C#利用微软DirectX做的视频播放器

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using Microsoft.DirectX.AudioVideoPlayback;

namespace playVideoProject

{

public partial class Form1 : Form

{

private Video myvideo = null;

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

openFile.InitialDirectory=Application.StartupPath;//获取对话框显示时的初始目录

if (openFile.ShowDialog() == DialogResult.OK)

{

// 记录panel组件的大小

int height = panel1.Height;

int width = panel1.Width;

// 如果存在打开的Video文件，释放它

if (myvideo != null)

{

myvideo.Dispose();

}

// 打开一个新的Video文件

myvideo = new Video(openFile.FileName);

// 把Video文件分配给创建的Panel组件

myvideo.Owner = panel1;

// 以记录的panel组件的大小来重新定义

panel1.Width = width;

panel1.Height = height;

// 播放AVI文件的第一帧，主要是为了在panel中显示

myvideo.Play();

myvideo.Pause();

}

//确定窗体中的各按钮状态

if (myvideo == null)

{

button2.Enabled = false;

button3.Enabled = false;

button4.Enabled = false;

}

else

{

button2.Enabled = true;

button3.Enabled = true;

button4.Enabled = true;

}

}

private void button3_Click(object sender, EventArgs e)

{

if (myvideo != null)

{

myvideo.Pause();

}

}

private void button2_Click(object sender, EventArgs e)

{

if (myvideo != null)

{

myvideo.Play();

}

}

private void Form1_Load(object sender, EventArgs e)

{

if (myvideo == null)

{

button2.Enabled = false;

button3.Enabled = false;

button4.Enabled = false;

}

else

{

button2.Enabled = true;

button3.Enabled = true;

button4.Enabled = true;

}

}

private void button4_Click(object sender, EventArgs e)

{

if (myvideo != null)

{

myvideo.Stop();

}

}

private void panel1_Paint(object sender, PaintEventArgs e)

{

}

}

}