more screen locking help

The following was the code the guy who responded earlier told me to use:

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Try using the LockWindowUpdate API function to lock all handles except your programs.

Private Declare Function LockWindowUpdate Lib "user32" (ByVal hwndLock As Long) As Long

Usage
'Lock/Freeze: LockWindowUpdate hwnd
'Unlock/Unfreeze: LockWindowUpdate 0&

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That will most likly work but I do have one question... How do I get the handles of all the other programs running? I mean the user could have any number of programs running at the time he starts mine... how do I get all their handles so I can lock them and leave mine the only one that is able to be clicked? Thanks in advance. Later,

-zer0 flaw

VB Code:

'Add this to a Module
Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Declare Function GetWindowTextLength Lib "user32" Alias "GetWindowTextLengthA" (ByVal hwnd As Long) As Long
Declare Function EnumWindows Lib "user32.dll" (ByVal lpEnumFunc As Long, ByVal lParam As Long) As Long
 
Public Function EnumWindowsProc(ByVal hwnd As Long, ByVal lParam As Long) As Long
    'The hwnd argument contains the handle of the window
    EnumWindowsProc = 1
End Function
 
'Use this line to Trigger it.
EnumWindows AddressOf EnumWindowsProc, 0