How to set Multi Threaded (MTA)?

[Ledi04]

How can I set COM Flags for a Game/Process Thread from Single Treaded (STA) to Multi Threaded (MTA)?

[diversenok]

Why would you want that?

[Ledi04]

testing purposes

[diversenok]

Well, it's up to the developer to choose the COM apartment type for each thread. See the second parameter passed to CoInitialzeEx. System Informer can only view the state, not change it.

[Ledi04]

https://techshelps.github.io/MSDN/COM/devdoc/live/com/api1_5iyg.htm
https://techshelps.github.io/MSDN/COM/devdoc/live/com/enums_4oqc.htm
https://techshelps.github.io/MSDN/COM/devdoc/live/com/com_98mr.htm

Do you know a way to change it somehow?

[diversenok]

Attaching a debugger, intercepting a call to CoInitializeEx, and changing the parameter, I suppose. Although, I don't expect it to work well beyond simple COM usage since STA and MTA threads are conceptually different: the first need to actively pump window messages, the second need to properly synchronize concurrent access.