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用winmm.dll播放wav文件，怎么知道wav文件播放时间长度？或者播放结束后有事件通知？

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用winmm.dll播放wav文件，怎么知道wav文件播放时间长度？或者播放结束后有事件通知？

发表于：2007-01-23 10:25:29 楼主

public class sound
{
public sound（)
{
//
// todo: 在此处添加构造函数逻辑
//
}

public static void play（ string strfilename, playsoundflags soundflags)
{
playsound（ strfilename, intptr.zero, soundflags);
// passes to playsound the filename and a pointer
// to the flag
}

[dllimport（ "winmm.dll ")] //inports the winmm.dll used for sound
private static extern bool playsound（ string szsound, intptr hmod, playsoundflags flags );
}
[flags] //enumeration treated as a bit field or set of flags
public enum playsoundflags: int
{
snd_sync = 0x0000, /* play synchronously （default) */
snd_async = 0x0001, /* play asynchronously */
snd_nodefault = 0x0002, /* silence （!default) if sound notfound */
snd_loop = 0x0008, /* loop the sound until nextsndplaysound */
snd_nostop = 0x0010, /* don 't stop any currently playingsound */
snd_nowait = 0x00002000, /* don 't wait if the driver is busy */
snd_filename = 0x00020000, /* name is file name */
snd_resource = 0x00040004 /* name is resource name or atom */
}

发表于：2007-06-13 16:53:421楼得分:0

帮顶一下,我近期也在找这个功能,读取媒体文件播放时间.

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