/// <summary>
        /// Blendet die Form langsam ein
        /// </summary>
        public void showForm()
        {
            double i;

            this.Opacity = 0.1;
            this.Visible = true;

            // Intervall
            i = 0.03;
            // Sound asynchron laden und wiedergeben
            SoundClass soundPlayer = new SoundClass();
            soundPlayer.playSoundAsync(soundPlayer.currentSoundDir + "\\yaarrr.wav");

            // Solange durchlaufen bis Opacity = 1 (100%)
            while (this.Opacity < 1)
            {
                System.Threading.Thread.Sleep(25);
                // Opacity erhöhen
                this.Opacity += i;
                this.TopMost = true;
                Application.DoEvents();
            }
            this.TopMost = false;
            this.BringToFront();
            Application.DoEvents();
        }