在WPF表单上执行最小化操作–PowerShell（版本5）

Question

I have PowerShell script that creates a WPF form from inserted XML code. This form will run on a kiosk station and has no window (so no maximize, minimize, or close buttons) and consumes the entire screen.

Even though the form itself has no window buttons, a person can still press the WIN key on a keyboard, get the task bar, right click on the form in the task bar and choose to minimize, maximize, or close for the form.

So, I set an action for close to lock the workstation (which is better option for this kiosk instead of preventing the form from closing at all) by doing this:

$form.Add_Closing({
    $shell = New-Object -ComObject "Wscript.Shell"
    $shell.Run("%windir%\System32\rundll32.exe user32.dll,LockWorkStation")
})

I would also like to do this for Minimize if possible, but can't seem to figure out how.

FYI. I'm not intending this to be a security feature per-se, but more so something that is better done then not for this kiosk station.

Answer 1

if $form is your form, then you could try this (wrapping the repetitive part in a function to stay DRY):

function Lock-Workstation {
    $shell = New-Object -ComObject "Wscript.Shell"
    $shell.Run("%windir%\System32\rundll32.exe user32.dll,LockWorkStation")    
}

$form.Add_Closing({ Lock-Workstation })

$form.Add_StateChanged({
    if($form.WindowState -eq "Minimized") {
        Lock-Workstation
    }
})

Since you don't want the window to be resized anyway, you could simply use:

$form.Add_StateChanged({ Lock-Workstation })