What is a COM threading appartment?

Asked Apr 13 '21 at 13:30

Active Apr 13 '21 at 13:30

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I registered a COM object with pywin32.

win32com.server.register.UseCommandLine(TimeServer)

I understand an apartment is some conceptual framework of keeping the threads and objects together?

What is the point of apartments?

A quote from Mark Hammond's book on pywin32:

Each object lives in what COM terms a threading apartment, of which there are two types, free-threaded and single-threaded. A process can have zero or one free-threaded apartments and any number of single-threaded apartments (one for each thread with a single-threaded object).

I am assuming the object refers to thing I registered. What about the threads, are they the applications calling initializing this objects.

asked Apr 13 '21 at 13:30

Borut Flis

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Does this answer your question? [Could you explain STA and MTA?](https://stackoverflow.com/questions/127188/could-you-explain-sta-and-mta) – Simon Mourier Apr 13 '21 at 13:49
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Apartments are just threads, plus another one for objects that support multithreading. – user253751 Apr 13 '21 at 19:14
How does it connect to the COM object? Is the apartment the thread of the COM object? – Borut Flis Apr 15 '21 at 08:46

What is a COM threading appartment?

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