I have a COM object written in C# that is a toolbar for the Windows taskbar (implements IDeskSite). I want to either, Prevent the taskbar from being loaded if a certain application is running Allow the toolbar to unload itself in the case of an unhandled exception rather than allowing the exception to cause Explorer to crash For #1,...
In COM when I have a well-known interface that I can't change: interface IWellKnownInterface { HRESULT DoStuff( IUnknown* ); }; and my implementation of IWellKnownInterface::DoStuff() can only work when the passed object implements some specific interface how do I handle this situation? HRESULT CWellKnownInterfaceImpl::DoStuff( ...
If I have the follwing assemblies: MyComVisibleApi: a .Net assembly that is used by a VB app MyReferencedAssembly: a .Net assembly referenced by MyComVisibleApi Does MyReferencedAssembly need to be ComVisible if its functionality is never directly referenced by the VB App? Thanks! ...
I am trying to change the Terminal Services settings programmaticly. I learned that you must use tsuserex.dll. Being c# i ran tsuserex through tlbimp and created TSUSEREXLib.dll then registered it with regasm. I got it working and wrote a framework program with it as a prof of concept. However today after I made some changes when I run m...
Hi, how can I protect my business logic C# code that I have written in a COM object from being reverse engineered by a high tech geek? ...
I am looking to create a Javascript library for ActiveX objects, enabling chainability. For example, I am looking to replace this: var dbEngine=new ActiveXObject('DAO.DBEngine.36'); var dbs=dbEngine.OpenDatabase('D:\\Todo.mdb'); var rs=dbs.OpenRecordset('SELECT * FROM ListItems'); with something like this (a la jQuery): var rs=AX('...
I need to convert a CString instance into a properly allocated BSTR and pass that BSTR into a COM method. To have code that compiles and works indentically for both ANSI and Unicode I use CString::AllocSysString() to convert whatever format CString to a Unicode BSTR. Since noone owns the returned BSTR I need to take care of it and relea...
I've encountered the following error while scripting in Python. ERROR Tue 19. Jan 14:51:21 2010 C:\Python24\Lib\site-packages\win32com\client\util.py:0: Script Error com_error: (-2147217385, 'OLE error 0x80041017', None, None) Unfortunately, I don't know what it means, or even what other information I might need to find out. Does ...
When defining a COM-visible class in C++ I can define the supported threading model in the header file (the threading(single) line): [ coclass, default(IComInterface), threading(single), vi_progid("Example.ComClass"), progid("Example.ComClass.1"), version(1.0), uuid("72861DF5-4C77-43ec-A4DC-ED04396F0CCD") ] ...
Hi all, I'm working on a project that needs more 'flare' than what can normally be done with VB6. My thought is to generate HTML/CSS content and display this within a browser control on a form. I would also like the ability to respond to form events from the web content within the VB application. My inspiration comes from recent expe...
I've been trying to get a registration-free .NET based COM DLL to work, but without success. In Visual Studio 2008 I added a new C# class library. I enabled the 'make assembly COM-visible' and 'register for COM interop' options. I added a public interface and class with some functions. I added a manifest dependency to my C++ client app...
I have an ASP.NET 3.5 application where I am using an ActiveX control. When I try to run the website from Visual Studio 2008 using built-in web server it is working like a charm. When I publish the same code to IIS I get the following error: Retrieving the COM class factory for component with CLSID {ADAACEC8-D9F2-4E05-A5F3-D29E5C9C82F9...
I am using the latest flash player and have a swf file served locally from my dev machine. In one container test app I am able to play the swf and make calls to it, but in my "Real" application the same code path results in com errors (basically it looks like the swf isn;' loading properly) Additionally this is made more challenging be...
We have an asp.net web service running on Windows Small Business Server 2008 SP2 (64-bit). It is in its own application pool. We've tried both Integrated and Classic settings for Managed Pipeline Mode. Enable 32-bit Applications is set to True. It is not able to successfully call a vb6 dll method but a Windows Forms app on the same m...
Hey folks, I've been stuck on this for the past few days. I have a custom COM interface that I am able to cast to, but when I call one if it's functions I get an AccessViolationException because the this pointer has changed. The below code represents the two interfaces that I am marshalling. All methods result in the same problem. Any...
There seem to be a few virtual folders which have GUIDs associated to them (control panel, desktop) - ::{00021400-0000-0000-c000-000000000046} // desktop Where the blazes are these defined? When are they used? What I want is a way to have a string which represents a virtual folder without any ambiguity. If, for instance, I were to...
Using ATL (VS2008) how can I enumerate the available methods available on a given IDispatch interface (IDispatch*)? I need to search for a method with a specific name and, once I have the DISPID, invoke the method (I know the parameters the method takes.) Ideally I would like to do this using smart COM pointers (CComPtr<>). Is this po...
I know how to publish a const of a simple type in IDL, for example: const long blah = 37 But I want to publish consts of complex types, with methods, or at least readable struct-like member fields. For example, perhaps a type called CarType, which has accessor fields like "get_Make", "get_Model", "get_Year", "get_BasePrice", et ceter...
I've been following the 'tutorials' of how to expose a .NET framework through COM ( http://msdn.microsoft.com/en-us/library/zsfww439.aspx and http://msdn.microsoft.com/en-us/library/bd9cdfyx.aspx ). Everything works except for the events part. When I add events to the C# interface the following C++ code is generated: struct __declspec(u...
My application needs two COM DLLs to be registered. It is done automatically if the user has the necessary access rights, but otherwise it can be done using regsvr32. Now on a few workstations the following happens: Start cmd.exe as Administrator Register first DLL: Success Register second DLL: Failure (0x80004005, Access denied) T...