SoundPlayer Klasa
Definicja
Ważne
Niektóre informacje odnoszą się do produktu w wersji wstępnej, który może zostać znacząco zmodyfikowany przed wydaniem. Firma Microsoft nie udziela żadnych gwarancji, jawnych lub domniemanych, w odniesieniu do informacji podanych w tym miejscu.
Steruje odtwarzaniem dźwięku z pliku .wav.
public ref class SoundPlayer : System::ComponentModel::Component, System::Runtime::Serialization::ISerializablepublic class SoundPlayer : System.ComponentModel.Component, System.Runtime.Serialization.ISerializable[System.Serializable]
public class SoundPlayer : System.ComponentModel.Component, System.Runtime.Serialization.ISerializabletype SoundPlayer = class
inherit Component
interface ISerializable[<System.Serializable>]
type SoundPlayer = class
inherit Component
interface ISerializablePublic Class SoundPlayer
Inherits Component
Implements ISerializable- Dziedziczenie
- Atrybuty
- Implementuje
Przykłady
Poniższy przykład kodu przedstawia użycie SoundPlayer klasy do odtwarzania plików .wav ze ścieżki lokalnej lub identyfikatora URI ( Uniform Resource Identifier).
#using <System.Drawing.dll>
#using <System.dll>
#using <System.Windows.Forms.dll>
using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::Diagnostics;
using namespace System::Drawing;
using namespace System::Media;
using namespace System::Windows::Forms;
public ref class SoundTestForm: public System::Windows::Forms::Form
{
private:
System::Windows::Forms::Label ^ label1;
System::Windows::Forms::TextBox^ filepathTextbox;
System::Windows::Forms::Button^ playOnceSyncButton;
System::Windows::Forms::Button^ playOnceAsyncButton;
System::Windows::Forms::Button^ playLoopAsyncButton;
System::Windows::Forms::Button^ selectFileButton;
System::Windows::Forms::Button^ stopButton;
System::Windows::Forms::StatusBar^ statusBar;
System::Windows::Forms::Button^ loadSyncButton;
System::Windows::Forms::Button^ loadAsyncButton;
SoundPlayer^ player;
public:
SoundTestForm()
{
// Initialize Forms Designer generated code.
InitializeComponent();
// Disable playback controls until a valid .wav file
// is selected.
EnablePlaybackControls( false );
// Set up the status bar and other controls.
InitializeControls();
// Set up the SoundPlayer object.
InitializeSound();
}
private:
// Sets up the status bar and other controls.
void InitializeControls()
{
// Set up the status bar.
StatusBarPanel^ panel = gcnew StatusBarPanel;
panel->BorderStyle = StatusBarPanelBorderStyle::Sunken;
panel->Text = "Ready.";
panel->AutoSize = StatusBarPanelAutoSize::Spring;
this->statusBar->ShowPanels = true;
this->statusBar->Panels->Add( panel );
}
// Sets up the SoundPlayer object.
void InitializeSound()
{
// Create an instance of the SoundPlayer class.
player = gcnew SoundPlayer;
// Listen for the LoadCompleted event.
player->LoadCompleted += gcnew AsyncCompletedEventHandler( this, &SoundTestForm::player_LoadCompleted );
// Listen for the SoundLocationChanged event.
player->SoundLocationChanged += gcnew EventHandler( this, &SoundTestForm::player_LocationChanged );
}
void selectFileButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Create a new OpenFileDialog.
OpenFileDialog^ dlg = gcnew OpenFileDialog;
// Make sure the dialog checks for existence of the
// selected file.
dlg->CheckFileExists = true;
// Allow selection of .wav files only.
dlg->Filter = "WAV files (*.wav)|*.wav";
dlg->DefaultExt = ".wav";
// Activate the file selection dialog.
if ( dlg->ShowDialog() == ::DialogResult::OK )
{
// Get the selected file's path from the dialog.
this->filepathTextbox->Text = dlg->FileName;
// Assign the selected file's path to
// the SoundPlayer object.
player->SoundLocation = filepathTextbox->Text;
}
}
// Convenience method for setting message text in
// the status bar.
void ReportStatus( String^ statusMessage )
{
// If the caller passed in a message...
if ( (statusMessage != nullptr) && (statusMessage != String::Empty) )
{
// ...post the caller's message to the status bar.
this->statusBar->Panels[ 0 ]->Text = statusMessage;
}
}
// Enables and disables play controls.
void EnablePlaybackControls( bool enabled )
{
this->playOnceSyncButton->Enabled = enabled;
this->playOnceAsyncButton->Enabled = enabled;
this->playLoopAsyncButton->Enabled = enabled;
this->stopButton->Enabled = enabled;
}
void filepathTextbox_TextChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
{
// Disable playback controls until the new .wav is loaded.
EnablePlaybackControls( false );
}
void loadSyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Disable playback controls until the .wav is
// successfully loaded. The LoadCompleted event
// handler will enable them.
EnablePlaybackControls( false );
try
{
// Assign the selected file's path to
// the SoundPlayer object.
player->SoundLocation = filepathTextbox->Text;
// Load the .wav file.
player->Load();
}
catch ( Exception^ ex )
{
ReportStatus( ex->Message );
}
}
void loadAsyncButton_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
// Disable playback controls until the .wav is
// successfully loaded. The LoadCompleted event
// handler will enable them.
EnablePlaybackControls( false );
try
{
// Assign the selected file's path to
// the SoundPlayer object.
player->SoundLocation = this->filepathTextbox->Text;
// Load the .wav file.
player->LoadAsync();
}
catch ( Exception^ ex )
{
ReportStatus( ex->Message );
}
}
// Synchronously plays the selected .wav file once.
