How to put the WebBrowser control into IE9 into standards?
Have you tried setting in your html the <meta http-equiv=”X-UA-Compatible” content=”IE=9″ /> or <meta http-equiv=”X-UA-Compatible” content=”IE=edge” /> which means latest version
com
Turn a simple C# DLL into a COM interop component
This is the answer I wanted to find in StackOverflow but couldn’t. It turns out to be fairly easy to turn a simple C# dll into a COM dll. To create the C# dll Create a solution with a C# class project. The class should have an interface for the properties/methods and an interface for … Read more
Getting ScriptControl to work with Excel 2010 x64
You can create ActiveX objects like ScriptControl, which available on 32-bit Office versions via mshta x86 host on 64-bit VBA version, here is the example (put the code in a standard VBA project module): Option Explicit Sub Test() Dim oSC As Object Set oSC = CreateObjectx86(“ScriptControl”) ‘ create ActiveX via x86 mshta host Debug.Print TypeName(oSC) … Read more
How does the C# compiler detect COM types?
By no means am I an expert in this, but I stumbled recently on what I think you want: the CoClass attribute class. [System.Runtime.InteropServices.CoClass(typeof(Test))] public interface Dummy { } A coclass supplies concrete implementation(s) of one or more interfaces. In COM, such concrete implementations can be written in any programming language that supports COM component … Read more
StaTaskScheduler and STA thread message pumping
My understanding of your problem: you are using StaTaskScheduler only to organize the classic COM STA apartment for your legacy COM objects. You’re not running a WinForms or WPF core message loop on the STA thread of StaTaskScheduler. That is, you’re not using anything like Application.Run, Application.DoEvents or Dispatcher.PushFrame inside that thread. Correct me if … Read more
Generate manifest files for registration-free COM
It looks like the perfect solution does not yet exist. To summarize some research: Make My Manifest (link) This tool scans a VB6 project to look for COM dependencies, but it also supports manual declaration of late-bound COM dependencies (i.e. those used via CreateObject). Interestingly enough, this tool puts all information about the dependencies inside … Read more
Error ASP 0177: 8007007e CreateObject fails for COM DLL
The advice below relates to both Server.CreateObject and CreateObject use in vbscript jscript vba The Web Server sections are specific to asp-classic but still worth reading. What Causes This error? Server.CreateObject Failed is caused most commonly when Web Applications are moved from one Web Server to another without an understanding of external COM components that … Read more
How to handle AccessViolationException
EDIT (3/17/2021) Disclaimer: This answer was written in 2011 and references the original .NET Framework 4.0 implementation, NOT the open-source implementation of .NET. In .NET 4.0, the runtime handles certain exceptions raised as Windows Structured Error Handling (SEH) errors as indicators of Corrupted State. These Corrupted State Exceptions (CSE) are not allowed to be caught … Read more
Could you explain STA and MTA?
The COM threading model is called an “apartment” model, where the execution context of initialized COM objects is associated with either a single thread (Single Thread Apartment) or many threads (Multi Thread Apartment). In this model, a COM object, once initialized in an apartment, is part of that apartment for the duration of its runtime. … Read more
How to post messages to an STA thread running a message pump?
Keep in mind that the message queue that Windows creates for an STA thread is already an implementation of a thread-safe queue. So just use it for your own purposes. Here’s a base class that you can use, derive your own to include your COM object. Override the Initialize() method, it will be called as … Read more