ボリュームとパン

using System;
using System.Windows.Forms;
using System.IO;
using System.Drawing;
using Microsoft.DirectX.DirectSound;
using DS = Microsoft.DirectX.DirectSound;
using System.Runtime.InteropServices;
using System.Threading;


namespace Sound2
{
    /// <summary>
    /// Class1 の概要の説明です。
    /// </summary>
    public class SoundForm:Form
    {
        private Device device_;
        private DS.SecondaryBuffer secondaryBufferA_;

        //開くファイル
        private string fileName =@"i:\temp\test3.wav";

        private System.Windows.Forms.TrackBar volumeTrackBar;
        private System.Windows.Forms.TrackBar panTrackBar;


        public SoundForm()
        {
            InitializeComponent();

            volumeTrackBar.ValueChanged+=new EventHandler(volumeTrackBar_ValueChanged);
            panTrackBar.ValueChanged+=new EventHandler(panTrackBar_ValueChanged);

            this.Text="DirectSound";

            DSInitialize();
        }


        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(secondaryBufferA_ != null)
                {
                    secondaryBufferA_.Stop();
                    secondaryBufferA_.Dispose();
                }
                if(device_ != null)
                {
                    device_.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        private void InitializeComponent()
        {
            this.volumeTrackBar = new System.Windows.Forms.TrackBar();
            this.panTrackBar = new System.Windows.Forms.TrackBar();
            ((System.ComponentModel.ISupportInitialize)
                (this.volumeTrackBar)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)
                (this.panTrackBar)).BeginInit();
            this.SuspendLayout();
            //
            // volumeTrackBar
            //
            this.volumeTrackBar.LargeChange = 250;
            this.volumeTrackBar.Location = new System.Drawing.Point(16, 24);
            this.volumeTrackBar.Maximum = 0;
            this.volumeTrackBar.Minimum = -10000;
            this.volumeTrackBar.Name = "volumeTrackBar";
            this.volumeTrackBar.Size = new System.Drawing.Size(264, 42);
            this.volumeTrackBar.TabIndex = 0;
            this.volumeTrackBar.TickFrequency = 1000;
            //
            // panTrackBar
            //
            this.panTrackBar.LargeChange = 500;
            this.panTrackBar.Location = new System.Drawing.Point(16, 88);
            this.panTrackBar.Maximum = 10000;
            this.panTrackBar.Minimum = -10000;
            this.panTrackBar.Name = "panTrackBar";
            this.panTrackBar.Size = new System.Drawing.Size(256, 42);
            this.panTrackBar.TabIndex = 1;
            this.panTrackBar.TickFrequency = 1000;
            //
            // SoundForm
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 12);
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Controls.Add(this.panTrackBar);
            this.Controls.Add(this.volumeTrackBar);
            this.Name = "SoundForm";
            ((System.ComponentModel.ISupportInitialize)
                (this.volumeTrackBar)).EndInit();
            ((System.ComponentModel.ISupportInitialize)
                (this.panTrackBar)).EndInit();
            this.ResumeLayout(false);

        }

        private void DSInitialize()
        {
            device_ =new Device();


            //協調レベルの設定
            device_.SetCooperativeLevel(this,CooperativeLevel.Normal);

            //バッファについての情報設定クラス
            BufferDescription desc=new BufferDescription();

            desc.ControlVolume =true;
            desc.ControlPan =true;

            //セカンダリバッファを作成
            secondaryBufferA_ =
                new SecondaryBuffer(fileName,desc,device_);

            secondaryBufferA_.Play(0,0);
        }

        private void volumeTrackBar_ValueChanged(object sender, EventArgs e)
        {
            secondaryBufferA_.Volume = volumeTrackBar.Value;

        }

        private void panTrackBar_ValueChanged(object sender, EventArgs e)
        {
            secondaryBufferA_.Pan = panTrackBar.Value;
        }
    }

    public class Program
    {
        public static void Main()
        {
            Application.Run(new SoundForm());
        }
    }
}