLE (COM) based objects into a word document, but is it possible to do the same with a C# or VB.NET windows forms control? If not, are MS working towards such functionality? Thanks ...more >>

Ok, first off I hope I'm asking this in the right place. I realise that many people (especially those who love VB.net/c#) actively detest VB6. Please understand that if this is your viewpoint, answering this question will in fact speed us on our way to using .Net instead of VB6 I need t...more >>