Windows 10: What is this UI element called and how can I configure it?

^^What is this and why does it need to exist?

:)

 

is there any demand for a system configurator?

Processor(V) <--drop down arrow
-AMD(V)
--Socket(V)
---AM2(V)
----List of cpu's
---939(V)
----List of CPU's
-Intel(V)
--Socket(V)
---775(V)
----List of cpu's
---771(V)
----List of CPU's


etc etc.

 

Changing Windows UI Elements

I'm new to Windows 10 (Windows 10 Pro 20H2) and I've been trying to change some UI elements.

1. Registry.
Changing the value of "MenuBar" in "HKEY_CURRENT_USER\Control Panel\Colors" has no effect.
Why is that? Can I change the MenuBar background color somewhere else in the Registry?

2. Creating a theme.
I've followed the steps provided in Please Wait... | Cloudflare.
What tool should I use for editing the theme?
And when and why does UltraUXThemePatcher come in?

Thank you. I'd appreciate your help.

 

c# subtract elements of a list

I would put the start and finish times in a custom class then add an instance of the class to a List<class>. That way you only have one list and that one list contains everything relevant. If you want to go a step further, I would add an accessor called Duration that returns Finish - Start. Put it all together, you could do something like list[9].Duration to get how long task 9 took. Ideally, this custom class would contain everything relevant to the job (even the job itself) so this all happens in isolated code.

To remove elements from a list, use .Remove(index) or .Remove(copy of instance). If it is in a for loop, make sure to run the loop in reverse (i-1) otherwise it will freak out.

If this isn't homework and the code is something that can be made public, I could take a look and/or optimize it for you so you can see a working example of what I'm talking about.