// If the file is large, UI response will be visibly
// affected.
void playOnceSyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
ReportStatus( "Playing .wav file synchronously." );
player->PlaySync();
ReportStatus( "Finished playing .wav file synchronously." );
}
// Asynchronously plays the selected .wav file once.
void playOnceAsyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
ReportStatus( "Playing .wav file asynchronously." );
player->Play();
}
// Asynchronously plays the selected .wav file until the user
// clicks the Stop button.
void playLoopAsyncButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
ReportStatus( "Looping .wav file asynchronously." );
player->PlayLooping();
}
// Stops the currently playing .wav file, if any.
void stopButton_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
player->Stop();
ReportStatus( "Stopped by user." );
}
// Handler for the LoadCompleted event.
void player_LoadCompleted( Object^ /*sender*/, AsyncCompletedEventArgs^ /*e*/ )
{
String^ message = String::Format( "LoadCompleted: {0}", this->filepathTextbox->Text );
ReportStatus( message );
EnablePlaybackControls( true );
}
// Handler for the SoundLocationChanged event.
void player_LocationChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
{
String^ message = String::Format( "SoundLocationChanged: {0}", player->SoundLocation );
ReportStatus( message );
}
void InitializeComponent()
{
this->filepathTextbox = gcnew System::Windows::Forms::TextBox;
this->selectFileButton = gcnew System::Windows::Forms::Button;
this->label1 = gcnew System::Windows::Forms::Label;
this->loadSyncButton = gcnew System::Windows::Forms::Button;
this->playOnceSyncButton = gcnew System::Windows::Forms::Button;
this->playOnceAsyncButton = gcnew System::Windows::Forms::Button;
this->stopButton = gcnew System::Windows::Forms::Button;
this->playLoopAsyncButton = gcnew System::Windows::Forms::Button;
this->statusBar = gcnew System::Windows::Forms::StatusBar;
this->loadAsyncButton = gcnew System::Windows::Forms::Button;
this->SuspendLayout();
//
// filepathTextbox
//
this->filepathTextbox->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
this->filepathTextbox->Location = System::Drawing::Point( 7, 25 );
this->filepathTextbox->Name = "filepathTextbox";
this->filepathTextbox->Size = System::Drawing::Size( 263, 20 );
this->filepathTextbox->TabIndex = 1;
this->filepathTextbox->Text = "";
this->filepathTextbox->TextChanged += gcnew System::EventHandler( this, &SoundTestForm::filepathTextbox_TextChanged );
//
// selectFileButton
//
this->selectFileButton->Anchor = static_cast<AnchorStyles>(AnchorStyles::Top | AnchorStyles::Right);
this->selectFileButton->Location = System::Drawing::Point( 276, 25 );
this->selectFileButton->Name = "selectFileButton";
this->selectFileButton->Size = System::Drawing::Size( 23, 21 );
this->selectFileButton->TabIndex = 2;
this->selectFileButton->Text = "...";
this->selectFileButton->Click += gcnew System::EventHandler( this, &SoundTestForm::selectFileButton_Click );
//
// label1
//
this->label1->Location = System::Drawing::Point( 7, 7 );
this->label1->Name = "label1";
this->label1->Size = System::Drawing::Size( 145, 17 );
this->label1->TabIndex = 3;
this->label1->Text = ".wav path or URL:";
//
// loadSyncButton
//
this->loadSyncButton->Location = System::Drawing::Point( 7, 53 );
this->loadSyncButton->Name = "loadSyncButton";
this->loadSyncButton->Size = System::Drawing::Size( 142, 23 );
this->loadSyncButton->TabIndex = 4;
this->loadSyncButton->Text = "Load Synchronously";
this->loadSyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::loadSyncButton_Click );
//
// playOnceSyncButton
//
this->playOnceSyncButton->Location = System::Drawing::Point( 7, 86 );
this->playOnceSyncButton->Name = "playOnceSyncButton";
this->playOnceSyncButton->Size = System::Drawing::Size( 142, 23 );
this->playOnceSyncButton->TabIndex = 5;
this->playOnceSyncButton->Text = "Play Once Synchronously";
this->playOnceSyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::playOnceSyncButton_Click );
//
// playOnceAsyncButton
//
this->playOnceAsyncButton->Location = System::Drawing::Point( 149, 86 );
this->playOnceAsyncButton->Name = "playOnceAsyncButton";
this->playOnceAsyncButton->Size = System::Drawing::Size( 147, 23 );
this->playOnceAsyncButton->TabIndex = 6;
this->playOnceAsyncButton->Text = "Play Once Asynchronously";
this->playOnceAsyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::playOnceAsyncButton_Click );
//
// stopButton
//
this->stopButton->Location = System::Drawing::Point( 149, 109 );
this->stopButton->Name = "stopButton";
this->stopButton->Size = System::Drawing::Size( 147, 23 );
this->stopButton->TabIndex = 7;
this->stopButton->Text = "Stop";
this->stopButton->Click += gcnew System::EventHandler( this, &SoundTestForm::stopButton_Click );
//
// playLoopAsyncButton
//
this->playLoopAsyncButton->Location = System::Drawing::Point( 7, 109 );
this->playLoopAsyncButton->Name = "playLoopAsyncButton";
this->playLoopAsyncButton->Size = System::Drawing::Size( 142, 23 );
this->playLoopAsyncButton->TabIndex = 8;
this->playLoopAsyncButton->Text = "Loop Asynchronously";
this->playLoopAsyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::playLoopAsyncButton_Click );
