private void beepRadioButton_CheckedChanged(object sender, EventArgs e)
 {
     // reset de wekker, want we veranderen het type
     wekker.Reset();
     alarmTextBox.Text = "";
     wekker            = new BeepWekker();
 }
 private void knipperRadioButton_CheckedChanged(object sender, EventArgs e)
 {
     wekker.Reset();
     alarmTextBox.Text = "";
     wekker            = new KnipperWekker(this);
 }
 public Form1()
 {
     InitializeComponent();
     wekker = new KnipperWekker(this);
     clockTimer.Start();
 }