Public Class DataWindow
    Public x As Double
 
    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles Timer1.Tick
        Me.BackgroundWorker2.RunWorkerAsync()
        x = x + 0.05
    End Sub
 
    Private Sub DataWindow_Load(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles MyBase.Load
        x = 0
        Timer1.Interval = 200
 
        Timer1.Start()
 
    End Sub
 
    Private Sub BackgroundWorker2_RunWorkerCompleted(ByVal sender As Object, _
      ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles _
      BackgroundWorker2.RunWorkerCompleted
        Me.Opacity = x
 
        If (x = 1) Then
            Debug.Print("ENDE")
            MsgBox("Das Fenster ist zu 100% sichtbar!")
            Timer1.Stop()
        End If
    End Sub
End Class

Blumen sind die sch?nste Sprache der Welt!
Visual Basic ist die aller sch?nste