//
// statusBar
//
this->statusBar->Location = System::Drawing::Point( 0, 146 );
this->statusBar->Name = "statusBar";
this->statusBar->Size = System::Drawing::Size( 306, 22 );
this->statusBar->SizingGrip = false;
this->statusBar->TabIndex = 9;
this->statusBar->Text = "(no status)";
//
// loadAsyncButton
//
this->loadAsyncButton->Location = System::Drawing::Point( 149, 53 );
this->loadAsyncButton->Name = "loadAsyncButton";
this->loadAsyncButton->Size = System::Drawing::Size( 147, 23 );
this->loadAsyncButton->TabIndex = 10;
this->loadAsyncButton->Text = "Load Asynchronously";
this->loadAsyncButton->Click += gcnew System::EventHandler( this, &SoundTestForm::loadAsyncButton_Click );
//
// SoundTestForm
//
this->ClientSize = System::Drawing::Size( 306, 168 );
this->Controls->Add( this->loadAsyncButton );
this->Controls->Add( this->statusBar );
this->Controls->Add( this->playLoopAsyncButton );
this->Controls->Add( this->stopButton );
this->Controls->Add( this->playOnceAsyncButton );
this->Controls->Add( this->playOnceSyncButton );
this->Controls->Add( this->loadSyncButton );
this->Controls->Add( this->label1 );
this->Controls->Add( this->selectFileButton );
this->Controls->Add( this->filepathTextbox );
this->MinimumSize = System::Drawing::Size( 310, 165 );
this->Name = "SoundTestForm";
this->SizeGripStyle = System::Windows::Forms::SizeGripStyle::Show;
this->Text = "Sound API Test Form";
this->ResumeLayout( false );
}
};
[STAThread]
int main()
{
Application::Run( gcnew SoundTestForm );
}
using System;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Media;
using System.Windows.Forms;
namespace SoundApiExample
{
public class SoundTestForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox filepathTextbox;
private System.Windows.Forms.Button playOnceSyncButton;
private System.Windows.Forms.Button playOnceAsyncButton;
private System.Windows.Forms.Button playLoopAsyncButton;
private System.Windows.Forms.Button selectFileButton;
private System.Windows.Forms.Button stopButton;
private System.Windows.Forms.StatusBar statusBar;
private System.Windows.Forms.Button loadSyncButton;
private System.Windows.Forms.Button loadAsyncButton;
private SoundPlayer player;
public SoundTestForm()
{
// Initialize Forms Designer generated code.
InitializeComponent();
// Disable playback controls until a valid .wav file
// is selected.
EnablePlaybackControls(false);
// Set up the status bar and other controls.
InitializeControls();
// Set up the SoundPlayer object.
InitializeSound();
}
// Sets up the status bar and other controls.
private void InitializeControls()
{
// Set up the status bar.
StatusBarPanel panel = new StatusBarPanel();
panel.BorderStyle = StatusBarPanelBorderStyle.Sunken;
panel.Text = "Ready.";
panel.AutoSize = StatusBarPanelAutoSize.Spring;
this.statusBar.ShowPanels = true;
this.statusBar.Panels.Add(panel);
}
// Sets up the SoundPlayer object.
private void InitializeSound()
{
// Create an instance of the SoundPlayer class.
player = new SoundPlayer();
// Listen for the LoadCompleted event.
player.LoadCompleted += new AsyncCompletedEventHandler(player_LoadCompleted);
// Listen for the SoundLocationChanged event.
player.SoundLocationChanged += new EventHandler(player_LocationChanged);
}
private void selectFileButton_Click(object sender,
System.EventArgs e)
{
// Create a new OpenFileDialog.
OpenFileDialog dlg = new OpenFileDialog();
// Make sure the dialog checks for existence of the
// selected file.
dlg.CheckFileExists = true;
// Allow selection of .wav files only.
dlg.Filter = "WAV files (*.wav)|*.wav";
dlg.DefaultExt = ".wav";
// Activate the file selection dialog.
if (dlg.ShowDialog() == DialogResult.OK)
{
// Get the selected file's path from the dialog.
this.filepathTextbox.Text = dlg.FileName;
// Assign the selected file's path to
// the SoundPlayer object.
player.SoundLocation = filepathTextbox.Text;
}
}
// Convenience method for setting message text in
// the status bar.
private void ReportStatus(string statusMessage)
{
// If the caller passed in a message...
if (!string.IsNullOrEmpty(statusMessage))
{
// ...post the caller's message to the status bar.
this.statusBar.Panels[0].Text = statusMessage;
}
}
// Enables and disables play controls.
private void EnablePlaybackControls(bool enabled)
{
this.playOnceSyncButton.Enabled = enabled;
this.playOnceAsyncButton.Enabled = enabled;
this.playLoopAsyncButton.Enabled = enabled;
this.stopButton.Enabled = enabled;
}
private void filepathTextbox_TextChanged(object sender,
EventArgs e)
{
// Disable playback controls until the new .wav is loaded.
EnablePlaybackControls(false);
}
private void loadSyncButton_Click(object sender,
System.EventArgs e)
{
// Disable playback controls until the .wav is
// successfully loaded. The LoadCompleted event
// handler will enable them.
EnablePlaybackControls(false);
try
{
// Assign the selected file's path to
// the SoundPlayer object.
player.SoundLocation = filepathTextbox.Text;
// Load the .wav file.
player.Load();
}
catch (Exception ex)
{
ReportStatus(ex.Message);
}
}
private void loadAsyncButton_Click(System.Object sender,
System.EventArgs e)
{
// Disable playback controls until the .wav is
// successfully loaded. The LoadCompleted event
// handler will enable them.
