Question

C#调用mciSendString获取音乐文件的长度失败如题 谢谢了

调用API函数mciSendString播放音乐，能够播放，但获取音乐文件的长度失败！请看具体代码： public string GetTotalLengthString() { durLength = ""; durLength = durLength.PadLeft(128, Convert.ToChar(" ")); int i= WinApiClass.mciSendString("status song length", durLength, durLength.Length, 0); durLength = durLength.Trim(); if (string.IsNullOrEmpty(durLength)) { return "00:00"; } int Length = Convert.ToInt32(durLength) / 1000; int hour = Length / 3600; int min = (Length % 3600) / 60; int sec = (Length % 3600) % 60; string total = hour != 0 ? string.Format("{0:D2}:{1:D2}:{2:d2}", hour, min, sec) : string.Format("{0:D2}:{1:D2}", min, sec); return total; } 注意：回答人请拿出自己的东西，别复制乱七八糟的东西。可以随时联系我：2 4 6 0 9 5 5 4

Answer 1

你的API函数有没有加上[DllImport("winmm.dll",EntryPoint="mciSendString",CharSet=CharSet.Auto)]？