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DirectShow多媒体播放器进度条不走
发表在C#图书答疑
2010-04-28
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using QuartzTypeLib;
namespace bofang222
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
//设置常量
const int WM_APP = 0x8000;
const int WM_GRAPHNOTIFY = WM_APP + 1;
const int EC_COMPLETE = 0x01;
const int WS_CHILD = 0x40000000;
const int WS_CLIPCHILDREN = 0x2000000;
FilgraphManager m_objFilterGraph = null;
IBasicAudio m_objBasicAudio = null;
IVideoWindow m_objVidwoWindow = null;
IMediaEvent m_objMediaEvent = null;
IMediaEventEx m_obnMediaEventEx = null;
IMediaPosition m_objMediaPosition = null;
IMediaControl m_objMediaControl = null;
//枚举
enum MediaStatus { None, Stopped, Paused, Running };
MediaStatus m_CurrentStatus = MediaStatus.None;
private void Clear()
{
if (m_objMediaControl != null)
m_objMediaControl.Stop();
if (m_obnMediaEventEx != null)
m_obnMediaEventEx.SetNotifyWindow(0, 0, 0);
if(m_objVidwoWindow!=null)
{
m_objVidwoWindow.Visible = 0;
m_objVidwoWindow.Owner = 0;
}
if (m_objBasicAudio != null) m_objBasicAudio = null;
if (m_objFilterGraph != null) m_objFilterGraph = null;
if (m_objMediaControl != null) m_objMediaControl = null;
if (m_objMediaEvent != null) m_objMediaEvent = null;
if (m_objMediaPosition != null) m_objMediaPosition = null;
if (m_objVidwoWindow != null) m_objVidwoWindow = null;
if (m_obnMediaEventEx != null) m_obnMediaEventEx = null;
this.Text = "宋广阔做的多媒体播放器";
trackBar1.Value = 0;
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog openFile = new OpenFileDialog();
openFile.Filter = "选择播放文件|*.mpg;*.avi;*.mov;*.wma;*.wav;*.mp3|All Files|*.*";
if (DialogResult.OK == openFile.ShowDialog())
{
this.Clear(); //清理正在播放的文件
m_objFilterGraph = new FilgraphManager();
timer1.Enabled = true;
try
{
m_objFilterGraph.RenderFile(openFile.FileName);
m_objBasicAudio = m_objFilterGraph as IBasicAudio;//图像控制接口
m_objVidwoWindow = m_objFilterGraph as IVideoWindow; //声音控制接口
m_objVidwoWindow.Owner =(int) this.Handle;
//设置窗口类型
m_objVidwoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
//设置播放容器
m_objVidwoWindow.SetWindowPosition(this.ClientRectangle.Left, this.ClientRectangle.Top, this. ClientRectangle.Width, this.ClientRectangle.Height-60);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
//当出错时,为音频文件,将视频对象清空
m_objVidwoWindow = null;
}
m_objMediaEvent = m_objFilterGraph as IMediaEvent; //播放事件接口
m_obnMediaEventEx = m_objFilterGraph as IMediaEventEx; //扩展播放事件接口
m_obnMediaEventEx.SetNotifyWindow((int)this.Handle, WM_GRAPHNOTIFY, 0);
m_objMediaPosition = m_objFilterGraph as IMediaPosition; //播放位置和速度控制
m_objMediaControl = m_objFilterGraph as IMediaControl; //用来控制流媒体播放控制接口
this.Text = openFile.FileName +"----"+ this.Text;
m_objMediaControl.Run(); //播放文件
try
{
trackBar1.LargeChange = 1;
trackBar1.Maximum = (int)m_objMediaPosition.Duration;
timer1.Enabled = True;
}
catch { }
}
}
public void button2_Click(object sender, EventArgs e)
{
//播放
if (m_objMediaControl!=null)
m_objMediaControl.Run();
}
private void button3_Click(object sender, EventArgs e)
{
//暂停
m_objMediaControl.Pause();
}
private void button4_Click(object sender, EventArgs e)
{
//停止
m_objMediaControl.Stop();
m_objMediaPosition.CurrentPosition = 0;
this.Clear();
}
private void button5_Click(object sender, EventArgs e)
{
//快退
if (m_objMediaPosition.CurrentPosition >= 1)
m_objMediaPosition.CurrentPosition = m_objMediaPosition.CurrentPosition - 1;
else
m_objMediaPosition.CurrentPosition = 0;
}
private void button6_Click(object sender, EventArgs e)
{
//快进
int i = 0;
for (i = 0; i < 100; i++)
{
m_objMediaPosition.CurrentPosition = m_objMediaPosition.CurrentPosition + 1;
}
}
[font size=5][font color=#FF0000]private void timer1_Tick(object sender, EventArgs e)
{
trackBar1.Value = (int)m_objMediaPosition.CurrentPosition;
}[/font]
[/font]
private void trackBar1_Scroll(object sender, EventArgs e)
{
//根据滚动进度条,来播放文件
m_objMediaPosition.CurrentPosition = trackBar1.Value;
}
}
}
为什么就是 进度条不能自动走哪?请指点谢谢?还有在此程序的基础上怎样加入调节音量?盼高手急回!!!
