Powershell Screen Resolution in Win11

Question

I would like to get the screen resolution of all my monitors; I require this info for an application.

I've tried:

Add-Type -AssemblyName System.Windows.Forms
$result = [System.Windows.Forms.Screen]::AllScreens
$result 

With the following results:

WorkingArea={X=-3840,Y=512,Width=2560,Height=1528} while I expect 2560 x 1600. WorkingArea={X=0,Y=0,Width=2880,Height=1728} while I expect 1920 x 1200.

How can I get the expected resolutions through PowerShell?

Update:

The proposed solutions don't work as expected, unfortunately:

Add-Type -AssemblyName System.Windows.Forms

[System.Windows.Forms.Screen]::AllScreens | 
  ForEach-Object { '{0} x {1}' -f $_.Bounds.Width, $_.Bounds.Height } 

Output:

2560 x 1600 
2880 x 1620

And

$height = (((Get-WmiObject -Class Win32_VideoController).VideoModeDescription  -split '\n')[0]  -split ' ')[2]
$width = (((Get-WmiObject -Class Win32_VideoController).VideoModeDescription  -split '\n')[0]  -split ' ')[0]
echo $width, $height

Output:

1920 1200

The real resolutions are ("empfohlen" means recommended):

• Primary screen (monitor):

• Secondary one:

Their arrangement is:

Answer 1

^{Note: I'm offering this as a general solution; you state that the first solution below doesn't report the correct resolution for one of your displays, but it is unclear why.}

It looks like your intent is to get the display resolution^[1] of all currently connected displays in the form of a '<horizontal-pixels> x <vertical-pixels>' string, e.g. '2560 x 1600'

[System.Windows.Forms.Screen]::AllScreens is indeed the right class to use, but you want the .Bounds property of each [Screen] instance returned, not the .WorkingArea property (the latter describes the rectangle comprising "the desktop area of the display, excluding taskbars, docked windows, and docked tool bars."):

Add-Type -AssemblyName System.Windows.Forms

[System.Windows.Forms.Screen]::AllScreens | 
  ForEach-Object { '{0} x {1}' -f $_.Bounds.Width, $_.Bounds.Height } 

---

An alternative is to use the third-party DisplayConfig module (which is Windows-only, just like the WinForms solution above),^[2] which you can install with, e.g.,
Install-Module -Scope CurrentUser DisplayConfig:

# ->, e.g., '2560 x 1600', '2880 x 1800'
Get-DisplayInfo | ForEach-Object { '{0} x {1}' -f $_.Mode.Width, $_.Mode.Height }

---

^{[1] Note that the solutions in this answer report the software-based resolution (the current video mode), which typically, but not always, is the same as the display-native resolution.}

^{[2] Specifically, the module is built on top of the Windows CCD (Connecting and Configuring Displays) APIs.}