EnablePlaybackControls(false);
try
{
// Assign the selected file's path to
// the SoundPlayer object.
player.SoundLocation = this.filepathTextbox.Text;
// Load the .wav file.
player.LoadAsync();
}
catch (Exception ex)
{
ReportStatus(ex.Message);
}
}
// Synchronously plays the selected .wav file once.
// If the file is large, UI response will be visibly
// affected.
private void playOnceSyncButton_Click(object sender,
System.EventArgs e)
{
ReportStatus("Playing .wav file synchronously.");
player.PlaySync();
ReportStatus("Finished playing .wav file synchronously.");
}
// Asynchronously plays the selected .wav file once.
private void playOnceAsyncButton_Click(object sender,
System.EventArgs e)
{
ReportStatus("Playing .wav file asynchronously.");
player.Play();
}
// Asynchronously plays the selected .wav file until the user
// clicks the Stop button.
private void playLoopAsyncButton_Click(object sender,
System.EventArgs e)
{
ReportStatus("Looping .wav file asynchronously.");
player.PlayLooping();
}
// Stops the currently playing .wav file, if any.
private void stopButton_Click(System.Object sender,
System.EventArgs e)
{
player.Stop();
ReportStatus("Stopped by user.");
}
// Handler for the LoadCompleted event.
private void player_LoadCompleted(object sender,
AsyncCompletedEventArgs e)
{
string message = String.Format("LoadCompleted: {0}",
this.filepathTextbox.Text);
ReportStatus(message);
EnablePlaybackControls(true);
}
// Handler for the SoundLocationChanged event.
private void player_LocationChanged(object sender, EventArgs e)
{
string message = String.Format("SoundLocationChanged: {0}",
player.SoundLocation);
ReportStatus(message);
}
private void playSoundFromResource(object sender, EventArgs e)
{
System.Reflection.Assembly a = System.Reflection.Assembly.GetExecutingAssembly();
System.IO.Stream s = a.GetManifestResourceStream("<AssemblyName>.chimes.wav");
SoundPlayer player = new SoundPlayer(s);
player.Play();
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
this.filepathTextbox = new System.Windows.Forms.TextBox();
this.selectFileButton = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.loadSyncButton = new System.Windows.Forms.Button();
this.playOnceSyncButton = new System.Windows.Forms.Button();
this.playOnceAsyncButton = new System.Windows.Forms.Button();
this.stopButton = new System.Windows.Forms.Button();
this.playLoopAsyncButton = new System.Windows.Forms.Button();
this.statusBar = new System.Windows.Forms.StatusBar();
this.loadAsyncButton = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// filepathTextbox
//
this.filepathTextbox.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right)));
this.filepathTextbox.Location = new System.Drawing.Point(7, 25);
this.filepathTextbox.Name = "filepathTextbox";
this.filepathTextbox.Size = new System.Drawing.Size(263, 20);
this.filepathTextbox.TabIndex = 1;
this.filepathTextbox.Text = "";
this.filepathTextbox.TextChanged += new System.EventHandler(this.filepathTextbox_TextChanged);
//
// selectFileButton
//
this.selectFileButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
this.selectFileButton.Location = new System.Drawing.Point(276, 25);
this.selectFileButton.Name = "selectFileButton";
this.selectFileButton.Size = new System.Drawing.Size(23, 21);
this.selectFileButton.TabIndex = 2;
this.selectFileButton.Text = "...";
this.selectFileButton.Click += new System.EventHandler(this.selectFileButton_Click);
//
// label1
//
this.label1.Location = new System.Drawing.Point(7, 7);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(145, 17);
this.label1.TabIndex = 3;
this.label1.Text = ".wav path or URL:";
//
// loadSyncButton
//
this.loadSyncButton.Location = new System.Drawing.Point(7, 53);
this.loadSyncButton.Name = "loadSyncButton";
this.loadSyncButton.Size = new System.Drawing.Size(142, 23);
this.loadSyncButton.TabIndex = 4;
this.loadSyncButton.Text = "Load Synchronously";
this.loadSyncButton.Click += new System.EventHandler(this.loadSyncButton_Click);
//
// playOnceSyncButton
//
this.playOnceSyncButton.Location = new System.Drawing.Point(7, 86);
this.playOnceSyncButton.Name = "playOnceSyncButton";
this.playOnceSyncButton.Size = new System.Drawing.Size(142, 23);
this.playOnceSyncButton.TabIndex = 5;
this.playOnceSyncButton.Text = "Play Once Synchronously";
this.playOnceSyncButton.Click += new System.EventHandler(this.playOnceSyncButton_Click);
//
// playOnceAsyncButton
//
this.playOnceAsyncButton.Location = new System.Drawing.Point(149, 86);
this.playOnceAsyncButton.Name = "playOnceAsyncButton";
this.playOnceAsyncButton.Size = new System.Drawing.Size(147, 23);
this.playOnceAsyncButton.TabIndex = 6;
this.playOnceAsyncButton.Text = "Play Once Asynchronously";
this.playOnceAsyncButton.Click += new System.EventHandler(this.playOnceAsyncButton_Click);
//
// stopButton
//
this.stopButton.Location = new System.Drawing.Point(149, 109);
this.stopButton.Name = "stopButton";
this.stopButton.Size = new System.Drawing.Size(147, 23);
this.stopButton.TabIndex = 7;
this.stopButton.Text = "Stop";
this.stopButton.Click += new System.EventHandler(this.stopButton_Click);
