Use. NET to achieve video playback

Video playback using DirectX technology to achieve playback, need to refer to the system C:\WINNT\system32\quartz.dll
It's from the CodeProject. A while ago see someone needs such a code, so paste it out to share.

Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Drawing;
Using System.Data;
Using System.Windows.Forms;
Using QuartzTypeLib;

Namespace Greystar.FrameWork.ToolKits
{
<summary>
Summary description of the FRMTV.
</summary>
public class FrmTV:System.Windows.Forms.UserControl
{
Private System.Windows.Forms.ToolBar toolBar1;
Private System.Windows.Forms.ToolBarButton ToolBarButton1;
Private System.Windows.Forms.ToolBarButton ToolBarButton2;
Private System.Windows.Forms.ToolBarButton ToolBarButton3;
Private System.Windows.Forms.Panel Panel1;
Private System.Windows.Forms.ImageList ImageList1;
Private System.Windows.Forms.Timer timer1;
Private System.Windows.Forms.ToolBarButton ToolBarButton4;
Private System.ComponentModel.IContainer components;

Private Const int WM_APP = 0x8000;
Private Const int wm_graphnotify = Wm_app + 1;
Private Const int ec_complete = 0x01;
Private Const int ws_child = 0x40000000;
Private Const int ws_clipchildren = 0x2000000;

Private Filgraphmanager m_objfiltergraph = null;
Private Ibasicaudio M_objbasicaudio = null;
Private Ivideowindow M_objvideowindow = null;
Private imediaevent m_objmediaevent = null;
Private Imediaeventex M_objmediaeventex = null;
Private imediaposition m_objmediaposition = null;
Private IMediaControl M_objmediacontrol = null;
Private System.Windows.Forms.StatusBar statusBar1;
Private System.Windows.Forms.StatusBarPanel StatusBarPanel1;
Private System.Windows.Forms.StatusBarPanel StatusBarPanel2;
Private System.Windows.Forms.StatusBarPanel statusBarPanel3;

Enum Mediastatus {None, Stopped, paused, Running};

Private Mediastatus m_currentstatus = Mediastatus.none;

Public FRMTV ()
{
This call is required for the Windows.Forms form designer.
InitializeComponent ();

TODO: Add any initialization after the InitializeComponent call

}
Public FRMTV (Envdte._dte dte,string Workpath)
{
InitializeComponent ();
This.mdte=dte;
This.mworkpath=workpath;
}
Private _dte Mdte=null;
Public _dte DTE
{
Set
{
Mdte=value;
}

Get
{
return mdte;
}
}

Working directory
private string Mworkpath=null;
public string Workpath
{
Set
{
This.mworkpath=value;
}
}
<summary>
Clean up all resources that are in use.
</summary>
protected override void Dispose (bool disposing)
{
if (disposing)
{
if (Components!= null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing);
}

