Public/Display/Set-DisRes.ps1

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<#
.SYNOPSIS
Sets the Primary Display Screen Resolution
 
.DESCRIPTION
Sets the Primary Display Screen Resolution
 
.LINK
https://osd.osdeploy.com/module/functions/display/set-disres
 
.NOTES
21.2.1 Initial Release
 
#>

function Set-DisRes {
    [CmdletBinding()]
    param (
        [Parameter(Position = 0)]
        [Alias('Horizontal')]
        [string]$Width,

        [Parameter(Position = 1)]
        [Alias('Vertical')]
        [string]$Height
    )

$Code = @"
using System;
using System.Runtime.InteropServices;
namespace Resolution
{
    [StructLayout(LayoutKind.Sequential)]
    public struct DEVMODE1
    {
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string dmDeviceName;
        public short dmSpecVersion;
        public short dmDriverVersion;
        public short dmSize;
        public short dmDriverExtra;
        public int dmFields;
        public short dmOrientation;
        public short dmPaperSize;
        public short dmPaperLength;
        public short dmPaperWidth;
        public short dmScale;
        public short dmCopies;
        public short dmDefaultSource;
        public short dmPrintQuality;
        public short dmColor;
        public short dmDuplex;
        public short dmYResolution;
        public short dmTTOption;
        public short dmCollate;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string dmFormName;
        public short dmLogPixels;
        public short dmBitsPerPel;
        public int dmPelsWidth;
        public int dmPelsHeight;
        public int dmDisplayFlags;
        public int dmDisplayFrequency;
        public int dmICMMethod;
        public int dmICMIntent;
        public int dmMediaType;
        public int dmDitherType;
        public int dmReserved1;
        public int dmReserved2;
        public int dmPanningWidth;
        public int dmPanningHeight;
    };
    class User_32
    {
        [DllImport("user32.dll")]
        public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE1 devMode);
        [DllImport("user32.dll")]
        public static extern int ChangeDisplaySettings(ref DEVMODE1 devMode, int flags);
        public const int ENUM_CURRENT_SETTINGS = -1;
        public const int CDS_UPDATEREGISTRY = 0x01;
        public const int CDS_TEST = 0x02;
        public const int DISP_CHANGE_SUCCESSFUL = 0;
        public const int DISP_CHANGE_RESTART = 1;
        public const int DISP_CHANGE_FAILED = -1;
    }
    public class PrmaryScreenResolution
    {
        static public string ChangeResolution(int width, int height)
        {
            DEVMODE1 dm = GetDevMode1();
            if (0 != User_32.EnumDisplaySettings(null, User_32.ENUM_CURRENT_SETTINGS, ref dm))
            {
                dm.dmPelsWidth = width;
                dm.dmPelsHeight = height;
                int iRet = User_32.ChangeDisplaySettings(ref dm, User_32.CDS_TEST);
                if (iRet == User_32.DISP_CHANGE_FAILED)
                {
                    return "Unable To Process Your Request. Sorry For This Inconvenience.";
                }
                else
                {
                    iRet = User_32.ChangeDisplaySettings(ref dm, User_32.CDS_UPDATEREGISTRY);
                    switch (iRet)
                    {
                        case User_32.DISP_CHANGE_SUCCESSFUL:
                            {
                                return "DisRes successfully changed the Display Resolution";
                            }
                        case User_32.DISP_CHANGE_RESTART:
                            {
                                return "DisRes needs to restart to change the Display Resolution";
                            }
                        default:
                            {
                                return "DisRes failed to change the Display Resolution";
                            }
                    }
                }
            }
            else
            {
                return "Failed To Change The Resolution.";
            }
        }
        private static DEVMODE1 GetDevMode1()
        {
            DEVMODE1 dm = new DEVMODE1();
            dm.dmDeviceName = new String(new char[32]);
            dm.dmFormName = new String(new char[32]);
            dm.dmSize = (short)Marshal.SizeOf(dm);
            return dm;
        }
    }
}
"@
 
    Add-Type $Code -ErrorAction SilentlyContinue

    #Check if we need to Restore the previous settings
    if ($Width -eq 'Restore')  {
        if ($null -eq $Global:SetDisRes) {
            Write-Warning "Unable to Restore previous Display Settings"
            Break
        } else {
            $Width = $Global:SetDisRes.Width;
            $Height = $Global:SetDisRes.Height;
        }
    } else {
        #Set a Restore only for this PowerShell session
        $Global:SetDisRes = Get-DisplayPrimaryBitmapSize
    }
    
    if ($Width -and $Height) {
        #Do Nothing
    } elseif ($Width) {
        if ($Width -eq '720p')  {[int]$Width = 1280;[int]$Height = 720}
        if ($Width -eq '1080p') {[int]$Width = 1920;$Height = 1080}
        if ($Width -eq '4k')    {[int]$Width = 3840;$Height = 2160}

        if ($Width -eq 1280) {$Height = 600}    #2.13333333333333
        if ($Width -eq 1280) {$Height = 768}    #1.66666666666667
        if ($Width -eq 1280) {$Height = 800}    #1.6
        if ($Width -eq 1280) {$Height = 1024}   #1.25
        if ($Width -eq 1360) {$Height = 768}    #1.77083333333333
        if ($Width -eq 1366) {$Height = 768}    #1.77864583333333
        if ($Width -eq 1440) {$Height = 900}    #1.6
        if ($Width -eq 1680) {$Height = 1050}   #1.6
        if ($Width -eq 1920) {$Height = 1200}   #1.6
        if ($Width -eq 2560) {$Height = 1600}   #1.6
        if ($Width -eq 2560) {$Height = 2048}   #1.25
        if ($Width -eq 5120) {$Height = 1440}   #3.55555555555555

        #4:3
        if ($Width -eq 800)  {$Height = 600}    #4:3
        if ($Width -eq 1024) {$Height = 768}    #4:3
        if ($Width -eq 1152) {$Height = 864}    #4:3
        if ($Width -eq 1280) {$Height = 960}    #4:3
        if ($Width -eq 1400) {$Height = 1050}   #4:3
        if ($Width -eq 1600) {$Height = 1200}   #4:3
        if ($Width -eq 1792) {$Height = 1344}   #4:3
        if ($Width -eq 1856) {$Height = 1392}   #4:3
        if ($Width -eq 1920) {$Height = 1440}   #4:3
        if ($Width -eq 2048) {$Height = 1536}   #4:3
        if ($Width -eq 2560) {$Height = 1920}   #4:3

        #16:9
        if ($Width -eq 1280) {$Height = 720}    #16:9
        if ($Width -eq 1600) {$Height = 900}    #16:9
        if ($Width -eq 1920) {$Height = 1080}   #16:9
        if ($Width -eq 2048) {$Height = 1152}   #16:9
        if ($Width -eq 3840) {$Height = 2160}   #16:9

        Write-Verbose "Height (Vertical Resolution) was automatically set to $Height"
    } elseif ($Height) {
        Write-Warning "Height (Vertical Resolution) was not set"
        Break
    } else {
        #Set Defauts
        [int]$Width = 1920
        [int]$Height = 1080
    }

    [int]$IntWidth = $Width
    [int]$IntHeight = $Height

    Write-Verbose "Width: $IntWidth"
    Write-Verbose "Height: $IntHeight"

    $Result = [Resolution.PrmaryScreenResolution]::ChangeResolution([int]$IntWidth,[int]$IntHeight) 
    
    if ($Result -eq 'DisRes successfully changed the Display Resolution') {
        #Do Nothing
    } else {
        Write-Warning "$Result"
    }
}