//
// playLoopAsyncButton
//
this.playLoopAsyncButton.Location = new System.Drawing.Point(7, 109);
this.playLoopAsyncButton.Name = "playLoopAsyncButton";
this.playLoopAsyncButton.Size = new System.Drawing.Size(142, 23);
this.playLoopAsyncButton.TabIndex = 8;
this.playLoopAsyncButton.Text = "Loop Asynchronously";
this.playLoopAsyncButton.Click += new System.EventHandler(this.playLoopAsyncButton_Click);
//
// statusBar
//
this.statusBar.Location = new System.Drawing.Point(0, 146);
this.statusBar.Name = "statusBar";
this.statusBar.Size = new System.Drawing.Size(306, 22);
this.statusBar.SizingGrip = false;
this.statusBar.TabIndex = 9;
this.statusBar.Text = "(no status)";
//
// loadAsyncButton
//
this.loadAsyncButton.Location = new System.Drawing.Point(149, 53);
this.loadAsyncButton.Name = "loadAsyncButton";
this.loadAsyncButton.Size = new System.Drawing.Size(147, 23);
this.loadAsyncButton.TabIndex = 10;
this.loadAsyncButton.Text = "Load Asynchronously";
this.loadAsyncButton.Click += new System.EventHandler(this.loadAsyncButton_Click);
//
// SoundTestForm
//
this.ClientSize = new System.Drawing.Size(306, 168);
this.Controls.Add(this.loadAsyncButton);
this.Controls.Add(this.statusBar);
this.Controls.Add(this.playLoopAsyncButton);
this.Controls.Add(this.stopButton);
this.Controls.Add(this.playOnceAsyncButton);
this.Controls.Add(this.playOnceSyncButton);
this.Controls.Add(this.loadSyncButton);
this.Controls.Add(this.label1);
this.Controls.Add(this.selectFileButton);
this.Controls.Add(this.filepathTextbox);
this.MinimumSize = new System.Drawing.Size(310, 165);
this.Name = "SoundTestForm";
this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Show;
this.Text = "Sound API Test Form";
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new SoundTestForm());
}
}
}
Imports System.Collections
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Drawing
Imports System.Media
Imports System.Windows.Forms
Public Class SoundTestForm
Inherits System.Windows.Forms.Form
Private label1 As System.Windows.Forms.Label
Private WithEvents filepathTextbox As System.Windows.Forms.TextBox
Private WithEvents playOnceSyncButton As System.Windows.Forms.Button
Private WithEvents playOnceAsyncButton As System.Windows.Forms.Button
Private WithEvents playLoopAsyncButton As System.Windows.Forms.Button
Private WithEvents selectFileButton As System.Windows.Forms.Button
Private WithEvents stopButton As System.Windows.Forms.Button
Private statusBar As System.Windows.Forms.StatusBar
Private WithEvents loadSyncButton As System.Windows.Forms.Button
Private WithEvents loadAsyncButton As System.Windows.Forms.Button
Private player As SoundPlayer
Public Sub New()
' Initialize Forms Designer generated code.
InitializeComponent()
' Disable playback controls until a valid .wav file
' is selected.
EnablePlaybackControls(False)
' Set up the status bar and other controls.
InitializeControls()
' Set up the SoundPlayer object.
InitializeSound()
End Sub
' Sets up the status bar and other controls.
Private Sub InitializeControls()
' Set up the status bar.
Dim panel As New StatusBarPanel
panel.BorderStyle = StatusBarPanelBorderStyle.Sunken
panel.Text = "Ready."
panel.AutoSize = StatusBarPanelAutoSize.Spring
Me.statusBar.ShowPanels = True
Me.statusBar.Panels.Add(panel)
End Sub
' Sets up the SoundPlayer object.
Private Sub InitializeSound()
' Create an instance of the SoundPlayer class.
player = New SoundPlayer
' Listen for the LoadCompleted event.
AddHandler player.LoadCompleted, AddressOf player_LoadCompleted
' Listen for the SoundLocationChanged event.
AddHandler player.SoundLocationChanged, AddressOf player_LocationChanged
End Sub
Private Sub selectFileButton_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles selectFileButton.Click
' Create a new OpenFileDialog.
Dim dlg As New OpenFileDialog
' Make sure the dialog checks for existence of the
' selected file.
dlg.CheckFileExists = True
' Allow selection of .wav files only.
dlg.Filter = "WAV files (*.wav)|*.wav"
dlg.DefaultExt = ".wav"
' Activate the file selection dialog.
If dlg.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
' Get the selected file's path from the dialog.
Me.filepathTextbox.Text = dlg.FileName
' Assign the selected file's path to the SoundPlayer object.
player.SoundLocation = filepathTextbox.Text
End If
End Sub
' Convenience method for setting message text in
' the status bar.
Private Sub ReportStatus(ByVal statusMessage As String)
' If the caller passed in a message...
If (statusMessage IsNot Nothing) AndAlso _
statusMessage <> [String].Empty Then
' ...post the caller's message to the status bar.
Me.statusBar.Panels(0).Text = statusMessage
End If
End Sub
' Enables and disables play controls.
Private Sub EnablePlaybackControls(ByVal enabled As Boolean)
Me.playOnceSyncButton.Enabled = enabled
Me.playOnceAsyncButton.Enabled = enabled
Me.playLoopAsyncButton.Enabled = enabled
Me.stopButton.Enabled = enabled
End Sub
Private Sub filepathTextbox_TextChanged(ByVal sender As Object, _
ByVal e As EventArgs) Handles filepathTextbox.TextChanged
' Disable playback controls until the new .wav is loaded.