Code generated #region Component Designer
<summary>
Designer supports the desired method-do not use the Code Editor
Modify the contents of this method.
</summary>
private void InitializeComponent ()
{
this.components = new System.ComponentModel.Container ();
System.Resources.ResourceManager resources = new System.Resources.ResourceManager (typeof (FRMTV));
THIS.TOOLBAR1 = new System.Windows.Forms.ToolBar ();
This.toolbarbutton4 = new System.Windows.Forms.ToolBarButton ();
This.toolbarbutton1 = new System.Windows.Forms.ToolBarButton ();
This.toolbarbutton2 = new System.Windows.Forms.ToolBarButton ();
This.toolbarbutton3 = new System.Windows.Forms.ToolBarButton ();
This.imagelist1 = new System.Windows.Forms.ImageList (this.components);
This.panel1 = new System.Windows.Forms.Panel ();
This.timer1 = new System.Windows.Forms.Timer (this.components);
THIS.STATUSBAR1 = new System.Windows.Forms.StatusBar ();
This.statusbarpanel1 = new System.Windows.Forms.StatusBarPanel ();
This.statusbarpanel2 = new System.Windows.Forms.StatusBarPanel ();
This.statusbarpanel3 = new System.Windows.Forms.StatusBarPanel ();
((System.ComponentModel.ISupportInitialize) (This.statusbarpanel1)). BeginInit ();
((System.ComponentModel.ISupportInitialize) (This.statusbarpanel2)). BeginInit ();
((System.ComponentModel.ISupportInitialize) (THIS.STATUSBARPANEL3)). BeginInit ();
This. SuspendLayout ();
//
ToolBar1
//
This.toolBar1.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
This.toolBar1.Buttons.AddRange (new system.windows.forms.toolbarbutton[] {
This.toolbarbutton4,
This.toolbarbutton1,
This.toolbarbutton2,
This.toolbarbutton3});
This.toolBar1.DropDownArrows = true;
This.toolBar1.ImageList = This.imagelist1;
This.toolBar1.Location = new System.Drawing.Point (0, 0);
This.toolBar1.Name = "ToolBar1";
This.toolBar1.ShowToolTips = true;
This.toolBar1.Size = new System.Drawing.Size (288, 28);
This.toolBar1.TabIndex = 0;
This.toolBar1.ButtonClick + = new System.Windows.Forms.ToolBarButtonClickEventHandler (This.toolbar1_buttonclick);
//
ToolBarButton4
//
This.toolBarButton4.ImageIndex = 3;
//
ToolBarButton1
//
this.toolBarButton1.Enabled = false;
This.toolBarButton1.ImageIndex = 0;
//
ToolBarButton2
//
this.toolBarButton2.Enabled = false;
This.toolBarButton2.ImageIndex = 1;
//
ToolBarButton3
//
this.toolBarButton3.Enabled = false;
This.toolBarButton3.ImageIndex = 2;
//
ImageList1
//
This.imageList1.ColorDepth = System.Windows.Forms.ColorDepth.Depth24Bit;
This.imageList1.ImageSize = new System.Drawing.Size (16, 16);
This.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer) (resources. GetObject ("Imagelist1.imagestream"));
This.imageList1.TransparentColor = System.Drawing.Color.Red;
//
Panel1
//
This.panel1.BackColor = System.Drawing.Color.Black;
This.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
This.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
This.panel1.Location = new System.Drawing.Point (0, 28);
This.panel1.Name = "Panel1";
This.panel1.Size = new System.Drawing.Size (288, 252);
This.panel1.TabIndex = 4;
//
Timer1
//
This.timer1.Enabled = true;
This.timer1.Tick + = new System.EventHandler (This.timer1_tick);
//
StatusBar1
//
This.statusBar1.Location = new System.Drawing.Point (0, 260);
This.statusBar1.Name = "StatusBar1";
This.statusBar1.Panels.AddRange (new system.windows.forms.statusbarpanel[] {
This.statusbarpanel1,
This.statusbarpanel2,
THIS.STATUSBARPANEL3});
This.statusBar1.ShowPanels = true;
This.statusBar1.Size = new System.Drawing.Size (288, 20);
This.statusBar1.TabIndex = 5;
//
StatusBarPanel1
//
This.statusBarPanel1.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Spring;
This.statusBarPanel1.BorderStyle = System.Windows.Forms.StatusBarPanelBorderStyle.None;
This.statusBarPanel1.Text = "Preparation";
This.statusBarPanel1.Width = 144;
//
StatusBarPanel2
//
This.statusBarPanel2.Alignment = System.Windows.Forms.HorizontalAlignment.Center;
This.statusBarPanel2.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Contents;
This.statusBarPanel2.Text = "00:00:00";
This.statusBarPanel2.Width = 64;
//
StatusBarPanel3
//
This.statusBarPanel3.Alignment = System.Windows.Forms.HorizontalAlignment.Center;
This.statusBarPanel3.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Contents;
This.statusBarPanel3.Text = "00:00:00";
This.statusBarPanel3.Width = 64;
//
Frmtv
//
This. BackColor = System.Drawing.SystemColors.Control;
This. Controls.Add (THIS.STATUSBAR1);
This. Controls.Add (THIS.PANEL1);
This. Controls.Add (THIS.TOOLBAR1);
This. Name = "FRMTV";
This. Size = new System.Drawing.Size (288, 280);
This. SizeChanged + = new System.EventHandler (this. frmtv_sizechanged);
((System.ComponentModel.ISupportInitialize) (This.statusbarpanel1)). EndInit ();
((System.ComponentModel.ISupportInitialize) (This.statusbarpanel2)). EndInit ();
((System.ComponentModel.ISupportInitialize) (THIS.STATUSBARPANEL3)). EndInit ();
This. ResumeLayout (FALSE);

}
#endregion

private void CleanUp ()
{
if (M_objmediacontrol!= null)
M_objmediacontrol.stop ();

M_currentstatus = mediastatus.stopped;

if (M_objmediaeventex!= null)
M_objmediaeventex.setnotifywindow (0, 0, 0);

if (M_objvideowindow!= null)
{
m_objvideowindow.visible = 0;
M_objvideowindow.owner = 0;
}

if (M_objmediacontrol!= null) M_objmediacontrol = NULL;
if (m_objmediaposition!= null) m_objmediaposition = NULL;
if (M_objmediaeventex!= null) M_objmediaeventex = NULL;
if (m_objmediaevent!= null) m_objmediaevent = NULL;
if (M_objvideowindow!= null) M_objvideowindow = NULL;
if (M_objbasicaudio!= null) M_objbasicaudio = NULL;
if (m_objfiltergraph!= null) m_objfiltergraph = NULL;
}

private void Toolbar1_buttonclick (object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
{
Switch (toolBar1.Buttons.IndexOf (E.button))
{
Case 0:
{
#region Open a file
OpenFileDialog OpenFileDialog = new OpenFileDialog ();
Openfiledialog.filter = "Media files|*.mpg;*.avi;*.wma;*.mov;*.wav;*.mp2;*.mp3| All Files|*.* ";

if (DialogResult.OK = = Openfiledialog.showdialog ())
{
CleanUp ();

