WinCE 播放声音的问题

Question

publicclass Sound
{
    privatebyte[] m_soundBytes;
    privatestring m_fileName;

    privateenum 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="PlaySound", SetLastError=true)]
    privateexternstaticint WCE_PlaySound(string szSound, IntPtr hMod, int flags);

    [DllImport("CoreDll.DLL", EntryPoint="PlaySound", SetLastError=true)]
    privateexternstaticint WCE_PlaySoundBytes (byte[] szSound, IntPtr hMod, int flags);

    ///<summary>/// Construct the Sound object to play sound data from the specified file.///</summary>public Sound (string fileName) {
        m_fileName = fileName;
    }

    ///<summary>/// Construct the Sound object to play sound data from the specified stream.///</summary>public Sound(Stream stream)    {
        // read the data from the stream
        m_soundBytes = newbyte [stream.Length];
        stream.Read(m_soundBytes, 0,(int)stream.Length);
    }

    ///<summary>/// Play the sound///</summary>publicvoid Play () {
        // if a file name has been registered, call WCE_PlaySound,//  otherwise call WCE_PlaySoundBytesif (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));
    }
播放声音完全参考的这个类，调用的时候直接 
  if (File.Exists(@"NandFlash\checkfail.wav"))
{
                Sound failsound = new Sound(@"NandFlash\checkfail.wav");
                failsound.Play();
            }
声音出不来
必须要在new Sound对象之前加上messagebox.show()才能出来声音，延迟System.Threading.Thread.Sleep(1000)也不行，求高手解答
环境：vs2005+C#，音频文件播放全部正常
           
    
     
     
    
     
      
    
     
     
        
        

Answer 1

你好，

建议你尝试一下.NET Compact Frame3.5 再试一试。

致礼

---

Jesse Jiang [MSFT]
MSDN Community Support | Feedback to us

Answer 2

是不是得不到程序的实列句柄造成的？

试试  sndPlaySound() API 函数