EnablePlaybackControls(False)
End Sub
Private Sub loadSyncButton_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles loadSyncButton.Click
' Disable playback controls until the .wav is successfully
' loaded. The LoadCompleted event handler will enable them.
EnablePlaybackControls(False)
Try
' Assign the selected file's path to the SoundPlayer object.
player.SoundLocation = filepathTextbox.Text
' Load the .wav file.
player.Load()
Catch ex As Exception
ReportStatus(ex.Message)
End Try
End Sub
Private Sub loadAsyncButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles loadAsyncButton.Click
' Disable playback controls until the .wav is successfully
' loaded. The LoadCompleted event handler will enable them.
EnablePlaybackControls(False)
Try
' Assign the selected file's path to the SoundPlayer object.
player.SoundLocation = Me.filepathTextbox.Text
' Load the .wav file.
player.LoadAsync()
Catch ex As Exception
ReportStatus(ex.Message)
End Try
End Sub
' Synchronously plays the selected .wav file once.
' If the file is large, UI response will be visibly
' affected.
Private Sub playOnceSyncButton_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles playOnceSyncButton.Click
ReportStatus("Playing .wav file synchronously.")
player.PlaySync()
ReportStatus("Finished playing .wav file synchronously.")
End Sub
' Asynchronously plays the selected .wav file once.
Private Sub playOnceAsyncButton_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles playOnceAsyncButton.Click
ReportStatus("Playing .wav file asynchronously.")
player.Play()
End Sub
' Asynchronously plays the selected .wav file until the user
' clicks the Stop button.
Private Sub playLoopAsyncButton_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles playLoopAsyncButton.Click
ReportStatus("Looping .wav file asynchronously.")
player.PlayLooping()
End Sub
' Stops the currently playing .wav file, if any.
Private Sub stopButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles stopButton.Click
player.Stop()
ReportStatus("Stopped by user.")
End Sub
' Handler for the LoadCompleted event.
Private Sub player_LoadCompleted(ByVal sender As Object, _
ByVal e As AsyncCompletedEventArgs)
Dim message As String = [String].Format("LoadCompleted: {0}", _
Me.filepathTextbox.Text)
ReportStatus(message)
EnablePlaybackControls(True)
End Sub
' Handler for the SoundLocationChanged event.
Private Sub player_LocationChanged(ByVal sender As Object, _
ByVal e As EventArgs)
Dim message As String = [String].Format("SoundLocationChanged: {0}", _
player.SoundLocation)
ReportStatus(message)
End Sub
Private Sub playSoundFromResource(ByVal sender As Object, _
ByVal e As EventArgs)
Dim a As System.Reflection.Assembly = System.Reflection.Assembly.GetExecutingAssembly()
Dim s As System.IO.Stream = a.GetManifestResourceStream("<AssemblyName>.chimes.wav")
Dim player As SoundPlayer = New SoundPlayer(s)
player.Play()
End Sub
Private Sub InitializeComponent()
Me.filepathTextbox = New System.Windows.Forms.TextBox
Me.selectFileButton = New System.Windows.Forms.Button
Me.label1 = New System.Windows.Forms.Label
Me.loadSyncButton = New System.Windows.Forms.Button
Me.playOnceSyncButton = New System.Windows.Forms.Button
Me.playOnceAsyncButton = New System.Windows.Forms.Button
Me.stopButton = New System.Windows.Forms.Button
Me.playLoopAsyncButton = New System.Windows.Forms.Button
Me.statusBar = New System.Windows.Forms.StatusBar
Me.loadAsyncButton = New System.Windows.Forms.Button
Me.SuspendLayout()
'
' filepathTextbox
'
Me.filepathTextbox.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
Me.filepathTextbox.Location = New System.Drawing.Point(7, 25)
Me.filepathTextbox.Name = "filepathTextbox"
Me.filepathTextbox.Size = New System.Drawing.Size(263, 20)
Me.filepathTextbox.TabIndex = 1
Me.filepathTextbox.Text = ""
'
' selectFileButton
'
Me.selectFileButton.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
Me.selectFileButton.Location = New System.Drawing.Point(276, 25)
Me.selectFileButton.Name = "selectFileButton"
Me.selectFileButton.Size = New System.Drawing.Size(23, 21)
Me.selectFileButton.TabIndex = 2
Me.selectFileButton.Text = "..."
