C#调用winmm.dll来放音乐的示例

C#调用winmm.dll来放音乐的示例

 

using System;
using System.Text;
using System.Runtime.InteropServices;

namespace Music
{
    /**//// <summary>
    /// 
    /// </summary>
    public class Audio
    {
        [DllImport("winmm.dll")]
        private static extern int mciSendString 
            (
                string lpstrCommand,
                string lpstrReturnString,
                int uReturnLength,
                int hwndCallback
            );

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern int GetShortPathName
            (
                [MarshalAs(UnmanagedType.LPTStr)]    string path,
　                [MarshalAs(UnmanagedType.LPTStr)]    StringBuilder shortPath,
　                int shortPathLength
            ); 

        public Audio()
        {    

        }

        public void Play(string FileName)
        {
            StringBuilder shortPathTemp = new StringBuilder(255);
            int result = GetShortPathName(FileName, shortPathTemp, shortPathTemp.Capacity);
            string ShortPath = shortPathTemp.ToString();

            mciSendString("open "+ShortPath+" alias song","",0,0);
            mciSendString("play song","",0,0);
        }

        public void Stop()
        {
            mciSendString("stop song","",0,0);
        }

        public void Pause()
        {
            mciSendString("pause song","",0,0);
        }

        public void Close()
        {
            mciSendString("close song","",0,0);
        }
    }
}