using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace HardWaresOperation
{
    public class SpeakerBeeper
    {
        //文件资源
        private string SoundSource = @"C:\Documents and Settings\Administrator\桌面\gc22002a.wav";
        private string SoundSource;
        public SpeakerBeeper(string _SoundSource)
        {
            SoundSource = _SoundSource;
        }
        /// <summary>
        /// 检查声卡，播放声音
        /// </summary>
        /// <param name="_SoundSource">声音文件</param>
        /// <returns>播放成功，返回true</returns>
        public bool SpeakerBeep()
        {
            if (SBHelper.waveOutGetNumDevs() != 0)
            {
                SBHelper.PlaySound(SoundSource, IntPtr.Zero, SBHelper.PlaySoundFlags.SND_FILENAME | SBHelper.PlaySoundFlags.SND_ASYNC);
                return true;
            }
            else
            {
                return false;
            }
        }
    }
    // 这是辅助的文件SBHelper.cs
    public class SBHelper
    {
        public enum PlaySoundFlags : int
        {
            SND_SYNC = 0x0000,//同步
            SND_ASYNC = 0x0001,//异步
            SND_NODEFAULT = 0x0002,//未找到文件默认为静音
            SND_MEMORY = 0x0004,//声音文件来自内存
            SND_LOOP = 0x0008, //循环播放
            SND_NOSTOP = 0x0010,//不停止目前的播放
            SND_NOWAIT = 0x00002000,//当播放器忙碌时不等待
            SND_ALIAS = 0x00010000, //为已注册的别名时
            SND_ALIAS_ID = 0x00110000, //别名为ID
            SND_FILENAME = 0x00020000, //文件名
            SND_RESOURCE = 0x00040004 //资源名
        }

        [DllImport(