Hide, Show, Minimize, Maximize, etc window from Powershell.

Set-WindowState.ps1

function Set-WindowState {
param(
    [Parameter()]
    [ValidateSet('FORCEMINIMIZE', 'HIDE', 'MAXIMIZE', 'MINIMIZE', 'RESTORE', 
                 'SHOW', 'SHOWDEFAULT', 'SHOWMAXIMIZED', 'SHOWMINIMIZED', 
                 'SHOWMINNOACTIVE', 'SHOWNA', 'SHOWNOACTIVATE', 'SHOWNORMAL')]
    [Alias('Style')]
    [String] $State = 'SHOW',
    
    [Parameter(ValueFromPipelineByPropertyname='True')]
    [System.IntPtr] $MainWindowHandle = (Get-Process –id $pid).MainWindowHandle,

    [Parameter()]
    [switch] $PassThru

)
BEGIN
{

$WindowStates = @{
    'FORCEMINIMIZE'   = 11
    'HIDE'            = 0
    'MAXIMIZE'        = 3
    'MINIMIZE'        = 6
    'RESTORE'         = 9
    'SHOW'            = 5
    'SHOWDEFAULT'     = 10
    'SHOWMAXIMIZED'   = 3
    'SHOWMINIMIZED'   = 2
    'SHOWMINNOACTIVE' = 7
    'SHOWNA'          = 8
    'SHOWNOACTIVATE'  = 4
    'SHOWNORMAL'      = 1
}
    
$Win32ShowWindowAsync = Add-Type –memberDefinition @” 
[DllImport("user32.dll")] 
public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow); 
“@ -name “Win32ShowWindowAsync” -namespace Win32Functions –passThru

}
PROCESS
{
    $Win32ShowWindowAsync::ShowWindowAsync($MainWindowHandle, $WindowStates[$State]) | Out-Null
    Write-Verbose ("Set Window State on '{0}' to '{1}' " -f $MainWindowHandle, $State)

    if ($PassThru)
    {
        Write-Output $MainWindowHandle
    }

}
END
{
}

}

Set-Alias -Name 'Set-WindowStyle' -Value 'Set-WindowState'

hey Nora - really great work here!

I ran into a few issues getting the gist to run on my Win 11 setup. To make it easier than finding minor changes in this thread, I posted a new repo here for your consideration. https://github.com/surfaceowl/Set-WindowState.ps1

There are three files there to help see the changes in steps-

1. Set-WindowState.ps1 -- directly from Nora's gist, for reference / diffs
2. Set-WindowState-v2-basic-fixes.ps1 -- corrects quote and dash chars that cause powershell errors on my install
3. Set-WindowState-v3-style-suggestions.ps1 -- building on v2, some minor order/style changes

Using Set-WindowState-v2-basic-fixes.ps1 as an example, once this function is referenced in your powershell profile you can run from your terminal anywhere with something like: Get-Process *Evernote* | Set-WindowState -State "MINIMIZE" ...that just finds all the instances of a process and then minimizes

This is super helpful for managing annoying recurring tasks in Task Scheduler you can put this in a script file (e.g. paste cmd above into a file named minimize_evernote.ps1 and setup a new task in Task Scheduler. The cmd below will run the script silently, importantly avoiding a quick pop-up or flash of a powershell window that some may find annoying or worrisome (especially if run at startup). Configure the task with:
Program/script: cmd
Add arguments:

/c start /min "" Powershell -WindowStyle Hidden -ExecutionPolicy Bypass -File "C:\Users\chris\dev\powershell_scripts\minimize_evernote.ps1"

(of course, change the line above to match whatever path and filename used on your system)