Answer 2

The following calls user32.dll

enum SystemMetric
  {
    SM_CXSCREEN            = 0  # 0x00
    SM_CYSCREEN            = 1  # 0x01
    SM_CXVSCROLL           = 2  # 0x02
    SM_CYHSCROLL           = 3  # 0x03
    SM_CYCAPTION           = 4  # 0x04
    SM_CXBORDER            = 5  # 0x05
    SM_CYBORDER            = 6  # 0x06
    SM_CXDLGFRAME          = 7  # 0x07
    SM_CXFIXEDFRAME        = 7  # 0x07
    SM_CYDLGFRAME          = 8  # 0x08
    SM_CYFIXEDFRAME        = 8  # 0x08
    SM_CYVTHUMB            = 9  # 0x09
    SM_CXHTHUMB            = 10 # 0x0A
    SM_CXICON              = 11 # 0x0B
    SM_CYICON              = 12 # 0x0C
    SM_CXCURSOR            = 13 # 0x0D
    SM_CYCURSOR            = 14 # 0x0E
    SM_CYMENU              = 15 # 0x0F
    SM_CXFULLSCREEN        = 16 # 0x10
    SM_CYFULLSCREEN        = 17 # 0x11
    SM_CYKANJIWINDOW           = 18 # 0x12
    SM_MOUSEPRESENT        = 19 # 0x13
    SM_CYVSCROLL           = 20 # 0x14
    SM_CXHSCROLL           = 21 # 0x15
    SM_DEBUG               = 22 # 0x16
    SM_SWAPBUTTON          = 23 # 0x17
    SM_CXMIN               = 28 # 0x1C
    SM_CYMIN               = 29 # 0x1D
    SM_CXSIZE              = 30 # 0x1E
    SM_CYSIZE              = 31 # 0x1F
    SM_CXSIZEFRAME         = 32 # 0x20
    SM_CXFRAME             = 32 # 0x20
    SM_CYSIZEFRAME         = 33 # 0x21
    SM_CYFRAME             = 33 # 0x21
    SM_CXMINTRACK          = 34 # 0x22
    SM_CYMINTRACK          = 35 # 0x23
    SM_CXDOUBLECLK         = 36 # 0x24
    SM_CYDOUBLECLK         = 37 # 0x25
    SM_CXICONSPACING           = 38 # 0x26
    SM_CYICONSPACING           = 39 # 0x27
    SM_MENUDROPALIGNMENT       = 40 # 0x28
    SM_PENWINDOWS          = 41 # 0x29
    SM_DBCSENABLED         = 42 # 0x2A
    SM_CMOUSEBUTTONS           = 43 # 0x2B
    SM_SECURE              = 44 # 0x2C
    SM_CXEDGE              = 45 # 0x2D
    SM_CYEDGE              = 46 # 0x2E
    SM_CXMINSPACING        = 47 # 0x2F
    SM_CYMINSPACING        = 48 # 0x30
    SM_CXSMICON            = 49 # 0x31
    SM_CYSMICON            = 50 # 0x32
    SM_CYSMCAPTION         = 51 # 0x33
    SM_CXSMSIZE            = 52 # 0x34
    SM_CYSMSIZE            = 53 # 0x35
    SM_CXMENUSIZE          = 54 # 0x36
    SM_CYMENUSIZE          = 55 # 0x37
    SM_ARRANGE             = 56 # 0x38
    SM_CXMINIMIZED         = 57 # 0x39
    SM_CYMINIMIZED         = 58 # 0x3A
    SM_CXMAXTRACK          = 59 # 0x3B
    SM_CYMAXTRACK          = 60 # 0x3C
    SM_CXMAXIMIZED         = 61 # 0x3D
    SM_CYMAXIMIZED         = 62 # 0x3E
    SM_NETWORK             = 63 # 0x3F
    SM_CLEANBOOT           = 67 # 0x43
    SM_CXDRAG              = 68 # 0x44
    SM_CYDRAG              = 69 # 0x45
    SM_SHOWSOUNDS          = 70 # 0x46
    SM_CXMENUCHECK         = 71 # 0x47
    SM_CYMENUCHECK         = 72 # 0x48
    SM_SLOWMACHINE         = 73 # 0x49
    SM_MIDEASTENABLED          = 74 # 0x4A
    SM_MOUSEWHEELPRESENT       = 75 # 0x4B
    SM_XVIRTUALSCREEN          = 76 # 0x4C
    SM_YVIRTUALSCREEN          = 77 # 0x4D
    SM_CXVIRTUALSCREEN         = 78 # 0x4E
    SM_CYVIRTUALSCREEN         = 79 # 0x4F
    SM_CMONITORS           = 80 # 0x50
    SM_SAMEDISPLAYFORMAT       = 81 # 0x51
    SM_IMMENABLED          = 82 # 0x52
    SM_CXFOCUSBORDER           = 83 # 0x53
    SM_CYFOCUSBORDER           = 84 # 0x54
    SM_TABLETPC            = 86 # 0x56
    SM_MEDIACENTER         = 87 # 0x57
    SM_STARTER             = 88 # 0x58
    SM_SERVERR2            = 89 # 0x59
    SM_MOUSEHORIZONTALWHEELPRESENT = 91 # 0x5B
    SM_CXPADDEDBORDER          = 92 # 0x5C
    SM_DIGITIZER           = 94 # 0x5E
    SM_MAXIMUMTOUCHES          = 95 # 0x5F
    SM_REMOTESESSION           = 0x1000 # 0x1000
    SM_SHUTTINGDOWN        = 0x2000 # 0x2000
    SM_REMOTECONTROL           = 0x2001 # 0x2001
    SM_CONVERTIBLESLATEMODE    = 0x2003
    SM_SYSTEMDOCKED        = 0x2004
  }


$Signature = @"
[DllImport("user32.dll")]public static extern int GetSystemMetrics(int smIndex);
"@

$addTypeSplat = @{
    MemberDefinition = $Signature
    Name = "GetSystemMetrics32"
    Namespace = 'Win32Functions'
    PassThru = $true
}
$GetSystemMetrics = Add-Type @addTypeSplat


$GetSystemMetrics::GetSystemMetrics([int][SystemMetric]::SM_CXFULLSCREEN)