Zitat:

Und den Verweis von der Picturebox (Picture) auf meiner Form auf den in der Rubberbox bekomme ich wie? Da steh ich im Moment auf dem Schlauch

 Private Sub PictureBox_MouseMove(ByVal sender As System.Object, ByVal e As _
   System.Windows.Forms.MouseEventArgs) Handles PictureBox.MouseMove
        RubberBox.MouseMove(e)
    End Sub
 
    Private Sub PictureBox_MouseDown(ByVal sender As System.Object, ByVal e As _
      System.Windows.Forms.MouseEventArgs) Handles PictureBox.MouseDown
        RubberBox.MouseDown(e)
     End Sub
 
    Private Sub PictureBox_MouseUp(ByVal sender As System.Object, ByVal e As _
      System.Windows.Forms.MouseEventArgs) Handles PictureBox.MouseUp
        RubberBox.MouseUp()
    End Sub
 
    Private Sub frmPicture_Leave(ByVal sender As Object, ByVal e As _
      System.EventArgs) Handles MyBase.Leave
        RubberBox.Leave()
    End Sub
 
    Private Sub frmPicture_KeyDown(ByVal sender As Object, ByVal e As _
      System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
        RubberBox.KeyDown()
    End Sub