'
' label1
'
Me.label1.Location = New System.Drawing.Point(7, 7)
Me.label1.Name = "label1"
Me.label1.Size = New System.Drawing.Size(145, 17)
Me.label1.TabIndex = 3
Me.label1.Text = ".wav path or URL:"
'
' loadSyncButton
'
Me.loadSyncButton.Location = New System.Drawing.Point(7, 53)
Me.loadSyncButton.Name = "loadSyncButton"
Me.loadSyncButton.Size = New System.Drawing.Size(142, 23)
Me.loadSyncButton.TabIndex = 4
Me.loadSyncButton.Text = "Load Synchronously"
'
' playOnceSyncButton
'
Me.playOnceSyncButton.Location = New System.Drawing.Point(7, 86)
Me.playOnceSyncButton.Name = "playOnceSyncButton"
Me.playOnceSyncButton.Size = New System.Drawing.Size(142, 23)
Me.playOnceSyncButton.TabIndex = 5
Me.playOnceSyncButton.Text = "Play Once Synchronously"
'
' playOnceAsyncButton
'
Me.playOnceAsyncButton.Location = New System.Drawing.Point(149, 86)
Me.playOnceAsyncButton.Name = "playOnceAsyncButton"
Me.playOnceAsyncButton.Size = New System.Drawing.Size(147, 23)
Me.playOnceAsyncButton.TabIndex = 6
Me.playOnceAsyncButton.Text = "Play Once Asynchronously"
'
' stopButton
'
Me.stopButton.Location = New System.Drawing.Point(149, 109)
Me.stopButton.Name = "stopButton"
Me.stopButton.Size = New System.Drawing.Size(147, 23)
Me.stopButton.TabIndex = 7
Me.stopButton.Text = "Stop"
'
' playLoopAsyncButton
'
Me.playLoopAsyncButton.Location = New System.Drawing.Point(7, 109)
Me.playLoopAsyncButton.Name = "playLoopAsyncButton"
Me.playLoopAsyncButton.Size = New System.Drawing.Size(142, 23)
Me.playLoopAsyncButton.TabIndex = 8
Me.playLoopAsyncButton.Text = "Loop Asynchronously"
'
' statusBar
'
Me.statusBar.Location = New System.Drawing.Point(0, 146)
Me.statusBar.Name = "statusBar"
Me.statusBar.Size = New System.Drawing.Size(306, 22)
Me.statusBar.SizingGrip = False
Me.statusBar.TabIndex = 9
Me.statusBar.Text = "(no status)"
'
' loadAsyncButton
'
Me.loadAsyncButton.Location = New System.Drawing.Point(149, 53)
Me.loadAsyncButton.Name = "loadAsyncButton"
Me.loadAsyncButton.Size = New System.Drawing.Size(147, 23)
Me.loadAsyncButton.TabIndex = 10
Me.loadAsyncButton.Text = "Load Asynchronously"
'
' SoundTestForm
'
Me.ClientSize = New System.Drawing.Size(306, 168)
Me.Controls.Add(loadAsyncButton)
Me.Controls.Add(statusBar)
Me.Controls.Add(playLoopAsyncButton)
Me.Controls.Add(stopButton)
Me.Controls.Add(playOnceAsyncButton)
Me.Controls.Add(playOnceSyncButton)
Me.Controls.Add(loadSyncButton)
Me.Controls.Add(label1)
Me.Controls.Add(selectFileButton)
Me.Controls.Add(filepathTextbox)
Me.MinimumSize = New System.Drawing.Size(310, 165)
Me.Name = "SoundTestForm"
Me.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Show
Me.Text = "Sound API Test Form"
Me.ResumeLayout(False)
End Sub
<STAThread()> _
Shared Sub Main()
Application.Run(New SoundTestForm)
End Sub
End Class
Uwagi
Klasa SoundPlayer udostępnia prosty interfejs do ładowania i odtwarzania pliku .wav. Klasa SoundPlayer obsługuje ładowanie pliku .wav ze ścieżki pliku, adresu URL, Stream pliku zawierającego plik .wav lub osadzony zasób zawierający plik .wav.
Aby odtworzyć dźwięk przy użyciu SoundPlayer klasy , skonfiguruj element SoundPlayer ze ścieżką do pliku .wav i wywołaj jedną z metod odtwarzania. Plik .wav do odtworzenia można zidentyfikować przy użyciu jednego z konstruktorów lub przez ustawienie SoundLocation właściwości lub Stream . Plik można załadować przed rozpoczęciem odtwarzania przy użyciu jednej z metod ładowania lub ładowanie można odroczyć do momentu wywołania jednej z metod odtwarzania. Skonfigurowany SoundPlayer do ładowania pliku .wav z adresu Stream URL lub musi załadować plik .wav do pamięci przed rozpoczęciem odtwarzania.
Plik .wav można ładować lub odtwarzać synchronicznie lub asynchronicznie. Jeśli wywołasz metodę ładowania synchronicznego lub metody odtwarzania, wątek wywołujący będzie czekać, aż metoda powróci, co może spowodować przerwanie malowania i innych zdarzeń. Wywołanie asynchronicznego ładowania lub metody odtwarzania umożliwi kontynuowanie wątku wywołującego bez przerwy. Aby uzyskać więcej informacji na temat wywołań metod asynchronicznych, zobacz Instrukcje: uruchamianie operacji w tle.
SoundPlayer Po zakończeniu ładowania pliku .wav zgłasza LoadCompleted zdarzenie. Można sprawdzić w procedurze AsyncCompletedEventArgs obsługi zdarzeń, aby określić, czy obciążenie zakończyło się powodzeniem, czy niepowodzeniem. Zdarzenie SoundLocationChanged jest zgłaszane, gdy źródło audio jest ustawione na nową ścieżkę pliku lub adres URL. Zdarzenie StreamChanged jest zgłaszane, gdy źródło audio jest ustawione na nowy Stream. Aby uzyskać więcej informacji na temat obsługi zdarzeń, zobacz Obsługa i podnoszenie zdarzeń.
Aby uzyskać więcej informacji na temat SoundPlayerprogramu , zobacz SoundPlayer Class Overview (Omówienie klasy SoundPlayer).
Uwaga
Klasa SoundPlayer nie może odtworzyć innych typów plików, takich jak .wma lub .mp3. Jeśli chcesz odtworzyć inne typy plików, możesz użyć kontrolki Odtwarzacz multimedialny Windows. Aby uzyskać więcej informacji, zobacz Using the Odtwarzacz multimedialny Windows Control in a .NET Framework Solution (Używanie kontrolki Odtwarzacz multimedialny Windows w rozwiązaniu .NET Framework) i Odtwarzacz multimedialny Windows Object Model Reference for Visual Basic .NET and C# (Dokumentacja modelu obiektów dla platformy .NET i języka C# w języku Visual Basic) zestaw SDK Odtwarzacz multimedialny Windows.
