怎样循环播放声音

Question

<bgsound src="你的声音文件" loop="-1">

Answer 1

call win32 api playsound
////////////////////////////////////
try the following code in the correct places:[DllImport("user32.dll", EntryPoint="MessageBeep")]
private static extern bool Win32_MessageBeep(uint uType);
[DllImport("winmm.dll", EntryPoint="PlaySound")]
private static extern bool Win32_PlaySound(string pszSound, IntPtr hmod,
uint fdwSound);/// <summary>
/// Plays a standard Windows sound.
/// </summary>
/// <param name="beepStyle">The type of beep to play.</param>
public static void Beep(BeepStyle beepStyle)
{
 Win32_MessageBeep((uint) beepStyle);
}/// <summary>
/// Plays a wave audio file.
/// </summary>
/// <param name="path">The wave audio file to play.</param>
/// <param name="asynchronous">Determines if the file is played
asynchronously from execution of this thread.</param>
/// <param name="loop">Determines if playback loops.</param>
/// <param name="doNotStopPlay">Determines if previously played wave audio
is stopped before playing a new file.</param>
public static void PlaySound(string path, bool asynchronous, bool loop, bool
doNotStopPlay)
{
 Win32_PlaySound(path, IntPtr.Zero, (uint) ((asynchronous ?
PlaySoundMessage.SND_ASYNC : PlaySoundMessage.SND_SYNC) | (loop ?
PlaySoundMessage.SND_LOOP : 0) | (doNotStopPlay ?
PlaySoundMessage.SND_NOSTOP : 0) | PlaySoundMessage.SND_FILENAME));
}/// <summary>
/// Stops all wave audio played with the PlaySound method.
/// </summary>
public static void StopSound()
{
 Win32_PlaySound(null, IntPtr.Zero, 0);
}/// <summary>
/// Represents different beep styles.
/// </summary>
public enum BeepStyle
{
 PCSpeaker  = -1,
 Default   = 0x0,
 Error   = 0x10,
 Question  = 0x20,
 Warning   = 0x30,
 Information  = 0x40
}[Flags()]
internal enum PlaySoundMessage
{
 SND_SYNC  = 0x0000,
 SND_ASYNC  = 0x0001,
 SND_LOOP  = 0x0008,
 SND_NOSTOP  = 0x0010,
 SND_FILENAME = 0x00020000
}

Answer 2

很多人都漏掉一个参数
SND_PURGE = 0x40这个参数就是用来中止声音的播放的，在用SND_LOOP 之后就可以用SND_PURGE 中止声音了