Windows Media Player 11 SDK AxWindowsMediaPlayer.PlayStateChange Event (VB and C#) 

Previous

Next

AxWindowsMediaPlayer.PlayStateChange Event (VB and C#)

The PlayStateChange event occurs when the play state of the Windows Media Player control changes.

[Visual Basic]
Private Sub player_PlayStateChange(
  sender As Object,
  e As _WMPOCXEvents_PlayStateChangeEvent
) Handles player.PlayStateChange

[C#]
private void player_PlayStateChange(
  object sender,
  _WMPOCXEvents_PlayStateChangeEvent e
)

Event Data

The handler associated with this event is of type AxWMPLib._WMPOCXEvents_PlayStateChangeEventHandler. This handler receives an argument of type AxWMPLib._WMPOCXEvents_PlayStateChangeEvent, which contains the following property related to this event.

Property	Description
newState	System.Int32 Specifies the new state.

Remarks

Windows Media Player states are not guaranteed to occur in any particular order. Furthermore, not every state necessarily occurs during a sequence of events. You should not write code that relies upon state order.

Example Code

The following example demonstrates an event handler for the PlayStateChange Event that displays the current play state in a label. The AxWMPLib.AxWindowsMediaPlayer object is represented by the variable named player.

[Visual Basic]

Public Sub player_PlayStateChange(ByVal sender As Object, ByVal e As AxWMPLib._WMPOCXEvents_PlayStateChangeEvent) Handles player.PlayStateChange

    ' Test the current state of the player, display a message for each state.
    Select Case e.newState

        Case 0 ' Undefined
            currentStateLabel.Text = "Undefined"

        Case 1 ' Stopped
            currentStateLabel.Text = "Stopped"

        Case 2 ' Paused
            currentStateLabel.Text = "Paused"

        Case 3 ' Playing
            currentStateLabel.Text = "Playing"

        Case 4 ' ScanForward
            currentStateLabel.Text = "ScanForward"

        Case 5 ' ScanReverse
            currentStateLabel.Text = "ScanReverse"

        Case 6 ' Buffering
            currentStateLabel.Text = "Buffering"

        Case 7 ' Waiting
            currentStateLabel.Text = "Waiting"

        Case 8 ' MediaEnded
            currentStateLabel.Text = "MediaEnded"

        Case 9 ' Transitioning
            currentStateLabel.Text = "Transitioning"

        Case 10 ' Ready
            currentStateLabel.Text = "Ready"

        Case 11 ' Reconnecting
            currentStateLabel.Text = "Reconnecting"

        Case 12 ' Last
            currentStateLabel.Text = "Last"

        Case Else
            currentStateLabel.Text = ("Unknown State: " + e.newState.ToString())

    End Select

End Sub

FakePre-a3b9c0c52658404681604504b2008830-325afe119c8e4b108ae128bb99f19a75

// Add a delegate for the PlayStateChange event.
player.PlayStateChange += new AxWMPLib._WMPOCXEvents_PlayStateChangeEventHandler(player_PlayStateChange);

private void player_PlayStateChange(object sender, AxWMPLib._WMPOCXEvents_PlayStateChangeEvent e)
{
    // Test the current state of the player and display a message for each state.
    switch (e.newState)
    {
        case 0:    // Undefined
            currentStateLabel.Text = "Undefined";
            break;

        case 1:    // Stopped
            currentStateLabel.Text = "Stopped";
            break;

        case 2:    // Paused
            currentStateLabel.Text = "Paused";
            break;

        case 3:    // Playing
            currentStateLabel.Text = "Playing";
            break;

        case 4:    // ScanForward
            currentStateLabel.Text = "ScanForward";
            break;

        case 5:    // ScanReverse
            currentStateLabel.Text = "ScanReverse";
            break;

        case 6:    // Buffering
            currentStateLabel.Text = "Buffering";
            break;

        case 7:    // Waiting
            currentStateLabel.Text = "Waiting";
            break;

        case 8:    // MediaEnded
            currentStateLabel.Text = "MediaEnded";
            break;

        case 9:    // Transitioning
            currentStateLabel.Text = "Transitioning";
            break;

        case 10:   // Ready
            currentStateLabel.Text = "Ready";
            break;

        case 11:   // Reconnecting
            currentStateLabel.Text = "Reconnecting";
            break;

        case 12:   // Last
            currentStateLabel.Text = "Last";
            break;

        default:
            currentStateLabel.Text = ("Unknown State: " + e.newState.ToString());
            break;
    }
}

Requirements

Version: Windows Media Player 9 Series or later

Namespace: AxWMPLib

Assembly: AxInterop.WMPLib.dll (automatically generated by Visual Studio)

See Also

• AxWindowsMediaPlayer Object (VB and C#)
• AxWindowsMediaPlayer.playState (VB and C#)

Previous

Next