Having [assembly: ComVisible(false)] and [assembly: Guid(“…”)] at the same time makes perfect sense in certain cases. You start with an empty assembly and will perhaps want to expose something from it to COM. So you mark the assembly as not ComVisible and later mark the entities to expose as ComVisible. That is why the GUID … Read more
The Unix model is built around the idea of lightweight processes that communicate with each other, through sockets, pipes, signals, and command lines. Historically, Unix didn’t have threads (the POSIX thread model is only about 10 years old IIRC), but processes on Unix have always been much cheaper than on Windows, so it was more … Read more
OLE = Object Linking and Embedding DDE = Dynamic Data Exchange COM = Component Object Model OLE: This is a method of linking parts of one document to parts of another. For example, having a PowerPoint slide with an Excel chart embedded into it. When the Excel spreadsheet is updated, the chart should update too. … Read more
I found this powershell one-liner script that supposedly lists all COM objects. gci HKLM:\Software\Classes -ea 0| ? {$_.PSChildName -match ‘^\w+\.\w+$’ -and (gp “$($_.PSPath)\CLSID” -ea 0)} | ft PSChildName let us know if it works!
It seems that stdole.dll is a primary interop assembly. See Office 2003 Primary Interop Assemblies on MSDN.
I ran into this issue not long ago. The short answer is that if you run a 32 bit application on a 64 bit machine then it’s registry keys are located under a Wow6432Node. For example, let’s say you have an application that stores its registry information under: HKEY_LOCAL_MACHINE\SOFTWARE\CompanyX If you compile your application as … Read more
OK I found the solution and I’ll write it here for the common good. Start VS2010 as administrator. Open a class library project (exmaple – MyProject). Add a new interface to the project (see example below). Add a using System.Runtime.InteropServices; to the file Add the attributes InterfaceType, Guid to the interface. You can generate a … Read more
The issue is described here: Is it safe to call an RCW from a finalizer? and here: Release Excel Object In My Destructor The trouble is that not only is the timing as to when these objects are to be garbage collected uncertain, but the order in which the finalizers are called is also nondeterministic. … Read more
If you need to support Windows OS versions prior to Win2k, then use MSXML3. Otherwise, use MSXML6. MSXML4 is in maintenance mode. MSXML5 was never actually supported for use outside of MS-Office. See: List of Microsoft XML Parser (MSXML) versions Using the right version of MSXML in Internet Explorer
regsvr32 will load the library and try to call the DllRegisterServer() from that library. It doesn’t care what DllRegisterServer() actually does – it just calls that function and checks the returned value. You use it to register COM servers in unmanaged DLLs. It can’t generate a .tlb file. regasm will register a COM-exposed .NET assembly … Read more