Tasten sperren

[Xenon808]

Tasten sperren
Ich habe gegooglet unt nichts gefunden.
Wie kann man sagen das wenn das programm geöffnet ist das z.b die taste "A" gesperrt ist?

[Prototyp.Ger]

Müsste das hier sein bin mir aber nicht sicher

Public Class Form1
 
  ' benötigte API-Deklarationen
  Private Declare Function GetAsyncKeyState Lib "user32" ( _
    ByVal vKey As Integer) As Short
  Private Declare Sub keybd_event Lib "user32" ( _
    ByVal bVk As Byte, _
    ByVal bScan As Byte, _
    ByVal dwFlags As Integer, _
    ByVal dwExtraInfo As Integer)
 
  Const KEYEVENTF_KEYUP = &H2
  Const VK_ESCAPE = &H1B
  Const VK_LWIN = &H5B
  Const VK_RWIN = &H5C
 
  ' Timer
  Dim WithEvents oTimer As Timer
  Private Sub Form1_Load(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles MyBase.Load
 
    ' Timer-Intervall einstellen und starten
    oTimer = New Timer
    oTimer.Interval = 10
    oTimer.Start()
  End Sub
  Private Sub Form1_FormClosing(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
 
    ' Timer stoppen
    oTimer.Stop()
  End Sub
  Private Sub oTimer_Tick(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles oTimer.Tick
 
    If CBool(GetAsyncKeyState(VK_LWIN) And 1) Or _
      CBool(GetAsyncKeyState(VK_RWIN) And 1) Then
 
      ' Wenn Windowstaste gedrückt, Escapetaste drücken...
      Call keybd_event(VK_ESCAPE, 0, 0, 0)
 
      ' ... und wieder loslassen
      Call keybd_event(VK_ESCAPE, 0, KEYEVENTF_KEYUP, 0)
    End If
  End Sub
End Class