// Copyright (c) Microsoft Corporation. All rights reserved.
/* This sample application shows how to use the Windows Media Player control in
* Windows Forms. The control has been placed on Form1 from the Toolbox.
*
* Functionality demonstrated includes:
* -- using Player controls such as play, pause, stop, fastForward, fastReverse and currentPosition.
* -- getting properties for a media item, such as name, duration, and sourceURL.
* -- handling events from the Player, including error events.
* -- retrieving media items from the Library.
*
* Note about catching COMExceptions: In C++, calls to Windows Media Player SDK methods return HRESULTs. When a method
* returns a failed HRESULT, C++ code should check the value and respond accordingly. When using COM interop to call
* Windows Media Player SDK methods, failed HRESULTs are raised as COMExceptions. This sample code simply wraps each call
* to Windows Media Player in a try block and then displays an error message when a COMException is raised.
* For your own code, you should make decisions about how to handle such error conditions.
*
* Note about localization: This sample uses strings that assume the user is in the "en-US" culture.
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
using AxWMPLib;
using WMPLib;
namespace WMPCSharp
{
///
/// Summary description for Form1.
///
public class Form1 : System.Windows.Forms.Form
{
private AxWMPLib.AxWindowsMediaPlayer Player;
private System.Windows.Forms.Button btnPlayPause;
private System.Windows.Forms.Button btnStop;
private System.Windows.Forms.Button btnOpen;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label lblSongName;
private System.Windows.Forms.Label lblOpenState;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label lblPlayState;
private System.Windows.Forms.TrackBar tbSeek;
private System.Windows.Forms.Timer tmrPos;
private System.Windows.Forms.Label lblSourceURL;
private System.Windows.Forms.Label lblTime;
private System.Windows.Forms.Button btnFF;
private System.Windows.Forms.Button btnRew;
private System.Windows.Forms.Label label4;
private System.ComponentModel.IContainer components;
public Form1()
{
InitializeComponent();
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.Player = new AxWMPLib.AxWindowsMediaPlayer();
this.btnPlayPause = new System.Windows.Forms.Button();
this.btnStop = new System.Windows.Forms.Button();
this.btnOpen = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.lblSongName = new System.Windows.Forms.Label();
this.lblOpenState = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.lblPlayState = new System.Windows.Forms.Label();
this.tbSeek = new System.Windows.Forms.TrackBar();
this.tmrPos = new System.Windows.Forms.Timer(this.components);
this.lblSourceURL = new System.Windows.Forms.Label();
this.lblTime = new System.Windows.Forms.Label();
this.btnFF = new System.Windows.Forms.Button();
this.btnRew = new System.Windows.Forms.Button();
this.label4 = new System.Windows.Forms.Label();
((System.ComponentModel.ISupportInitialize)(this.Player)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.tbSeek)).BeginInit();
this.SuspendLayout();
//
// Player
//
this.Player.Enabled = true;
this.Player.Location = new System.Drawing.Point(24, 8);
this.Player.Name = "Player";
this.Player.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("Player.OcxState")));
this.Player.Size = new System.Drawing.Size(192, 152);
this.Player.TabIndex = 0;
this.Player.TabStop = false;
this.Player.PlayStateChange += new AxWMPLib._WMPOCXEvents_PlayStateChangeEventHandler(this.Player_PlayStateChange);
this.Player.OpenStateChange += new AxWMPLib._WMPOCXEvents_OpenStateChangeEventHandler(this.Player_OpenStateChange);
this.Player.MediaError += new AxWMPLib._WMPOCXEvents_MediaErrorEventHandler(this.Player_MediaError);
