Everybody is welcome to use, change and modify the project as they see fit.

There are a bunch of similar projects available, but they feel hard to use and are cluttered with too many options.

Grant the permission and relaunch the app for the change to take effect.

To access the preferences, simply launch the app again using Launchpad or any other method, and the preferences window will open.

The app keeps listening for keyboard shortcuts when you close the preferences window.

By default the application takes over the default brightness keys on a Mac keyboard, which are mapped to F14 and F15, respectively.

When pressing the keyboard shortcut in combination with Option Shift, the brightness changes in smaller increments, just like on a real Mac.

For the app to work, your display needs to support the DDCCI standard properly.

Most displays do, but there are some issues with Samsung displays (and possibly others), which do not implement the standard correctly.

Unfortunately, there is not much that can be done to remedy the situation.

Because of that, reading the initial brightness of the display is disabled by default, and when changing the brightness of a display for the first time, its initial brightness is set to 50.

You can enable reading the brightness from the display in the apps preferences, but do so at your own risk.

You can just downloadclone the repository and open srcExternalDisplayBrightness.xcodeproj to start making changes.

This means the app cant be released on the Mac App Store, at least for now.

Monitor App For Brightness Control Free To Use

Feel free to use it in any of your projects, I hope it will be helpful to someone.

There is a bunch of login item managers available already, I implemented it in a way that you can bind the property isEnabled of the manager to a checkbox in Interface Builder through the included value transformer LoginItemCheckboxTransformer.

Unfortunately, Apple deprecated the APIs to access the login item list starting from Sierra, without offering any real alternative.

I hope these will keep working for at least a few more years, but eventually this will need to be rewritten to utilize the Service Management Framework, which will have the side effect of not showing the login item in System Preferences.

Before Sierra, the internal display brightness could be changed through IOKit, but after the introduction of Night Shift in 10.12.4 something changed and the brightness changes dont stick anymore.

This is one of the reasons the app works only on High Sierra and higher, because the new CoreDisplay APIs werent around in 10.12.3 and lower, and I didnt want to complicate the brightness changing logic too much.

The native popup with the brightness bars is displayed through some more private undocumented APIs, this time of the OSD framework.

Monitor App For Brightness Control How To Get The

You might find the code to load these private frameworks through CFBundle and NSBundle useful, it took me a while to figure out how to get the function pointers relatively safely, so maybe this will help you get there faster.

Mac Monitor App For Brightness Control