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using QuartzTypeLib;
namespace bofang222
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
//设置常量
const int WM_APP = 0x8000;
const int WM_GRAPHNOTIFY = WM_APP + 1;
const int EC_COMPLETE = 0x01;
const int WS_CHILD = 0x40000000;
const int WS_CLIPCHILDREN = 0x2000000;
FilgraphManager m_objFilterGraph = null;
IBasicAudio m_objBasicAudio = null;
IVideoWindow m_objVidwoWindow = null;
IMediaEvent m_objMediaEvent = null;
IMediaEventEx m_obnMediaEventEx = null;
IMediaPosition m_objMediaPosition = null;
IMediaControl m_objMediaControl = null;
//枚举
enum MediaStatus { None, Stopped, Paused, Running };
MediaStatus m_CurrentStatus = MediaStatus.None;
private void Clear()
{
if (m_objMediaControl != null)
m_objMediaControl.Stop();
if (m_obnMediaEventEx != null)
m_obnMediaEventEx.SetNotifyWindow(0, 0, 0);
if(m_objVidwoWindow!=null)
{
m_objVidwoWindow.Visible = 0;
m_objVidwoWindow.Owner = 0;
}
if (m_objBasicAudio != null) m_objBasicAudio = null;
if (m_objFilterGraph != null) m_objFilterGraph = null;
if (m_objMediaControl != null) m_objMediaControl = null;
if (m_objMediaEvent != null) m_objMediaEvent = null;
if (m_objMediaPosition != null) m_objMediaPosition = null;
if (m_objVidwoWindow != null) m_objVidwoWindow = null;
if (m_obnMediaEventEx != null) m_obnMediaEventEx = null;
this.Text = "宋广阔做的多媒体播放器";
trackBar1.Value = 0;
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog openFile = new OpenFileDialog();
openFile.Filter = "选择播放文件|*.mpg;*.avi;*.mov;*.wma;*.wav;*.mp3|All Files|*.*";
if (DialogResult.OK == openFile.ShowDialog())
{
this.Clear(); //清理正在播放的文件
m_objFilterGraph = new FilgraphManager();
timer1.Enabled = true;
try
{
m_objFilterGraph.RenderFile(openFile.FileName);
m_objBasicAudio = m_objFilterGraph as IBasicAudio;//图像控制接口
m_objVidwoWindow = m_objFilterGraph as IVideoWindow; //声音控制接口
m_objVidwoWindow.Owner =(int) this.Handle;
//设置窗口类型
m_objVidwoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
//设置播放容器
m_objVidwoWindow.SetWindowPosition(this.ClientRectangle.Left, this.ClientRectangle.Top, this. ClientRectangle.Width, this.ClientRectangle.Height-60);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
//当出错时,为音频文件,将视频对象清空
m_objVidwoWindow = null;
}
m_objMediaEvent = m_objFilterGraph as IMediaEvent; //播放事件接口
m_obnMediaEventEx = m_objFilterGraph as IMediaEventEx; //扩展播放事件接口
m_obnMediaEventEx.SetNotifyWindow((int)this.Handle, WM_GRAPHNOTIFY, 0);
m_objMediaPosition = m_objFilterGraph as IMediaPosition; //播放位置和速度控制
m_objMediaControl = m_objFilterGraph as IMediaControl; //用来控制流媒体播放控制接口
this.Text = openFile.FileName +"----"+ this.Text;
m_objMediaControl.Run(); //播放文件
try
{
trackBar1.LargeChange = 1;
trackBar1.Maximum = (int)m_objMediaPosition.Duration;
timer1.Enabled = True;
}
catch { }
}
}
public void button2_Click(object sender, EventArgs e)
{
//播放
if (m_objMediaControl!=null)
m_objMediaControl.Run();
}
private void button3_Click(object sender, EventArgs e)
{
//暂停
m_objMediaControl.Pause();
}
private void button4_Click(object sender, EventArgs e)
{
//停止
m_objMediaControl.Stop();
m_objMediaPosition.CurrentPosition = 0;
this.Clear();
}
private void button5_Click(object sender, EventArgs e)
{
//快退
if (m_objMediaPosition.CurrentPosition >= 1)
m_objMediaPosition.CurrentPosition = m_objMediaPosition.CurrentPosition - 1;
else
m_objMediaPosition.CurrentPosition = 0;
}
private void button6_Click(object sender, EventArgs e)
{
//快进
int i = 0;
for (i = 0; i < 100; i++)
{
m_objMediaPosition.CurrentPosition = m_objMediaPosition.CurrentPosition + 1;
}
}
[font size=5][font color=#FF0000]private void timer1_Tick(object sender, EventArgs e)
{
trackBar1.Value = (int)m_objMediaPosition.CurrentPosition;
}[/font]
[/font]
private void trackBar1_Scroll(object sender, EventArgs e)
{
//根据滚动进度条,来播放文件
m_objMediaPosition.CurrentPosition = trackBar1.Value;
}
}
}
为什么就是 进度条不能自动走哪?请指点谢谢?还有在此程序的基础上怎样加入调节音量?盼高手急回!!!