Hi, i got really frustated by this; in the following code, i try to use SHGetDesktopFolder-function to retrieve the IShellFolder-interface for - well - the desktop (root) folder. works well for the first (main) thread doing so; however, it does not for the second also doing this if the int...more >>

Reposting in the hope that an MVP or someone from Microsoft can answer this. I have an enum defined in managed code, e.g.: public enum MyEnum { MyValue1, MyValue2, MyValue3 } I have exposed a method which takes an array of MyEnum as an argument, e.g.: public void MyMethod([In] ref MyEnum[...more >>

All, I've ported the Microsoft Structured Storage API to C# and it works great. My main purpose was to access a compound file's file properties, which I've done. I would now like to extract out the embedded thumbnail image via PIDSI_THUMBNAIL and I need a little help. I've got the STAT...more >>

I am trying to access a .NET class written in c# from a VB6 application. I exported the Typelib and registered it successfully (RegAsm DotNetClass.dll /tlb), but my VB program only sees the methods inherited from Object (Equals, ..GetHashCode, GetType and ToString). I would appreciate any gu...more >>

Hi, When I create an dll in vb.net and I register the dll for COM Interop, is it then possible to use that dll on a machine where de CLR is NOT installed? Thanks, Hendrik Jan...more >>

Hi, I have office 2003 powerpoint with SP1 and I find that running the following code causes powerpoint to remain in memory Dim app As PowerPoint.Application Dim pres As PowerPoint.Presentation Set app = New PowerPoint.Application Set pres = app.Presentations.Open("c:\small.ppt", msoTrue,...more >>

Hi, I have the following class which I want to expose as COM object, but regasm tells me, that no types were registered. namespace SyynX { [Guid("4ADD0E9C-E7CE-42fd-A920-D3C4E6AF29E8")] public interface ISVG { void Load(string xml); void Save(string pat...more >>

Hi, I have already posted a related question on this group, may be the answer to this question is linked to the answer to other question, but I think its not related. I have added the link to other question at the end of this post. Coming to the issue I am facing: I am using Visual Studio....more >>

Hi, I have a pretty basic issue when I am trying expose a C# interface for COM interoperability. Here is the interface definition: [ComVisible(true)] public interface IClass:IClassBase { int IClassMethod(); } and the super interface looks like: public interface IClas...more >>

I have what I imagine is a simple question, but don't know how to approach it really. I have a dll compiled from ANSI C, which has a function declaration with an array; void myFunc(int data[], ...); How can I send in a C# array to "data[]" and get it back out? Thanks....more >>

Hello Everyone, I am having problems getting a component that was written in VB6 to work inside of vb.net. It is a queued component. Can someone send me some sample code that would work in this instance? Here are some questions: 1. Should GetObject still work inside of vb.net? If so, ...more >>

We are running a ASP.NET application which uses a COM DLL to go to active directory and a couple of dataabases. There is no UI to the ASP.NET application it just returns an XML back with the results. This ASP.NET appplication is called by another ASp.NET application. PROBLEM: About 4 to 5 t...more >>

In C#, how do you correctly comment a class that is exposed to COM via the interop so that the comments appear in a COM development tool (i.e. Visual Basic's object browser)? ...more >>

Hello Can anybody tell me how I use the MarshalAs-Attribute to mark a parameter as a VARIANT which contains a SAFEARRAY? Or can I rebuild a structure VARIANT which I can use to transport a SAFEARRAY? Thanks in advance Sebastian ...more >>

Hello I need help to interop this structure in C# to make an wrapper for the "InstallApplication" method: typedef union _INSTALLSPEC { struct { WCHAR* Name; GUID GPOId; } AppName; WCHAR* FileExt; WCHAR* Reserved1; struct { GUID Reserved1; DWORD Reserved2; } ...more >>

Quick Question. In ASP 1.1, if you put a managed DLL (named test.dll) in the bin\ directory, it was sufficient to use [DllImport("test.dll"] etc... What's the location for ASP.NET? Since I get a module not found exception! Thanks ...more >>

