Hi I have an Outlook add-in solution which includes a setup project. If I install the Outlook add-in by right clicking on the setup project and sleeting Install then the add-in gets installed fine in Outlook. However if I use the setup generated in the setup project Release folder then even...more >>

I have some questions about setting a ListView Item from a different process. I have found that it is possible to manipulate a ListView from another process. Using a modified version of the code found here by Chris Taylor: http://www.dotnetjunkies.com/WebLog/chris.taylor/archive/2004/05.as...more >>

I've written a cross-platform library in C++ for handling some external hardware. It communicates with the hardware via a C-calling-convention protocol library. I'd like to make my library available to .NET users and in particular C# programmers. What's necessary to do this? The API's ar...more >>

Hi, From a C# program I need to access an existing DLL that enumerates the boards detected via a hardware probe of the system. The function that does the enumeration expects an int * where it stores the number of boards detected and a char *** where it stores the name of each board detec...more >>

Hi Is vs 2008 pro sufficient to write office add-Ins or do I need vsto 2005 SE as well to write office add-Ins? Thanks Regards ...more >>

Hi I have a simple Outlook 2003 AddIn created using Outlook 2003 AddIn template in vs 2008. The full code is given below at the end. I got warnings on Interop assemblies as I have Office 2007 installed while AddIn is 2003 but as I need to target both 2003 and 2007 I am sticking to lowest co...more >>

Hi, I have a COM interface function that has an [out]SAFEARRAY(HRESULT) * arrHr parameter. The function is implemented in C# and is called from C++. Unfortunately it doesn't work. I always get an error 0x80131533 SafeArrayTypeMismatchException (except if I set arrHr to null). The C# sign...more >>

Hello, I'm testing out c++ interop v/s direct p/invoke and noticing that c++ interop, for my tests, are much slower then p/invoke. I am wondering if there are any default (security??) policies I need to disable to improve performance as I would prefer c++ interop. My test is as follows: ...more >>

Ok, I've called ReadEventLog in C# and got back an EVENTLOGRECORD struct. I'm able to read that fine. But, when I try to get the strings (SourceName, ComputerName, etc), all I get is junk. I don't know if I just don't know how to convert the byte array correctly into a string. I tried conver...more >>

Hi... I know this is going to sound weird but we have a number of objects written in C# that we expose as COM (don't ask why). Regasm has them with ThreadModel=Both. One of our big consumers is an ISAPI filter that is CoInitialize()/CoUninitialize()ing STA at every stage. I've got a ...more >>

I need to implement callbacks from methods in an unmanaged DLL to a mixed mode DLL. I'm having trouble finding examples on how to do this and all the examples I find seem to revolve around interactions between managed/unmanaged classes in a single mixed mode DLL. Is it possible for me to defin...more >>

Hi, I've been banging my head against this one and now I'm about to scream. Any suggestions appreciated. I've scoured the net too and for some reason all suggestions don't work. I've got a C++ app that takes a function pointer from a C# application (it's for a callback). The callback signature lo...more >>

Hi, This message is related to a problem I posted a few days ago: http://groups.google.com/group/microsoft.public.dotnet.framework.interop/browse_thread/thread/4d243fe978432c06/37881b961489f153?hl=en&lnk=st&q=Visual+Basic+X64+COM+parameter#37881b961489f153 I had a problem where INT"_PTR" in...more >>

I am trying to sink event thrown by managed code in C++. When the event is thrown the control never reaches unmanaged client. AccessViolationException is raised in managed code at System.RuntimeType.ForwardCallToInvokeMember. I am fighting this issue for a long time now with no effect at all o...more >>

Vb.net app with COM control. The COM control is an object framer used by the vb.net app to treat other apps( eg. word) as embedded objects. Generally this all works fine. One of the functions of this COM control is to search embedded app data for text ( 'Find' this or that.) This also wo...more >>

Hi, I have a small problem. I have defined some interfaces in a COM dll, and have defined some parameters in these interfaces as INT_PTR. I thought that when I import the COM dll in Visual Basic.NET that I can use IntPtr as the type for these parameters, but the intellisense shows me that t...more >>

Hi all, When I want to pass an api function to C#, I use [DllImport ...] public ... ReturnVariable MethodName( args .. ... ) I understand that ReturnVariable cant be a structure. Is it possible to solve this by using C++ CLI, this is, some version of C++.net? thanks very much, Carlos. ...more >>

I have an application that uses a COM interface to get bitmaps for toolbar buttons. I have implemented a C# class that supports the interface. One method of the interface passes a pointer to HBITMAP to return the bitmap handle. The RCW for this method has the parameter as an IntPtr. I crea...more >>

GC.Collect() not cleaning memory, how to find out what references to lots of memory still exist? When all my processign is done i set everything to null and then: GC.Collect(); and then GC.WaitForPendingFinalizers(); but it still shows that my process takes 400 MB of memory. Is there any ea...more >>

