分享一个优先级声音播放类

SPlayer

1 class SPlayer
2 {
3 private static SoundPriorities _lastPriority = SoundPriorities.Low;
4
5 public static bool Play(string wavPath, SoundPriorities priority)
6 {
7 if (string.IsNullOrEmpty(wavPath)) return false;
8 if (!File.Exists(wavPath)) return false;
9 if (!wavPath.EndsWith(".wav", StringComparison.OrdinalIgnoreCase)) return false;
10
11 if (priority >= _lastPriority)
12 {
13 Stop();
14 _lastPriority = priority;
15 return NativeMethods.PlaySoundA(wavPath, new IntPtr(), (int)(PlaySoundFlags.SND_ASYNC | PlaySoundFlags.SND_LOOP));
16 }
17
18 return false;
19 }
20
21 public static void Stop()
22 {
23 if (NativeMethods.PlaySoundA(null, new IntPtr(), 0))
24 _lastPriority = SoundPriorities.Low;
25 }
26 }
27
28 [Flags]
29 enum PlaySoundFlags : int
30 {
31 SND_SYNC = 0x0000,
32 SND_ASYNC = 0x0001,
33 SND_NODEFAULT = 0x0002,
34 SND_LOOP = 0x0008,
35 SND_NOSTOP = 0x0010,
36 SND_NOWAIT = 0x00002000,
37 SND_FILENAME = 0x00020000,
38 SND_RESOURCE = 0x00040004
39 }
40
41 enum SoundPriorities : int
42 {
43 Low = 0,
44 Normal = 1,
45 High = 2
46 }
47
48 [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
49 public struct HINSTANCE__
50 {
51
52 /// int
53 public int unused;
54 }
55
56 public partial class NativeMethods
57 {
58
59 /// Return Type: BOOL->int
60 ///pszSound: LPCSTR->CHAR*
61 ///hmod: HMODULE->HINSTANCE->HINSTANCE__*
62 ///fdwSound: DWORD->unsigned int
63 [System.Runtime.InteropServices.DllImportAttribute("winmm.dll", EntryPoint = "PlaySoundA")]
64 [return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)]
65 public static extern bool PlaySoundA([System.Runtime.InteropServices.InAttribute()] [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPStr)] string pszSound, System.IntPtr hmod, uint fdwSound);
66
67 }
雕虫小技啊，不足挂齿

，唯一要注意的是:

根据msdn文档所描述，该api（winmm:PlaySound)播放任意新声音文件会自动停止之前已播放的内容，所以...

当然这个类还可以写的更复杂，这个就不说了