Toggle capslock

AppleScript
#1

Is it possible to set the capslock key state using AppleScriptObjC or any shell script?

#2

You can build this project with Xcode.

And you can call this “setleds” command via AppleScript’s do shell script command.

スクリーンショット 2023-04-13 23.20.27

#3

Hi Takaaki, thank you for responding.

The note on the Github page says:

Setting the LED on or off does not affect the behavior of that key…

If I understand well, if the capslock is on, the shell will shut down the led but the key will remain on.
That’s the opposite of what I want.

#4

tell application “System Events” to keystroke 57

This code does not have effect to CAPS Lock LED and input text become CAPS.
I could not return input state.
Try this.

#5

Key code 57 does not do anything.
It’s a known issue.

Thanks anyway.

#6

Hmm…My Apple Magic Keyboard (JIS Key) respond this code.
It is strange…

#7

Interesting. Here it’s producing nothing.
I’m using a French version of Monterey.
But I’m not the only one whose facing this issue:

#8

My environment is macOS 13.4beta2 Japanese language environment.

Does the combination of OS Version + language + keyboard type make some difference about CAPS keycode?

I don’t have another language keyboard. So, I have nothing to do with this issue.

#9

See if this still works:

#10

It works for me. Although I’m not sure what this CAPS locking feature is useful for.

#11

This script is the one I was using for a couple of months.
But I noticed that it randomly fails to get the capslock state.

After some diving in the code, I think I’ve isolate the issue:
This script has the same problem than:

use framework "Foundation"
(current application's NSEvent's modifierFlags())

If you run the above script using any shortcut (⌘R in SD), the result will reflect the actual state the the capslock key. (1114112 when capslock is on, 1048576 otherwise)
But if you run it without any other modifier key (for example: by clicking on the ‘run’ button of SE or SD, or by choosing a menu item in FastScripts) the result will always be 0.

That said, what I’m looking for is simply disabling caps lock if it’s enabled.
It can be done like this:

set theScript to "ObjC.import(\"IOKit\");
ObjC.import(\"CoreServices\");

(() => {
    var ioConnect = Ref();
    var keystate = Ref();

    $.IOServiceOpen(
        $.IOServiceGetMatchingService(
            $.kIOMasterPortDefault,
            $.IOServiceMatching(
                $.kIOHIDSystemClass
            )
        ),
        $.mach_task_self_,
        $.kIOHIDParamConnectType,
        ioConnect
    );
    $.IOHIDSetModifierLockState(ioConnect, $.kIOHIDCapsLockState, 0);
    $.IOServiceClose(ioConnect);
	
})();"

run script theScript in "Javascript"

Thank you guys, especially to @CJK

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