Toggle Screen Brightness via resuming an app

toggle-screen-brightness.ps1

# Example applications:
# * Improves privacy by dimming screen to lowest brightness immediately
# * Extend battery life by toggling screen brightness (as a faster alternative to sleep/wake that doesn't locks the computer)
# ** Reduces carbon footprint

# Written in Powershell Core
# Load necessary .NET assembly
Add-Type -AssemblyName System.Windows.Forms

# Define the functions for Get-Brightness, Set-Brightness, and Toggle-Brightness

function Get-Brightness {
	# Create CIM Session
	$namespaceName = "root/wmi"

	# Get the CIM instance
	$instance = Get-CimInstance -Namespace $namespaceName -ClassName WmiMonitorBrightness

	# Print current brightness
	$currentBrightness = $instance.CurrentBrightness
	Write-Output "$currentBrightness"
}

function Set-Brightness ($brightness) {
	$namespaceName = "root/WMI"
	$className = "WmiMonitorBrightnessMethods"

	# Get the CIM instance 
	$instance = Get-CimInstance -Namespace $namespaceName -ClassName $className

	# Invoke the method with arguments
	$methodArgs = @{
		'Brightness' = $brightness  # Desired brightness level
		'Timeout' = 1  # The time period (in seconds) that the parameters should stay in effect.
	}
	Invoke-CimMethod -InputObject $instance -MethodName WmiSetBrightness -Arguments $methodArgs
}

function Toggle-Brightness {
    # Restore to original brightness
	if ((Get-Brightness) -eq 0) {
        if (Test-Path variable:Global:originalBrightness) {
            Set-Brightness $Global:originalBrightness
        } else {
            # Exception case handling
            Set-Brightness 10
        }
    # Set brightness to lowest
	} else {
		# Save the original brightness
		$Global:originalBrightness = Get-Brightness
		Set-Brightness 0
	}
}


# Create a windows form
$form = New-Object System.Windows.Forms.Form
$form.Text = 'Brightness Control'
$form.Size = New-Object System.Drawing.Size(0,0)
$form.MinimizeBox = $true
$form.WindowState = 'Minimized'

# Add Resize event to call the Toggle-Brightness function
$form.Add_Resize({
    if ($form.WindowState -eq 'Normal') {
		$form.WindowState = 'Minimized'
		Toggle-Brightness
    }
})

# Show the form
$form.ShowDialog()

toggle-screen-brightness.vbs

'Launch the program
Set WshShell = CreateObject("WScript.Shell") 
WshShell.Run "pwsh -WindowStyle Hidden -File 2_with_GUI_app_toggle.ps1", 0, False
Set WshShell = Nothing