Accepting the fact that =2ENET 1=2Ex is lacking support for named= events, and windows security manipulation, we end up using= interop and the platform SDK, and functions like CreateMutex and= OpenMutex=2E And it's with OpenMutex that I'm having a problem=2E In summary: I'm creating a mutex...more >>

Hi, I wrote a class library using c#, now I will use it in vc++6. I have registered my c# program as com and imported the .tlb file in vc6. Now I have some problems in using it: 1. How can I response events wroten c# in vc6. The event has custom parameters. For example: C# ...more >>

Hiya, I have a problem with my application. It hangs around in memory after exiting (and the debugger thinks its still running; I am unable to "break" or "stop" execution). The main loop below shows my "main" function. When the main form is closed, this function is exited, so the "hang" ...more >>

Has anyone used the COM interop to acess .Net asseblies from an unmanaged C++ application? For various reasons we have a legacy VS 6.0 C++ application that we would like to compile with VS .Net and without the /clr switch and using the COM interop use the XML features available in the .Net Frame...more >>

Hi all, I have a library with some controls developed with VB.Net which I've used for a while, now I've added an event to signal some data is changed, but I can't find how to add event handler in the host application (VB6). I can see regasm has automatically added a method add_<eventname...more >>

I have a legacy application that is being updated and we would like to access and use the XML features available in the .Net framework. What is the best method to use to get at the .Net classes. The application needs to remain an unmanaged application due to the various 3rd party packages in use...more >>

Hi, I have been developing an application in C# that make use of Microsft Office Automation. More specifically it automates Excel 97. Unfortunately I got a little carried away and installed the Office XP PIA. Since then code that worked before keeps failing. I know it is not the code bec...more >>

Hello, I need to handle an Excel.Workbook.BeforeClose event in my VB.NET application. When the framework attempts to bind the event with my handler, it throws a System.InvalidCastException with message "No such interface supported". I included the relevant declarations: Imports Excel ....more >>

Hi, i did the scanning application in VB using image scan & edit controls. But the same is not working in ASP. So i'm planning to do it in asp.net. if u have any solution please let me know. -------------------------------- From: UmaMaheshwar Reddy ----------------------- Posted by a user...more >>

Hi All, I am trying to use LaunchRunner in Baf.dll, it's defined like this: BOOL CDECL LaunchRunner (LPCSTR szUserDisplay, BOOL* pbEnabled); I'm trying to use it in a vb.net app but can't make it work. Here are some attempts I've made: 1) 'This one uses a pointer to a boolean ...more >>

The C DLL has the following declaration: ExternC int4 STDCALL func( char * ); // -> array of 32 byte strings I can call it from C++ code using [this works!]: char str[32] = "My String"; int4 result = func( str ); Now, I need to do this in C#. I tried something like this, but it won't...more >>

Hi I'm trying to define the following C++ shell struct in C# (see shtypes.h or shtypes.idl): typedef struct _SHITEMID { USHORT cb; BYTE abID[1]; } SHITEMID; where cb is the size of the whole struct (in bytes) including cb itself and abID can have a variable length. here is m...more >>

Hello, I am trying to call a C function from a dll. These function take a pointer to a structure as a parameter. This structure is allocated into the unmanged heap by the C function (it uses some malloc). I would like to know the best way to release this memory . For the moment I have creat...more >>

Is there any way to receive the type of a Property of a com object, with reflection. What i know now is how to receive the value. And what i need is the Type of the property. However, and i do not know how, the Intellisense know exectly the types of the members / properties of com obj...more >>

Hi, I have an COM Component ,which is responsible for taking the Data from DB , Generating the Excel and sending the Generated Excel File by mail to the user. Note :The COM is registered on the system. The COM is created in VB. Now I m trying to access the COM From the Windows service. ...more >>

I have the following code in a c# project of mine. public void SetProcess(Process NewProcess) { CurProcess = NewProcess; CurProcess.WaitForExit(); MessageBox.Show(CurProcess.ExitTime.ToString()); } Everything goes well until the last line. The process waits to exit, then immediat...more >>