M_objfiltergraph = new Filgraphmanager ();
M_objfiltergraph.renderfile (Openfiledialog.filename);

M_objbasicaudio = M_objfiltergraph as Ibasicaudio;

Try
{
M_objvideowindow = M_objfiltergraph as Ivideowindow;
M_objvideowindow.owner = (int) Panel1. Handle;
M_objvideowindow.windowstyle = Ws_child | Ws_clipchildren;
M_objvideowindow.setwindowposition (Panel1. Clientrectangle.left,
Panel1. Clientrectangle.top,
Panel1. Clientrectangle.width,
Panel1. Clientrectangle.height);
}
catch (Exception)
{
M_objvideowindow = null;
}

M_objmediaevent = M_objfiltergraph as imediaevent;

M_objmediaeventex = M_objfiltergraph as Imediaeventex;
M_objmediaeventex.setnotifywindow (int) this. handle,wm_graphnotify, 0);

M_objmediaposition = M_objfiltergraph as imediaposition;

M_objmediacontrol = M_objfiltergraph as IMediaControl;

This. Text = "DirectShow-[" + Openfiledialog.filename + "]";

M_objmediacontrol.run ();
M_currentstatus = mediastatus.running;

}
Break
#endregion

}
Case 1:
{
M_objmediacontrol.run ();
M_currentstatus = mediastatus.running;
Break
}

Case 2:
{
M_objmediacontrol.pause ();
M_currentstatus = mediastatus.paused;
Break
}

Case 3:
{
M_objmediacontrol.stop ();
m_objmediaposition.currentposition = 0;
M_currentstatus = mediastatus.stopped;
Break
}
}

Updatestatusbar ();
Updatetoolbar ();
}

private void Frmtv_sizechanged (object sender, System.EventArgs e)
{
if (M_objvideowindow!= null)
{
M_objvideowindow.setwindowposition (Panel1. Clientrectangle.left,
Panel1. Clientrectangle.top,
Panel1. Clientrectangle.width,
Panel1. Clientrectangle.height);
}
}

private void Timer1_Tick (object sender, System.EventArgs e)
{

if (M_currentstatus = = mediastatus.running)
{
Updatestatusbar ();
}
}
protected override void WndProc (ref message M)
{
if (m.msg = = wm_graphnotify)
{
int Leventcode;
int lParam1, LPARAM2;

while (true)
{
Try
{
M_objmediaeventex.getevent (out Leventcode,
Out LParam1,
Out LParam2,
0);

M_objmediaeventex.freeeventparams (Leventcode, lParam1, lParam2);

if (Leventcode = = Ec_complete)
{
M_objmediacontrol.stop ();
m_objmediaposition.currentposition = 0;
M_currentstatus = mediastatus.stopped;
Updatestatusbar ();
Updatetoolbar ();
}
}
catch (Exception)
{
Break
}
}
}

Base. WndProc (ref m);
}

private void Updatestatusbar ()
{
Switch (m_currentstatus)
{
Case MediaStatus.None:statusBarPanel1.Text = "Stop"; Break
Case MediaStatus.Paused:statusBarPanel1.Text = "suspend"; Break
Case MediaStatus.Running:statusBarPanel1.Text = "Play"; Break
Case MediaStatus.Stopped:statusBarPanel1.Text = "Stop"; Break
}

if (m_objmediaposition!= null)
{
int s = (int) m_objmediaposition.duration;
int h = s/3600;
int m = (S-(H * 3600))/60;
s = S-(h * 3600 + M * 60);

Statusbarpanel2.text = String.Format ("{0:d2}:{1:d2}:{2:d2}", H, M, s);

s = (int) m_objmediaposition.currentposition;
h = s/3600;
m = (S-(H * 3600))/60;
s = S-(h * 3600 + M * 60);

Statusbarpanel3.text = String.Format ("{0:d2}:{1:d2}:{2:d2}", H, M, s);
}
Else
{
Statusbarpanel2.text = "00:00:00";
Statusbarpanel3.text = "00:00:00";
}
}

private void Updatetoolbar ()
{
Switch (m_currentstatus)
{
Case MediaStatus.None:toolBarButton1.Enabled = false;
toolbarbutton2.enabled = false;
toolbarbutton3.enabled = false;
Break

Case MediaStatus.Paused:toolBarButton1.Enabled = true;
toolbarbutton2.enabled = false;
Toolbarbutton3.enabled = true;
Break

Case MediaStatus.Running:toolBarButton1.Enabled = false;
Toolbarbutton2.enabled = true;
Toolbarbutton3.enabled = true;
Break

Case MediaStatus.Stopped:toolBarButton1.Enabled = true;
toolbarbutton2.enabled = false;
toolbarbutton3.enabled = false;
Break
}
}


}
}