Always on top batch script

Question

I have created a simple batch script to pseudo-lock a computer using the following code:

@ECHO OFF & setlocal ENABLEDELAYEDEXPANSION
setlocal EnableDelayedExpansion
color a
TITLE Lock
if not "%1" == "max" (
powershell -command "& { $x = New-Object -ComObject Shell.Application; $x.minimizeall() }"
start /MAX cmd /c %0 max & exit/b
)
:Lock 
echo Please enter a password to lock your computer . . .
powershell -Command $pword = read-host "Enter password" -AsSecureString ; $BSTR=[System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pword) ; [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR) > EOFlock.txt & set /p Pass1=<EOFlock.txt & del EOFlock.txt
TITLE Lock
taskkill /IM explorer.exe /F >nul
cls
echo Please type the password to unlock the computer . . .
:Locked 
set /p Pass2=
:Unlock 
if !Pass1! == !Pass2! (goto End)
goto Locked 
:End
start explorer.exe
echo This Computer is unlocked.

I want this window to stay on top, and preferably be unclosable until it has reached the end of the file. However, I did not find a way to do this yet.

Actually I don't think there is a way in pure batch... it might be possible with VBScript or JavaScript... is such is suitable for you, you should edit your post an add the respective tag(s)... — aschipfl, Sep 14 '15 at 05:52
Concerning an implementation in PowerShell, you might be interested in [this post](http://stackoverflow.com/a/12802050)... — aschipfl, Sep 14 '15 at 07:41
Instead of "pseudo-locking" the screen, why don't you actually [lock the screen](https://technet.microsoft.com/en-us/library/dd315249.aspx)? — Ansgar Wiechers, Sep 14 '15 at 18:42
@Dennis you might find [this answer](http://stackoverflow.com/a/37912693/1683264) useful if you're still looking. — rojo, Jun 19 '16 at 23:35

score 5 · Answer 1 · edited Nov 03 '17 at 18:22

You can call into PowerShell which in turn can call into the WinAPI... at least on Windows 8+ (7 might work too, previous versions probably not).

It's relatively straightforward:

Call PowerShell
Tell it to run independent of context
Use SetWindowPos to bring a window to the front
Use GetConsoleWindow to find out which window to act on

It all fits pretty neatly into a single command:

@powershell -ExecutionPolicy UnRestricted -Command "(Add-Type -memberDefinition \"[DllImport(\"\"user32.dll\"\")] public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x,int y,int cx, int xy, uint flagsw);\" -name \"Win32SetWindowPos\" -passThru )::SetWindowPos((Add-Type -memberDefinition \"[DllImport(\"\"Kernel32.dll\"\")] public static extern IntPtr GetConsoleWindow();\" -name \"Win32GetConsoleWindow\" -passThru )::GetConsoleWindow(),-1,0,0,0,0,67)"

Always on top batch script

1 Answers1

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