multiple monitors

take_screenshot.ps1

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing") 
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
#[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.SystemParameters")

$bounds = [System.Windows.Forms.Screen]::PrimaryScreen
$w = $bounds.bounds.width#[System.Windows.SystemParameters]::VirtualScreenWidth
$h = $bounds.bounds.height#[System.Windows.SystemParameters]::VirtualScreenHeight

$img = New-Object System.Drawing.Bitmap($w, $h, [System.Drawing.Imaging.PixelFormat]::Format32bppArgb)

$cap = [System.Drawing.Graphics]::FromImage($img)
$cap.CopyFromScreen(0, 0, $bounds.Bounds.Size)

$img.Save("$env:USERPROFILE\screenshot.png", [System.Drawing.Imaging.ImageFormat]::Png)





#========================================================================================
<#
#get desktop width
$w = [System.Windows.SystemParameters]::VirtualScreenWidth
#get desktop height
$h = [System.Windows.SystemParameters]::VirtualScreenHeight
#construct bitmap (32bit RGBA)
$img = New-Object System.Drawing.Bitmap($w, $h, [System.Drawing.Imaging.PixelFormat]::Format32bppArgb)
#create graphics image from bitmap
$cap = [System.Drawing.Graphics]::FromImage($img)
#capture screen
$cap.CopyFromScreen(0, 0, [System.Drawing.Size]::new($w, $h))
#save captured image in png format
$img.Save("C:\screenshot.png", [System.Drawing.Imaging.ImageFormat]::Png)
#>
<# old
$bounds = [System.Windows.Forms.Screen]::PrimaryScreen
$w = [System.Windows.SystemParameters]::VirtualScreenWidth
$h = [System.Windows.SystemParameters]::VirtualScreenHeight

$img = New-Object System.Drawing.Bitmap($w, $h, [System.Drawing.Imaging.PixelFormat]::Format32bppArgb)

$cap = [System.Drawing.Graphics]::FromImage($img)
$cap.CopyFromScreen(0, 0, $bounds.Bounds.Size)

$img.Save("C:\test.png", [System.Drawing.Imaging.ImageFormat]::Png)
#>