//
// btnPlayPause
//
this.btnPlayPause.Enabled = false;
this.btnPlayPause.Location = new System.Drawing.Point(24, 176);
this.btnPlayPause.Name = "btnPlayPause";
this.btnPlayPause.Size = new System.Drawing.Size(48, 23);
this.btnPlayPause.TabIndex = 1;
this.btnPlayPause.Text = "&Play";
this.btnPlayPause.Click += new System.EventHandler(this.btnPlayPause_Click);
//
// btnStop
//
this.btnStop.Enabled = false;
this.btnStop.Location = new System.Drawing.Point(72, 176);
this.btnStop.Name = "btnStop";
this.btnStop.Size = new System.Drawing.Size(48, 23);
this.btnStop.TabIndex = 2;
this.btnStop.Text = "&Stop";
this.btnStop.Click += new System.EventHandler(this.btnStop_Click);
//
// btnOpen
//
this.btnOpen.Location = new System.Drawing.Point(416, 128);
this.btnOpen.Name = "btnOpen";
this.btnOpen.TabIndex = 0;
this.btnOpen.Text = "&Open...";
this.btnOpen.Click += new System.EventHandler(this.btnOpen_Click);
//
// label1
//
this.label1.Location = new System.Drawing.Point(232, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(40, 24);
this.label1.TabIndex = 6;
this.label1.Text = "Song:";
//
// lblSongName
//
this.lblSongName.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblSongName.Location = new System.Drawing.Point(272, 16);
this.lblSongName.Name = "lblSongName";
this.lblSongName.Size = new System.Drawing.Size(224, 16);
this.lblSongName.TabIndex = 7;
//
// lblOpenState
//
this.lblOpenState.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblOpenState.Location = new System.Drawing.Point(312, 176);
this.lblOpenState.Name = "lblOpenState";
this.lblOpenState.Size = new System.Drawing.Size(192, 23);
this.lblOpenState.TabIndex = 11;
//
// label2
//
this.label2.Location = new System.Drawing.Point(248, 176);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(64, 16);
this.label2.TabIndex = 10;
this.label2.Text = "OpenState:";
//
// label3
//
this.label3.Location = new System.Drawing.Point(248, 200);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(64, 23);
this.label3.TabIndex = 12;
this.label3.Text = "Play State:";
//
// lblPlayState
//
this.lblPlayState.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblPlayState.Location = new System.Drawing.Point(312, 200);
this.lblPlayState.Name = "lblPlayState";
this.lblPlayState.Size = new System.Drawing.Size(192, 23);
this.lblPlayState.TabIndex = 13;
//
// tbSeek
//
this.tbSeek.Enabled = false;
this.tbSeek.Location = new System.Drawing.Point(8, 208);
this.tbSeek.Maximum = 100;
this.tbSeek.Name = "tbSeek";
this.tbSeek.Size = new System.Drawing.Size(224, 45);
this.tbSeek.TabIndex = 5;
this.tbSeek.TickFrequency = 0;
this.tbSeek.TickStyle = System.Windows.Forms.TickStyle.None;
this.tbSeek.Scroll += new System.EventHandler(this.tbSeek_Scroll);
//
// tmrPos
//
this.tmrPos.Interval = 250;
this.tmrPos.Tick += new System.EventHandler(this.tmrPos_Tick);
//
// lblSourceURL
//
this.lblSourceURL.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblSourceURL.Location = new System.Drawing.Point(272, 48);
this.lblSourceURL.Name = "lblSourceURL";
this.lblSourceURL.Size = new System.Drawing.Size(224, 64);
this.lblSourceURL.TabIndex = 9;
//
// lblTime
//
this.lblTime.Location = new System.Drawing.Point(72, 256);
this.lblTime.Name = "lblTime";
this.lblTime.Size = new System.Drawing.Size(96, 16);
this.lblTime.TabIndex = 12;
this.lblTime.Text = "00:00";
this.lblTime.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
//
// btnFF
//
this.btnFF.Enabled = false;
this.btnFF.Location = new System.Drawing.Point(168, 176);
this.btnFF.Name = "btnFF";
this.btnFF.Size = new System.Drawing.Size(48, 23);
this.btnFF.TabIndex = 4;
this.btnFF.Text = ">>";
this.btnFF.Click += new System.EventHandler(this.btnFF_Click);
//