Hi, I have and COM object is running fine on C# Windows Application. However, it doesn't work on ASP.NET. Below is an error occurs when I call a method of COM object exactly the same in ASP.NET C#. "System.Runtime.InteropServices.COMException: Application configuration does not specify ...more >>

Instaed of throwing all of my problems one-by-one I decided to put down what I am trying to do and find out the best approach. There is a common custom Interface that several apps use (these are written in C++), we will call this interface ITestExec. There is another application that Proxy's ...more >>

OPC (OLE for Process Control) is a protocol as an interface= between applications and industry hardware drivers=2E It defines= two main components (COM) registered in opcserver category := OpcServer & OpcGroup=2E I have written two coresponing classes as follows that implement= the require...more >>

Hi, i am having problems accessing outlook from asp.net. I create a C# console application which connect to outlook fine however when changing it to work with asp.net it just hangs can someone tell me what it wrong with it. Thanks Code try { Outlook.Application oApp = ne...more >>

Thanks in advance to those person who'll try to answer me. I have a problem with a COM dll that I must use for a Web Application written in ASP.NET and C#. My server is IIS 6 on Windows Server 2003. I tried to register the DLL with regsvr32, and I added it to the reference of the project in Visu...more >>

I want to get the target and argument of a shell link in a C# project, so that I need to use the shelllink interface but I do not know how to do. I added the shell32.dll into the reference and tried the ShellLinkObjectClass of Shell32 namespace. But a failure was reported about that the COM c...more >>

This is a very bizare problem. So, I have a C# COM Add-in for Excel which creates a toolbar, then pops-up meaningful windows when you click the toolbar buttons. Everything works fine the first time. After that, my event handlers do not get called when I click the toolbar handlers. I've isola...more >>

Hello, I try to write an application, that creates an active directory user with exchange email adress. To do this, i used the Howto from MSDN named:Create a Mailbox-Enabled Recipient by Using C# .NET . In this Howto I'm using CDOEXM. As for that I have to use the cdoexm.dll in the Exchsr...more >>

Hi I can't send COM DLL's Bstr Type with c++ My Code is below(C#) --------------------------------------------------------- //define Unmanaged Type [MarshalAs(UnmanagedType.BStr)] public String m_Bstr; //an ellipsis //Call m_Bstr="test"; _Wrapper.VR_CreateTextObj(m_Bstr); <-...more >>

Hello, I have a socket connection to an unmanged application. Application messages arrive as a stream of bytes that get added to a byte array. The structures that define these messages are defined in a C/C++ header file. I would like to use managed C++ to expose a Message object to a C# ...more >>

Can anyone tell me why my function: public int pingPhone() { return 0; } comes across in the tlb as: HRESULT _stdcall pingPhone([out, retval] long* pRetVal); I need it to be: HRESULT _stdcall pingPhone([out, retval] int* pRetVal); Any ideas? -- MICHAEL CARR ...more >>

Hello, I would like to give a C# application access to constants defined in C/C++ header files. These constants are in header files and look like: #define MAX_LEVEL 1000. These constants are used by many other applications, and I do not want to redefine them in my C# code. I think a m...more >>

I have a c# component that I have created that has a single interface. = I would like to be able to use in from a Visual C++ 6.0 program. C# component public class TestExec : ITestExec{ public TestExec() { } #region ITestExec Members public int initializeTestApp(object wra...more >>

Hello! I would like to get an active COM server instance using .NET. In Visual Basic you would use GetObject, in Delphi GetActiveOleObject. In .NET I have only found the CreateInstance function of Activator. But how can I GET an instance? Robert ...more >>

Hi, I am trying to make a C# component available to ASP through COM. I have gone through the whole process of creating a public Interface and assembly registration. Using VBScript in ASP I can write and read the component's properties but I cannot access any methods ?!? I get an error messa...more >>

Timothy O'Hear posted ages ago (March 2002, message <exNSgYQyBHA.2676@tkmsftngp04>) about a bug whereby VB6 produces the following error when an event is fired from managed code but not caught: "Run-time error 80020006 Unknown name error". I'd like to confirm this. Instantiating a managed obje...more >>