China DOS Union

It's about the input methods in the detailed information of Region and Language. Can you delete a specified input method among the ones you switch by pressing Ctrl+Shift? Take Smart ABC as an example. Once you run the input method, you can make Smart ABC disappear from it, and no matter how you press Ctrl+Shift, you won't switch to Smart ABC.

It doesn't matter even if other tools are used, as long as it can be achieved with a one-click BAT~

Check the registry: the following two branches:
Don't understand, do you want to not see it temporarily? Or not see it in the future?
HKEY_CURRENT_USER\Keyboard Layout\preload
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layouts

Download an imetool tool, which supports adding or removing input methods in command line mode

I don't want to see it in the future. That is, permanent deletion, which is just deleting it from the list. But if you want to use it, you can install or add it manually by yourself.

Reply to floor 4, have found that imetool can support batch processing. Thanks

But, even if it's done, let's strive for perfection. Can it be completed just relying on batch processing itself?

Rely by batch processing itself,,, it may not be possible. Without using IMETOOL, you can only modify the registry with batch processing

Modify the registry with batch processing. It is estimated that a restart may be required to take effect, and at least the explorer.exe process needs to be restarted

Don't restart the desktop, just restart the advanced text services.

I tried modifying the registry before and also restarted explorer, the items were gone from the list, but when switching, I could still switch to them.

Reply to floor 9, I don't know how to use batch processing to restart the advanced text service?

I'm afraid we need to use ASM programming. Then DEBUG...