// btnRew
//
this.btnRew.Enabled = false;
this.btnRew.Location = new System.Drawing.Point(120, 176);
this.btnRew.Name = "btnRew";
this.btnRew.Size = new System.Drawing.Size(48, 23);
this.btnRew.TabIndex = 3;
this.btnRew.Text = "<<";
this.btnRew.Click += new System.EventHandler(this.btnRew_Click);
//
// label4
//
this.label4.Location = new System.Drawing.Point(232, 48);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(32, 23);
this.label4.TabIndex = 8;
this.label4.Text = "URL:";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(520, 278);
this.Controls.Add(this.label4);
this.Controls.Add(this.btnRew);
this.Controls.Add(this.btnFF);
this.Controls.Add(this.lblTime);
this.Controls.Add(this.lblSourceURL);
this.Controls.Add(this.tbSeek);
this.Controls.Add(this.lblPlayState);
this.Controls.Add(this.label3);
this.Controls.Add(this.label2);
this.Controls.Add(this.lblOpenState);
this.Controls.Add(this.lblSongName);
this.Controls.Add(this.label1);
this.Controls.Add(this.btnOpen);
this.Controls.Add(this.btnStop);
this.Controls.Add(this.btnPlayPause);
this.Controls.Add(this.Player);
this.MaximizeBox = false;
this.Name = "Form1";
this.Text = "C# Windows Media Player Sample";
((System.ComponentModel.ISupportInitialize)(this.Player)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.tbSeek)).EndInit();
this.ResumeLayout(false);
}
#endregion
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
IWMPMedia theMedia = null; // Represents the current media to set.
///
/// Centralize UI state control.
///
/// State of the player
private void SetUIState(WMPPlayState newState)
{
bool canFF, canRew, canPlay, canPause, canSeek, canStop;
double fDuration;
try
{
canFF = Player.Ctlcontrols.get_isAvailable("fastForward");
canRew = Player.Ctlcontrols.get_isAvailable("fastReverse");
canPlay = Player.Ctlcontrols.get_isAvailable("Play");
canPause = Player.Ctlcontrols.get_isAvailable("Pause");
canSeek = Player.Ctlcontrols.get_isAvailable("currentPosition");
canStop = Player.Ctlcontrols.get_isAvailable("Stop");
fDuration = Player.currentMedia.duration;
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
return;
}
switch (newState)
{
case WMPPlayState.wmppsStopped:
btnStop.Enabled = canStop;
btnPlayPause.Enabled = canPlay;
btnPlayPause.Text = "&Play";
btnFF.Enabled = canFF;
btnRew.Enabled = canRew;
tmrPos.Stop();
tbSeek.Value = 0;
lblTime.Text = "00:00";
if(canSeek)
{
tbSeek.Enabled = true;
}
break;
case WMPPlayState.wmppsPlaying:
btnStop.Enabled = canStop;
btnPlayPause.Enabled = canPause;
btnPlayPause.Text = "&Pause";
btnFF.Enabled = canFF;
btnRew.Enabled = canRew;
if(canSeek)
{
tbSeek.Enabled = true;
}
if(fDuration > 0)
{
tmrPos.Start();
}
break;
case WMPPlayState.wmppsPaused:
btnStop.Enabled = canStop;
btnPlayPause.Enabled = canPlay;
btnPlayPause.Text = "&Play";
btnFF.Enabled = canFF;
btnRew.Enabled = canRew;
tmrPos.Stop();
if(canSeek)
{
tbSeek.Enabled = true;
}
break;
case WMPPlayState.wmppsReady:
btnStop.Enabled = false;
btnPlayPause.Enabled = false;
btnPlayPause.Text = "&Play";
btnFF.Enabled = false;
btnRew.Enabled = false;
tmrPos.Stop();
tbSeek.Value = 0;
tbSeek.Enabled = false;
lblTime.Text = "00:00";
break;
case WMPPlayState.wmppsScanForward:
case WMPPlayState.wmppsScanReverse:
btnStop.Enabled = canStop;
btnPlayPause.Enabled = canPause;
btnPlayPause.Text = "&Play";
btnRew.Enabled = false;
btnFF.Enabled = false;
if(canSeek)
{
tbSeek.Enabled = true;
}
if(fDuration > 0)
{
tmrPos.Start();
}
break;
default:
btnStop.Enabled = canStop;
btnPlayPause.Enabled = canPlay;
btnPlayPause.Text = "&Play";
btnFF.Enabled = canFF;
btnRew.Enabled = canRew;
tbSeek.Enabled = canSeek;
if(fDuration > 0)
{
tmrPos.Start();
}
else
{
tmrPos.Stop();
}
break;
}
}
#region UI Element Events
///
/// Open new audio from the Library.
