With the Dell Display Manager dmm.exe there are command-line parameters to allow some remote control.
They are as follows:
ddm.exe /IncControl 10 //to increase brightness
ddm.exe /IncControl 12 //to increase contrast
ddm.exe /DecControl 10 //to decrease brightness
ddm.exe /DecControl 12 //to decrease contrast
The default with no second figure set is 1 or 1% – so in my example I use 5 for 5% like so:
ddm.exe /IncControl 10 5
To increase by 5%
I use the excellent Windows program AutoHotKey, which is free, to do this:
Here is my AutoHotKey script snippet:
#F2::Run "C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe" "/IncControl 10 5"
#F1::Run "C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe" "/DecControl 10 5"
This would assign WIN+F2 to Brighten by 5% and WIN+F1 to Dim by 5%
You can also do it with Windows natively using the built in shortcut method:
To create a shortcut using Windows native system Right click on the desktop (or where ever you want it) and chose New > Shortcut then enter the following in the Target: dialog field
"C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe" "/IncControl 10 5"
and choose the Shortcut you would like to use in the Shortcut key: dialog field. You will need to create two shortcuts; one for Inc and one for Dec.
It should be noted that the Dell Display Manager will need to be started and running in the background.