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Option Explicit

Private Sub cmdLock_Click()
If LockKeyboard(True) Then
cmdLock.Enabled = False
cmdUnLock.Enabled = True
End If
End Sub
Private Sub cmdUnLock_Click()
If LockKeyboard(False) Then
cmdLock.Enabled = True
cmdUnLock.Enabled = False
End If
End Sub
Private Sub Form_Load()
Dim bIsLock As Boolean
bIsLock = GetKeyboardState
cmdLock.Enabled = Not bIsLock
cmdUnLock.Enabled = bIsLock
End Sub
Option Explicit
Private Sub cmdLock_Click()
If LockKeyboard(True) Then
cmdLock.Enabled = False
cmdUnLock.Enabled = True
End If
End Sub
Private Sub cmdUnLock_Click()
If LockKeyboard(False) Then
cmdLock.Enabled = True
cmdUnLock.Enabled = False
End If
End Sub
Private Sub Form_Load()
Dim bIsLock As Boolean
bIsLock = GetKeyboardState
cmdLock.Enabled = Not bIsLock
cmdUnLock.Enabled = bIsLock
End Sub    
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Option Explicit
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#Const INC_OTHER_KEY = True
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Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function ReadProcessMemory Lib "kernel32" (ByVal hProcess As Long, ByVal lpBaseAddress As Long, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, ByVal lpBaseAddress As Long, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Function GlobalAddAtom Lib "kernel32" Alias "GlobalAd