wince播放音频，c#开发

public class Sound
    {
        private byte[] m_soundBytes;
        private string m_fileName;

        private enum Flags
        {
            SND_SYNC = 0x0000,  /* play synchronously (default) */
            SND_ASYNC = 0x0001,  /* play asynchronously */
            SND_NODEFAULT = 0x0002,  /* silence (!default) if sound not found */
            SND_MEMORY = 0x0004,  /* pszSound points to a memory file */
            SND_LOOP = 0x0008,  /* loop the sound until next sndPlaySound */
            SND_NOSTOP = 0x0010,  /* don't stop any currently playing sound */
            SND_NOWAIT = 0x00002000, /* don't wait if the driver is busy */
            SND_ALIAS = 0x00010000, /* name is a registry alias */
            SND_ALIAS_ID = 0x00110000, /* alias is a predefined ID */
            SND_FILENAME = 0x00020000, /* name is file name */
            SND_RESOURCE = 0x00040004  /* name is resource name or atom */
        }



        [DllImport("CoreDll.DLL",EntryPoint="WCE_PlaySound", SetLastError = true)]
        private extern static int WCE_PlaySound(string szSound, IntPtr hMod, int flags);

        [DllImport("CoreDll.DLL", EntryPoint = "WCE_PlaySound", SetLastError = true)]
        private extern static int WCE_PlaySoundBytes(byte[] szSound, IntPtr hMod, int flags);

        ///

        /// Construct the Sound object to play sound data from the specified file.
        ///

        public Sound(string fileName)
        {
            m_fileName = fileName;
        }

        ///

        /// Construct the Sound object to play sound data from the specified stream.
        ///

        public Sound(Stream stream)
        {
            // read the data from the stream
            m_soundBytes = new byte[stream.Length];
            stream.Read(m_soundBytes, 0, (int)stream.Length);
        }

        ///

        /// Play the sound
        ///

        public void Play()
        {
            // if a file name has been registered, call WCE_PlaySound,
            //  otherwise call WCE_PlaySoundBytes
            if (m_fileName != null)
                WCE_PlaySound(m_fileName, IntPtr.Zero, (int)(Flags.SND_ASYNC | Flags.SND_FILENAME));
            else
                WCE_PlaySoundBytes(m_soundBytes, IntPtr.Zero, (int)(Flags.SND_ASYNC | Flags.SND_MEMORY));
        }
按照网友说的做的，调试出错。
无法找到 PInvoke DLL“CoreDll.DLL”中的入口点“WCE_PlaySound”
请教高手解答！

我把EntryPoint="WCE_PlaySound",
改成EntryPoint="PlaySound", 后不报错了。
调试通过，但是没有播放，没有声音。

private void btn1_Click(object sender, System.EventArgs e)
{
    Sound sound = new Sound(@"ResidentFlash\002.wav");
    sound.Play();
}

来人呢！！

mark

好像和音频文件有关，改用wince系统自带的wav文件就能播放。。奇怪了

没结果了，来人散分了。来者有份

这些函数都有返回值，看看这些返回值是什么错误！！

有没有暂停、停止的方法？