First you have to install the wonderful pywin32 module. It provides COM support. You need to run the makepy utility. It is located at C:\…\Python26\Lib\site-packages\win32com\client. On Vista, it must be ran with admin rights. This utility will show all available COM objects. You can find yours and it will generate a python wrapper for this … Read more
You are probably looking for System.Guid.NewGuid().
For what it’s worth, I’ve written a set of C# utilities that register/unregister a .NET type (should be marked as ComVisible of course) in user’s registry without requiring regasm, nor UAC prompts, you can use it like this: // register into current user registry, needs no specific rights ComUtilities.RegisterComObject(ComUtilities.Target.User, typeof(MyClass)); // unregister from user registry, … Read more
A message box pumps a message loop. That’s something you can take advantage of, it allows you to inject code with Control.BeginInvoke() that runs as soon as the message box appears. You can then use that code to find the dialog window and close it. Add a new class to your project and paste this … Read more
There’s no direct way you can do this. Since you can’t port the VB6 inproc dll I’d suggest you write a 32bit out of process server that implements the same interfaces and have it delegate down to the VB6 code. Then, your 64bit app can call the out of process server as COM will take … Read more
This exception can be a DLL Hell problem. But the simplest explanation is for what’s missing from your snippet. Your Main() method is missing the [STAThread] attribute. That’s an important attribute that matters when you use COM objects in your code. Most of them are not thread-safe and they require a thread that’s a hospitable … Read more
The issue is often that the context for which the Active Directory calls is made is under a user that does not have permissions (also can happen when identity impersonate=”true” in ASP.NET, due to the fact that the users token is a “secondary token” that cannot be used when authenticating against another server from: https://social.technet.microsoft.com/Forums/en-US/f188029c-51cf-4b50-966a-eee7160d0353/an-operations-error-occured). … Read more
If you are using .net 4 or later, and therefore can make use of dynamic, you can do this quite simply. Here’s an example that uses the Excel automation interface. Type ExcelType = Type.GetTypeFromProgID(“Excel.Application”); dynamic ExcelInst = Activator.CreateInstance(ExcelType); ExcelInst.Visible = true; If you can’t use dynamic then it’s much more messy. Type ExcelType = Type.GetTypeFromProgID(“Excel.Application”); … Read more
There’s some virtue in FinalReleaseComObject, it will crash your program quicker. “COM object that has been separated from its underlying RCW cannot be used” is the CLR telling you that you taking care of COM reference counts yourself instead of leaving it up the CLR was a mistake. Your mileage may vary, you cannot really … Read more
I took a shot at deploying an automation add-in over the weekend. It turns out that it is enormously complicated (not a surprise to you!) and I could find absolutely no sources on the internet on how to do this properly. None. There are sources that describe how to use RegAsm, but none how to … Read more