///
private void btnOpen_Click(object sender, System.EventArgs e)
{
Library libForm = new Library();
libForm.WMPlayer = Player;
libForm.ShowDialog();
if (libForm.DialogResult == DialogResult.OK)
{
try
{
theMedia = libForm.TheMedia;
if(theMedia != null) // Test whether the user chose a media item.
{
lblSongName.Text = theMedia.name;
lblSourceURL.Text = theMedia.sourceURL;
// Set the current media. It will play automatically.
Player.currentMedia = theMedia;
}
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
}
}
}
///
/// Play/Pause transport control button handler.
///
private void btnPlayPause_Click(object sender, System.EventArgs e)
{
try
{
if(Player.playState == WMPPlayState.wmppsPlaying)
{
Player.Ctlcontrols.pause();
}
else
{
Player.Ctlcontrols.play();
}
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
}
}
///
/// Stop button transport control.
///
private void btnStop_Click(object sender, System.EventArgs e)
{
try
{
Player.Ctlcontrols.stop();
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
}
}
///
/// Rewind button transport control.
///
private void btnRew_Click(object sender, System.EventArgs e)
{
try
{
Player.Ctlcontrols.fastReverse();
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
}
}
///
/// Fast-forward button transport control.
///
private void btnFF_Click(object sender, System.EventArgs e)
{
try
{
Player.Ctlcontrols.fastForward();
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
}
}
///
/// The user moved the trackbar. Set the new position.
/// The trackbar has a fixed resolution of 100 ticks.
/// This code maps that resolution to the file duration.
///
private void tbSeek_Scroll(object sender, System.EventArgs e)
{
try
{
if(Player.currentMedia.duration != 0)
{
double newPerc = Convert.ToDouble(tbSeek.Value) / 100;
int duration = Convert.ToInt32(Player.currentMedia.duration * 1000); // milliseconds
double newPos = (duration * newPerc)/1000; // seconds
// Seek the Player
Player.Ctlcontrols.currentPosition = newPos;
}
else
{
tbSeek.Value = 0; //No duration available. Just ground the slider.
}
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
}
}
///
/// Update the UI based on current media position.
/// The trackbar has a fixed resolution of 100 ticks.
/// This code maps that resolution to the file duration.
///
private void tmrPos_Tick(object sender, System.EventArgs e)
{
try
{
// Update the trackbar.
int curPos = Convert.ToInt32(Player.Ctlcontrols.currentPosition * 1000); // milliseconds
int duration = Convert.ToInt32(Player.currentMedia.duration * 1000); // milliseconds
if(duration > 0)
{
tbSeek.Value = Convert.ToInt32((curPos * 100) / duration); // % complete
}
// Update the time label
lblTime.Text = Player.Ctlcontrols.currentPositionString;
}
catch(COMException comExc)
{
int hr = comExc.ErrorCode;
String Message = String.Format("There was an error.\nHRESULT = {1}\n{2}", hr.ToString(), comExc.Message);
MessageBox.Show(Message, "COM Exception");
}
}
#endregion
#region Windows Media Player Events
///
/// Handle the Player.OpenStateChange event.
