关于调用winmm.dll播放wav的问题

Question

使用了toolbar，可以选择播放第几首歌曲。
请问该怎么使用？
我手头倒是有个例子，可是使用了之后提示 PInvoke堆栈不对称，然后我把
private static extern long mciSendString(string lpstrCommand,string lpstrReturnString,long length,long hwndcallback);
里的long都改成int,程序是可以运行了，但是点按钮之后不播放歌曲。

Answer 1

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace 播放音乐
{
    public enum PlaySoundFlags : int
    {
        SND_SYNC = 0x0, // play synchronously (default)
        SND_ASYNC = 0x1, // play asynchronously
        SND_NODEFAULT = 0x2, // silence (!default) if sound not found
        SND_MEMORY = 0x4, // pszSound points to a memory file
        SND_LOOP = 0x8, // loop the sound until next sndPlaySound
        SND_NOSTOP = 0x10, // don't stop any currently playing sound
        SND_NOWAIT = 0x2000, // don't wait if the driver is busy
        SND_ALIAS = 0x10000, // name is a registry alias
        SND_ALIAS_ID = 0x110000,// alias is a predefined ID
        SND_FILENAME = 0x20000, // name is file name
        SND_RESOURCE = 0x40004, // name is resource name or atom
    };
    class PlayMusic
    {
        public PlayMusic()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        //  [DllImport("winmm.dll")]
        //  private static extern long PlaySound(String fileName,long a,long b);

        public static void Play(string p_FileName)
        {
            try
            {
                mciSendString(@"close " + p_FileName, "                                  ", 0, 0);
                mciSendString(@"open " + p_FileName, "                                  ", 0, 0);
                mciSendString(@"play " + p_FileName, "                                  ", 0, 0);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

        }

        [DllImport("winmm.dll")]
        private static extern int mciSendString(string lpstrCommand, string lpstrReturnString, int length, int hwndcallback);

        /// <summary>
        /// 停止当前音乐播放
        /// </summary>
        /// <param name="fileName">音乐文件名称</param>
        public static void StopMusic(string fileName)
        {
            try
            {
                mciSendString(@"close " + fileName, "                                  ", 0, 0);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
    }
}

Answer 2

如果你只是播放wav文件
可以使用System.Media.SoundPlayer类
SoundPlayer splayer=new SoundPlayer(filename);
splayer.Play(); //播放
// splayer.PlayLooping();  循环播放
splayer.Stop();//停止

Answer 3

嗯，我刚试过了，你这种方法也可以播放。
我现在使用了toolbar和centextMenu,menuitem,ToolBarButton。
要能选择播放第几首歌，还可以播放暂停。
请问怎么判断？

Answer 4

问题解决了，谢谢

Answer 5

修改filename的值就可以指定播放你想要播放的歌
解决了就好，不用客气
Best Regards!