Brightness adjust via scroll wheel

[ethanross1a]

HI Guys, this is way beyond me.

Back in Windows Xp, I found and used a script that could let me change brightness via Ctrl + Shift + Scroll wheel.

Is there a script that can do this properly in Windows 10?
Properly as in, not just reducing RGB color values, but actually changing the physical backlight. Same as dragging the windows brightness slider.

Any help is much appreciated.

Have a great weekend everyone!

[colt]

You could use this powershell code to control brightness if you are running on a laptop. I couldn't get it to run directly from autohotkey without throwing errors in powershell.

Code: Select all

;for 50% brightness
(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods).WmiSetBrightness(1,50)

[ethanross1a]

Yea I'm on a laptop.

So you mean this has to be entered via powershell?

can't be set to be controlled by scroll wheel via AHK for example?

[colt]

I tried to run the powershell command from autohotkey but it was throwing errors in powershell. This is probably due environmental variables when autohotkey is launching powershell vs when entered manually. It is possible just not readily apparent.

Alternatively, if there is a existing hotkey on your keyboard to change the brightness you could just remap the scroll wheel to press that key combo. If that key combo involves the "fn" function key then you will need to take a look at this thread https://autohotkey.com/board/topic/282-fn-key-on-a-notebook/

Code: Select all

^WheelUp::
	send ^u ;edit this per existing hotkey
	tooltip up
return
 
^WheelDown::
	send ^d ;edit this per existing hotkey
	tooltip down
return

[jeeswg]

Here are some links that might help you to write native AHK code for WmiMonitorBrightnessMethods.
Windows screen brightness fine tune (autohotkey) · GitHub
https://gist.github.com/krrr/3c3f1747480189dbb71f
windows - How to query GetMonitorBrightness from C# - Stack Overflow
https://stackoverflow.com/questions/18083982/how-to-query-getmonitorbrightness-from-c-sharp

And here are some other ideas re. getting/setting the brightness:
3 ways to dim the screen - AutoHotkey Community
https://autohotkey.com/boards/viewtopic.php?f=6&t=39580

@colt: Perhaps you need to specify the working directory parameter, when using Run.

Cheers.

[Chunjee]

I wrote something called IdleDim: https://www.mediafire.com/file/kctm67aw1543wzb/IdleDim.zip
src in .zip

Works via SetDeviceGammaRamp (https://msdn.microsoft.com/en-us/library/dd372194(v=vs.85).aspx)