CurrentPosition Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public virtual double CurrentPosition {get; set;}

'Declaration
 
Public Overridable Property CurrentPosition As Double

'Usage
 
Dim instance As PlayCtrl
Dim value As Double
 
instance.CurrentPosition = value
 
value = instance.CurrentPosition

public virtual double CurrentPosition {get; set;}

 get_CurrentPosition();
 set_CurrentPosition(value);

public:
virtual property double CurrentPosition {
   double get();
   void set (    double value);
}

Property Value

A value representing the current playback position.

This property is the current position that playback has reached. The value ignores the playback rate and start time. For example, if the rate is set to 2.0 and the start time to 5 seconds, playing the media for 4 seconds yields a current position of 9.0 seconds (5 + 4 x 2.0). If the media is paused or stopped, the current position is the point at which playback will resume. Call CheckSeekingCapabilities to determine whether PlaySeeking.Forward and PlaySeeking.Backward are enabled. For more information, refer to the PlaySeeking enumeration.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Public _result As Boolean = False
      Public _form As PlayCtrlForm = New PlayCtrlForm()
      Private _duration As Double = 0.0
      Private _currentPos As Double = -1
      Public Sub PlayExample()
         ' reference the play control
         Dim playctrl As PlayCtrl = _form.PlayCtrl

         ' input file
         Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.avi")

         Try
            ' set autostart to false
            playctrl.AutoStart = False

            ' set the play count to 2
            playctrl.PlayCount = 2

            ' set our source media file
            playctrl.SourceFile = inFile

            ' get the reported duration
            _duration = playctrl.Duration

            ' set the playback rate to 2x
            If playctrl.IsRateSupported(2.0) Then
               playctrl.Rate = 2.0
            End If

            ' set event handler to get tracking position changes
            AddHandler playctrl.TrackingPositionChanged, AddressOf PlayCtrl_TrackingPositionChanged

            ' run it!
            playctrl.Run()
         Catch e1 As Exception
            _result = False
         End Try

         ' we'll loop on the state and pump messages for this example.
         ' but you should not need to if running from a Windows Forms application.
         Do While playctrl.State = PlayState.Running
            Application.DoEvents()
         Loop

         ' set the result to determine if the reported duration
         ' is the same as the final position from tracking
         _result = (_duration = _currentPos AndAlso _duration > 0.0)
      End Sub

      Private Sub PlayCtrl_TrackingPositionChanged(ByVal sender As Object, ByVal e As TrackingPositionChangedEventArgs)
         ' get the frame and tracking positions for demonstration only
         Dim frame As Integer = _form.PlayCtrl.CurrentFramePosition
         Dim tracking As Integer = _form.PlayCtrl.CurrentTrackingPosition

         ' get the current position
         _currentPos = Math.Max(_currentPos, _form.PlayCtrl.CurrentPosition)
      End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
End Class

public bool _result = false;
      public PlayCtrlForm _form = new PlayCtrlForm();
      double _duration = 0.0;
      double _currentPos = -1;
      public void PlayExample()
      {
         // reference the play control
         PlayCtrl playctrl = _form.PlayCtrl;

         // input file
         string inFile =Path.Combine(LEAD_VARS.MediaDir,"PlayCtrl_Source.avi");

         try
         {
            // set autostart to false
            playctrl.AutoStart = false;

            // set the play count to 2
            playctrl.PlayCount = 2;

            // set our source media file
            playctrl.SourceFile = inFile;

            // get the reported duration
            _duration = playctrl.Duration;

            // set the playback rate to 2x
            if (playctrl.IsRateSupported(2.0))
               playctrl.Rate = 2.0;

            // set event handler to get tracking position changes
            playctrl.TrackingPositionChanged += new TrackingPositionChangedEventHandler(PlayCtrl_TrackingPositionChanged);

            // run it!
            playctrl.Run();
         }
         catch (Exception)
         {
            _result = false;
         }

         // we'll loop on the state and pump messages for this example.
         // but you should not need to if running from a Windows Forms application.
         while (playctrl.State == PlayState.Running)
            Application.DoEvents();

         // set the result to determine if the reported duration
         // is the same as the final position from tracking
         _result = (_duration == _currentPos && _duration > 0.0);
      }

      void PlayCtrl_TrackingPositionChanged(object sender, TrackingPositionChangedEventArgs e)
      {
         // get the frame and tracking positions for demonstration only
         int frame = _form.PlayCtrl.CurrentFramePosition;
         int tracking = _form.PlayCtrl.CurrentTrackingPosition;

         // get the current position
         _currentPos = Math.Max(_currentPos, _form.PlayCtrl.CurrentPosition);
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

PlayCtrl Class
PlayCtrl Members