Fun with Sound

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace MCIDEMO

{   
    public delegate void MyDelegate(ref Message m);

    public partial class Form1 : Form
    {
        //// Declare the nofify constant
        public const int MM_MCINOTIFY = 953;
        Form2 f2;
        protected void mydelegate(ref Message m)
        {
            if (m.Msg == MM_MCINOTIFY)
            {
                // The file is done playing, do whatever
                System.Diagnostics.Debug.WriteLine(m.ToString());
            }
        }

        public void ProcessDelegate(MyDelegate d)
        {
            
        }



        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex < 0) return;
            string filename = (string)listBox1.SelectedItem;
            MciPlayer m = new MciPlayer(Application.StartupPath + @"\"+filename, filename);
            if (f2.Tag == null)
            {
                f2.Tag = filename;
                m.PlayFromStart(f2.Handle);
            }
            else
            {
                MessageBox.Show("Notifer is busy. Please try again!");
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            f2 = new Form2();
            f2.Left = this.Left + this.Width;
            f2.Top = this.Top;
            f2.Show();

            string apppath = Application.StartupPath;
            var files_mp3=System.IO.Directory.GetFiles(apppath,"*.mp3");
            var files_wav = System.IO.Directory.GetFiles(apppath, "*.wav");
            var files = new string[files_mp3.Length  + files_wav.Length];
            files_mp3.CopyTo(files, 0);
            files_wav.CopyTo(files, files_mp3.Length);
            foreach( var s in files)
            {
                var s1 = s.Substring(apppath.Length + 1);
                listBox1.Items.Add(s1);
              
            }
            

        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex < 0) return;
            string filename = (string)listBox1.SelectedItem;
            MciPlayer m = new MciPlayer(Application.StartupPath + @"\" + filename, filename);
            m.PlayFromStart();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex < 0) return;
            string filename = (string)listBox1.SelectedItem;
            if (filename.LastIndexOf(".wav") == filename.Length - 4)
            {
                MessageBox.Show("Repeat play for .wav file not supported");
                return;
            }
            MciPlayer m = new MciPlayer(Application.StartupPath + @"\" + filename, filename);
            m.PlayLoop();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex < 0) return;
            string filename = (string)listBox1.SelectedItem;
            MciPlayer m = new MciPlayer();
            m.Alias = filename;
            m.StopPlaying();
        }

        private void button5_Click(object sender, EventArgs e)
        {
            foreach (var s in listBox1.Items)
            {
                string filename = (string)s;
                MciPlayer m = new MciPlayer();
                m.Alias = filename;
                m.StopPlaying();
            }
        }
    }
   

}