How do you disable AltTab

I am trying to disable the AltTab command from my program, but can't figure anything out to do it, and there doesn't seem to be anything in VBworlds archives.

This code should disable all possible ways to escape (ctrl+alt+del, ctrl+esc, alt+tab, etc.):

Private Declare Function SystemParametersInfo Lib _
"user32" Alias "SystemParametersInfoA" (ByVal uAction _
As Long, ByVal uParam As Long, ByVal lpvParam As Any, _
ByVal fuWinIni As Long) As Long     

Sub DisableCtrlAltDelete(bDisabled As Boolean)
    Dim X As Long
    X = SystemParametersInfo(97, bDisabled, CStr(1), 0)
End Sub


Private Sub CmdDisable_Click()
     Call DisableCtrlAltDelete(True) 
End Sub

Private Sub CmdEnabled_Click()
     Call DisableCtrlAltDelete(False)
End Sub