Konstruktory
| SoundPlayer() |
Inicjuje nowe wystąpienie klasy SoundPlayer. |
| SoundPlayer(SerializationInfo, StreamingContext) |
Przestarzałe.
Inicjuje nowe wystąpienie klasy SoundPlayer. |
| SoundPlayer(Stream) |
Inicjuje SoundPlayer nowe wystąpienie klasy i dołącza plik .wav w określonym Streampliku . |
| SoundPlayer(String) |
Inicjuje SoundPlayer nowe wystąpienie klasy i dołącza określony plik .wav. |
Właściwości
| CanRaiseEvents |
Pobiera wartość wskazującą, czy składnik może zgłosić zdarzenie. (Odziedziczone po Component) |
| Container |
Pobiera element IContainer zawierający element Component. (Odziedziczone po Component) |
| DesignMode |
Pobiera wartość wskazującą, czy Component element jest obecnie w trybie projektowania. (Odziedziczone po Component) |
| Events |
Pobiera listę programów obsługi zdarzeń dołączonych do tego Componentelementu . (Odziedziczone po Component) |
| IsLoadCompleted |
Pobiera wartość wskazującą, czy ładowanie pliku .wav zostało ukończone pomyślnie. |
| LoadTimeout |
Pobiera lub ustawia czas, w milisekundach, w którym plik .wav musi zostać załadowany. |
| Site |
Pobiera lub ustawia wartość ISite .Component (Odziedziczone po Component) |
| SoundLocation |
Pobiera lub ustawia ścieżkę pliku lub adres URL pliku .wav do załadowania. |
| Stream |
Pobiera lub ustawia element Stream , z którego ma być ładowany plik .wav. |
| Tag |
Pobiera lub ustawia Object obiekt zawierający dane dotyczące .SoundPlayer |
Metody
| CreateObjRef(Type) |
Tworzy obiekt zawierający wszystkie istotne informacje wymagane do wygenerowania serwera proxy używanego do komunikowania się z obiektem zdalnym. (Odziedziczone po MarshalByRefObject) |
| Dispose() |
Zwalnia wszelkie zasoby używane przez element Component. (Odziedziczone po Component) |
| Dispose(Boolean) |
Zwalnia zasoby niezarządzane używane przez element Component i opcjonalnie zwalnia zasoby zarządzane. (Odziedziczone po Component) |
| Equals(Object) |
Określa, czy dany obiekt jest taki sam, jak bieżący obiekt. (Odziedziczone po Object) |
| GetHashCode() |
Służy jako domyślna funkcja skrótu. (Odziedziczone po Object) |
| GetLifetimeService() |
Przestarzałe.
Pobiera bieżący obiekt usługi okresu istnienia, który kontroluje zasady okresu istnienia dla tego wystąpienia. (Odziedziczone po MarshalByRefObject) |
| GetService(Type) |
Zwraca obiekt, który reprezentuje usługę dostarczaną przez Component obiekt lub przez element Container. (Odziedziczone po Component) |
| GetType() |
Type Pobiera wartość bieżącego wystąpienia. (Odziedziczone po Object) |
| InitializeLifetimeService() |
Przestarzałe.
Uzyskuje obiekt usługi okresu istnienia w celu kontrolowania zasad okresu istnienia dla tego wystąpienia. (Odziedziczone po MarshalByRefObject) |
| Load() |
Ładuje dźwięk synchronicznie. |
| LoadAsync() |
Ładuje plik .wav ze strumienia lub zasobu internetowego przy użyciu nowego wątku. |
| MemberwiseClone() |
Tworzy płytkią kopię bieżącego Objectelementu . (Odziedziczone po Object) |
| MemberwiseClone(Boolean) |
Tworzy płytkią kopię bieżącego MarshalByRefObject obiektu. (Odziedziczone po MarshalByRefObject) |
| OnLoadCompleted(AsyncCompletedEventArgs) |
LoadCompleted Zgłasza zdarzenie. |
| OnSoundLocationChanged(EventArgs) |
SoundLocationChanged Zgłasza zdarzenie. |
| OnStreamChanged(EventArgs) |
StreamChanged Zgłasza zdarzenie. |
| Play() |
Odtwarza plik .wav przy użyciu nowego wątku i najpierw ładuje plik .wav, jeśli nie został załadowany. |
| PlayLooping() |
Odtwarza i zapętla plik .wav przy użyciu nowego wątku i ładuje najpierw plik .wav, jeśli nie został załadowany. |
| PlaySync() |
Odtwarza plik .wav i najpierw ładuje plik .wav, jeśli nie został załadowany. |
| Stop() |
Zatrzymuje odtwarzanie dźwięku w przypadku odtwarzania. |
| ToString() |
Zwraca wartość String zawierającą nazwę Componentobiektu , jeśli istnieje. Ta metoda nie powinna być zastępowana. (Odziedziczone po Component) |
Zdarzenia
| Disposed |
Występuje, gdy składnik jest usuwany przez wywołanie Dispose() metody . (Odziedziczone po Component) |
| LoadCompleted |
Występuje, gdy plik .wav został pomyślnie załadowany lub nie powiodło się. |
| SoundLocationChanged |
Występuje, gdy została ustawiona nowa ścieżka SoundPlayer źródła dźwięku. |
| StreamChanged |
Występuje, gdy zostało ustawione nowe Stream źródło SoundPlayer audio. |
Jawne implementacje interfejsu
| ISerializable.GetObjectData(SerializationInfo, StreamingContext) |
Aby uzyskać opis tego elementu członkowskiego, zobacz metodę GetObjectData(SerializationInfo, StreamingContext) . |
Dotyczy
Zobacz też
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