I am working on a ATL COM project which will be used by both COM-based clients and .NET clients. One of the interface methods in the ATL project returns a VARIANT. Depending on the input to the method, the VARIANT may contain a VT_BSTR, VT_I4, etc. It also may return an array of bytes ( V...more >>

Hi All, I am trying to get a treenode's state image by sending TVM_GETITEM messgae to the treeview. I have set ... TVITEM.mask = TVIF_STATE TVITEM.stateMask = TVIS_STATEIMAGEMASK TVITEM.hItem = <item whose state image i want ot know> all other members of TVITEM are set to zero. I am using...more >>

Googling hasn't solved this little problem, so here goes: I have a function in C++ which returns a safearray of bytes. I cannot change this function, and I want to call it from C++. The IDL looks like this: interface IHash : IDispatch { [id(1)] HRESULT DoHash([in] BSTR strSource,[out...more >>

QUESTION: How can my ASP page - which uses language="VBScript" - pass a "System.Collections.ArrayList" object - as a parameter - to a C# method in the middle-tier ??? ----- Is it possible at all? - if not, what work-a-round is there? I have no issues passing "string" parameters su...more >>

I have VB code calling C code in a class object. The C code can pop up MessageBox warnings and errors, but they don't act like dialog boxes that are modal (the user can go back to the VB GUI and click buttons). Is there any way to make the VB side understand that a message box is being display...more >>

Hello. I need to pass a String-Array as a COM-VARIANT. In VB6 ist very easy: dim s(0 to 9) as string dim x as variant x=s But in .net I can not get it working. I tried using Marshal.GetNativeVariantForObject but it needs a IntPtr to store the variant in. How do I create/allocate/reserv...more >>

I'd like to use tlbimp to do a wrapper and put it in my C# code and not to create an assembly... how can I do it? ...more >>

I have an enum defined in managed code, e.g.: public enum MyEnum { MyValue1, MyValue2, MyValue3 } I have exposed a method which takes an array of MyEnum as an argument, e.g.: public void MyMethod([In] ref MyEnum[] values) { .... } And now I attempt to call this method from VB6 code a...more >>

i've a C++ dll with a function that return a pointer to a struct, and i need to call that function from a C# windows app. i already try some ways founded on the MSDN and on the web but i cannot map returned struct to a managed struct. // C++ Code struct NKAF { char* SectorCode; char* C...more >>

Hi, i used the primary interop assembly to access powerpoint from my .net windows forms application. Powerpoint is uesd to extract single slides into jpgs and is used to extract the caption of each slide. The app works fine, if Office 2003 is installed and crashes with Office 2000. What must i ...more >>

The problem i've stated in the topic occurs on Windows 2000, while the code works perfectly on Windows XP. Basically, what I'm trying to do is to recursively enumerate shell folders starting at the root desktop. The currentFolder parameter for the first call is obtained from SHGetDesktopFol...more >>

Hi, I have added following two reference under COM tab, Microsoft Office 11.0 Object Library Microsoft Word 11.0 Object Library The software I have used: Visual studio 1.14 Microsoft Office 2003 I have installed Office XP PIAs My program: using Microsoft.Office.Interop ; ...more >>

Hello everybody, I need to call InvalidateRect from my C# program. This function is defined as following BOOL InvalidateRect( HWND hWnd, // handle to window CONST RECT* lpRect, // rectangle coordinates BOOL bErase // erase state); So I imported it in my ...more >>

Hi Gurus, I've been playing with this C# code for 2 days and Googling like a Mad Code Monkey. I hope you can help. I'm working on a program that can read and write bits on the Floppy Drive (A). The overall goal is to read/write blocks (512 bytes). However, my CreateFile function is bring...more >>

I have done searches on msdn, newsgroup, lists, so far I don't see any example showing me how to get array of string to legacy application ( C and vbscript) My mange dot net is compiled in a COM class assembly. Without custom code, I get Microsoft VBScript runtime error: Type mismatch I ...more >>

Hello, I have a C# managed dll which I want to call from unmanaged C++. For this I've exposed the functions from the C# code with COM. The code is printed below. I have a c# function 'PrintRef' which takes a string as a ref argument and fills it with an arbitrary value. However, when C++ c...more >>