///
private void Player_OpenStateChange(object sender, AxWMPLib._WMPOCXEvents_OpenStateChangeEvent e)
{
switch((WMPOpenState)e.newState)
{
case WMPOpenState.wmposBeginCodecAcquisition:
lblOpenState.Text = "Beginning codec acquisition...";
break;
case WMPOpenState.wmposBeginIndividualization:
lblOpenState.Text = "Beginning individualization...";
break;
case WMPOpenState.wmposBeginLicenseAcquisition:
lblOpenState.Text = "Beginning license acquisition...";
break;
case WMPOpenState.wmposMediaChanging:
lblOpenState.Text = "Media changing...";
break;
case WMPOpenState.wmposMediaConnecting:
lblOpenState.Text = "Media connecting...";
break;
case WMPOpenState.wmposMediaLoading:
lblOpenState.Text = "Media loading...";
break;
case WMPOpenState.wmposMediaLocating:
lblOpenState.Text = "Media locating...";
break;
case WMPOpenState.wmposMediaOpen:
lblOpenState.Text = "Media open";
break;
case WMPOpenState.wmposMediaWaiting:
lblOpenState.Text = "Media waiting...";
break;
case WMPOpenState.wmposOpeningUnknownURL:
lblOpenState.Text = "Opening unknown URL...";
break;
case WMPOpenState.wmposPlaylistChanged:
lblOpenState.Text = "Playlist changed...";
break;
case WMPOpenState.wmposPlaylistChanging:
lblOpenState.Text = "Playlist changing...";
break;
case WMPOpenState.wmposPlaylistConnecting:
lblOpenState.Text = "Playlist connecting...";
break;
case WMPOpenState.wmposPlaylistLoading:
lblOpenState.Text = "Playlist loading...";
break;
case WMPOpenState.wmposPlaylistLocating:
lblOpenState.Text = "Playlist locating...";
break;
case WMPOpenState.wmposPlaylistOpening:
lblOpenState.Text = "Playlist opening...";
break;
case WMPOpenState.wmposPlaylistOpenNoMedia:
lblOpenState.Text = "Playlist open, no media";
break;
default:
lblOpenState.Text = "";
break;
}
}
///
/// Handle the Player.PlayStateChange event.
///
private void Player_PlayStateChange(object sender, AxWMPLib._WMPOCXEvents_PlayStateChangeEvent e)
{
WMPPlayState newState = (WMPPlayState)e.newState;
switch(newState)
{
case WMPPlayState.wmppsBuffering:
lblPlayState.Text = "Buffering...";
break;
case WMPPlayState.wmppsMediaEnded:
lblPlayState.Text = "Media ended";
SetUIState(newState);
break;
case WMPPlayState.wmppsPaused:
lblPlayState.Text = "Paused";
SetUIState(newState);
break;
case WMPPlayState.wmppsPlaying:
lblPlayState.Text = "Playing";
SetUIState(newState);
break;
case WMPPlayState.wmppsReady:
lblPlayState.Text = "Ready";
SetUIState(newState);
break;
case WMPPlayState.wmppsReconnecting:
lblPlayState.Text = "Reconnecting...";
break;
case WMPPlayState.wmppsScanForward:
lblPlayState.Text = "Scanning forward...";
SetUIState(newState);
break;
case WMPPlayState.wmppsScanReverse:
lblPlayState.Text = "Scanning backwards...";
SetUIState(newState);
break;
case WMPPlayState.wmppsStopped:
lblPlayState.Text = "Stopped";
SetUIState(newState);
btnStop.Enabled = false;
break;
case WMPPlayState.wmppsTransitioning:
lblPlayState.Text = "Transitioning...";
break;
case WMPPlayState.wmppsWaiting:
lblPlayState.Text = "Waiting...";
break;
default:
lblPlayState.Text = "";
break;
}
}
///
/// Generic handler for Player error events.
///
///
/// Information returned in the event arguments is limited to the media object
/// that was the source of the error. Further information can be obtained from
/// IWMPMedia2.Error. Use IWMErrorItem.Description with caution, because messages
/// may be more relevant to the Windows Media Player than to your application.
///
private void Player_MediaError(object sender, _WMPOCXEvents_MediaErrorEvent e)
{
IWMPMedia2 errSource = e.pMediaObject as IWMPMedia2;
IWMPErrorItem errorItem = errSource.Error;
String errorDesc = errorItem.errorDescription;
String errorStr = "Error " + errorItem.errorCode.ToString("X") + " in " + errSource.sourceURL + "\n" + errorDesc;
MessageBox.Show(errorStr, "Player Error");
}
#endregion
}
}