Does someone know about a piece of code in VB.NET or C# to register an app to scanner events using Still Image (sti.dll) API? I don't understend how to implement the API correctly using the provided documentation Or else another way to do that?...more >>

Hi, for my programm I need to use some gdi objects in C#. Converting a HBITMAP hasn't been so hard, but right now I'm trying to retain a System.Drawing.Brush from a HBRUSH. This seems to be not quite easy, as there is no FromHBrush - Method or something like that nor didn't Marshal.PtrToStructu...more >>

Is there any way to expose a base property to COM without overriding or shadowing? Here's what I'd like to do: <ComClass()> _ Public Class A <ComVisible(True)> _ Public ReadOnly Property One() As Integer Get Return 1 End Get End Property End Clas...more >>

Hi! I have IDL-file: const byte DataStrLen = 255; #pragma pack(1) typedef struct { wchar_t fDataStr[DataStrLen]; } tSomeData; #pragma pack() [ object, uuid(...), pointer_default(unique), local ] interface ISomeData : IUnknown { tSomeData* getDataPtr...more >>

Hi, I am trying to call the unmanaged APIs defined in 'ssleay32.dll' through C#.Net Application. I have downloaded this file and placed it in C:\Windows\System32 folder. But when I try to call any of the fucntions from this dll I get following error. Unable to load DLL 'ssleay32.dll': Th...more >>

Hi - I know that this is most likely a Microsoft-ism, but none the less... I have a C++ class namespace JELLO { public ref class DEMO { public: DEMO() {;} ~DEMO() {;} bool DoStuff(const char *s1, char *s2) ...more >>

I've got a ATL C++ COM server that I need to put into the C:\Windows \system32\spool\driver\x64\3 folder and /regserver it there. I can copy the .exe into the folder and run /regserver using an admin mode command prompt. The problem occurs when I try to build my test VB application. Orginall...more >>

Hello, I get this error when serializing a object. Specificly an bitmap in the object. This object is obtained from a different dll than the one serialized, could that be the problem? That seems to be the only difference... Any way to fix this? Thanks, Schneider below if the code and err...more >>

Assume that you have referenced an Interop assembly and have created an application object. (An Office object for example) Why might such an object display an expected list of properties in QuickWatch yet fail to display their values, instead displaying errors such as RPC_E_SERVERFAULT? ...more >>

A little while ago I created a Shared Add-in (an integration to MS Office), and now I'm trying to implement Exception Handling in the application. The thing is, quite simply, I cannot get it working. When I try to call the ExceptionPolicy.HandleException call, every time I get an "Object refe...more >>

Hi all. In spite of the fact that I keep reading that it's better to use explicit interface definitions when creating .net componets to use with VB6 client apps, the only examples I come accross use the ComClass templates. I understand that using the ComClass templates means that any requir...more >>

I've got a COM dll that I want to use in a C# application. The COM dll exposes an interface with about 6 methods, and two events. I want to create an RCW to make it easier for client applications to call the methods which take arrays as parameters, otherwise the clients need to use System.Arr...more >>

I'm currently re-writing an integration system (the original is VB6 code, the new is being written in VB 2005), and I've come to a major hurdle that I'm hoping you guys can answer. I'm also hoping I'm posting this in the right place for this. In a nutshell, I have already created a Windo...more >>

Hello, I am not sure this is the correct forum I am posting. I am developing an application that will detect if something is copied onto clipboard. Also I want to know which application has copied the text,object or whats-ever. I could get VB.net sample that fires event (WindowsProc ove...more >>

I use Illustrator in my ASP.NET app and I have error on string: =20 Illustrator.Document curDok =3D=20 appIll.Documents.Add(Illustrator.AiDocumentColorSpace.aiDocumentCMYKColor= , 300, 300); =20 full error is : System.Runtime.InteropServices.COMException was unhandled by user cod...more >>

I've been playing around with The Code Project: "Creating a shell extension with C#" (http://www.codeproject.com/KB/cs/dateparser.aspx) in order to learn how to make a basic shell extension. However I'm running into a snag. I'm not getting any message boxes on the test machine (vmware). After...more >>

Hi I have some VB 2005 code which fires up an Excel spreadsheet, creates some headings, and then populates a number of rows. There are References to Office and Excel, and I use early binding. The machine on which I compile this code has Office 2000 installed, and the code runs happily on ...more >>

Say you have a COM object that fires events and which exists in another process, such as an executable COM server. Now sink those events in a form and update a control on the form. The events will not come in on the UI thread so you'll have to use some type of Invoke to update the control. ...more >>

Hi all, I have a DCOM server written in C++ running on a machine. It fires an event in response to a command from the client, written in C#. The client is running on another machine. When the client execute the instruction "MyServerObj.RasEvent += new RASLIBAPPLib._IRasInterfaceEvents_RasEve...more >>

I've been digging around MSDN in order to find an interface or something that would allow me to hook into a Vista folder in order to make a shell extension. Has anyone come across one? I would greatly appreciate /any/ help! Take care, Bryan ...more >>