本文介绍了线程无法正常工作的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
//CLASS:BackGroundMusicGP
// CLASS: BackGroundMusicGP
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
namespace BackGroundMusicGP
{
class BkGrndMusic
{
private string _command;
private bool isOpen;
[DllImport("winmm.dll")]
private static extern long mciSendString(string strCommand,StringBuilder strReturn,int iReturnLength, IntPtr hwndCallback);
public void Close()
{
_command = "close MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = false;
}
public void Open(string sFileName)
{
_command = "open \"" + sFileName + "\" type mpegvideo alias MediaFile";
mciSendString(_command, null, 0, IntPtr.Zero);
isOpen = true;
}
public void Play(bool loop)
{
if(isOpen)
{
_command = "play MediaFile";
if (loop)
_command += " REPEAT";
mciSendString(_command, null, 0, IntPtr.Zero);
}
}
public void playMusic()
{
string path = "E:\\abc\\Habib.mp3";
string filename = Path.GetFileName(path);
Open(filename);
Play(false);
}
}
}
////////////////////////
///////////////////////////
public partial class Form1 : Form
{
BkGrndMusic objBkMusic;
int i = 0;
public Form1()
{
InitializeComponent();
objBkMusic = new BkGrndMusic();
}
private void button1_Click(object sender, EventArgs e)
{
Thread t = new Thread(new ThreadStart(objBkMusic.playMusic));
t.Start(); // it doesn't work
//objBkMusic.playMusic(); // it works
}
如何使用线程播放背景音乐?当我直接使用类的对象进行调用时,它将起作用.但是,当我使用线程调用时,它不起作用.
How can i play background music using thread? when i call directly using object of the class then it works. But when i call using thread it doesn''t work.
推荐答案
这篇关于线程无法正常工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!