PowerShell – Detect Autoscaling

# MrNetTek
# eddiejackson.net
# 7/15/2022
# free for public use
# free to claim as your own

#DETECT CURRENT AUTOSCALING
function Get-DisplayPrimaryScaling {
    [CmdletBinding()]
    param ()
  
    #Add-Type -Assembly System.Drawing
      # Get DPI Scaling
      #[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
  
    Add-Type @'
	using System;
	using System.Runtime.InteropServices;
	using System.Drawing;
 
public class DPI {
	[DllImport("gdi32.dll")]
	static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
 
public enum DeviceCap {
	VERTRES = 10,
	DESKTOPVERTRES = 117
}
 
public static float scaling() {
	Graphics g = Graphics.FromHwnd(IntPtr.Zero);
	IntPtr desktop = g.GetHdc();
	int LogicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.VERTRES);
	int PhysicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.DESKTOPVERTRES);
 
	return (float)PhysicalScreenHeight / (float)LogicalScreenHeight;
}
}
'@ -ReferencedAssemblies 'System.Drawing.dll' -ErrorAction Stop
    Return [DPI]::scaling() * 100
}
$ScreenScale = Get-DisplayPrimaryScaling
if ($ScreenScale -eq '100') {$ScreenScale='0'}
if ($ScreenScale -eq '125') {$ScreenScale='1'}
if ($ScreenScale -eq '150') {$ScreenScale='2'}
if ($ScreenScale -eq '175') {$ScreenScale='3'}
[System.Windows.MessageBox]::Show($ScreenScale)