Selection Property (Renderers)

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

public int Selection {get; set;}

'Declaration
 
Public Property Selection As Integer

'Usage
 
Dim instance As Renderers
Dim value As Integer
 
instance.Selection = value
 
value = instance.Selection

public int Selection {get; set;}

 get_Selection();
 set_Selection(value);

public:
property int Selection {
   int get();
   void set (    int value);
}

Property Value

The zero-based index of the selected item; otherwise -1 if no item selected.

Gets or sets the zero-based index of the currently selected Renderer item. Assignment could raise an error exception. For more information, refer to the Error Codes.

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

Copy Code

Public _result As Boolean = False
      Public _form As CaptureCtrlForm = New CaptureCtrlForm()
      Public _capturectrl As CaptureCtrl
      Public Sub AudioRenderersExample()
         ' output file
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_AudioRenderersExample.avi")

         ' reference the capture control
         _capturectrl = _form.CaptureCtrl

         Try
            ' set the source video device, select using your device name here
            If _capturectrl.VideoDevices("USB") Is Nothing Then
               Throw New Exception("No USB video device available")
            End If

            _capturectrl.VideoDevices("USB").Selected = True

            ' select a video compressor
            _capturectrl.VideoCompressors.Mpeg4.Selected = True

            ' set the target file
            _capturectrl.TargetFile = outFile

            ' reference the audio renderers collection
            Dim ar As AudioRenderers = _capturectrl.AudioRenderers

            ' get the current selection
            Dim currSelection As Integer = ar.Selection

            ' loop through the capture control's registered audio renderers
            For Each r As Renderer In ar
               ' select by renderer friendly name
               If r.FriendlyName = "Default DirectSound Device" AndAlso Not r Is ar(currSelection) Then
                  ' select it
                  r.Selected = True
                  Exit For
               End If

               ' select by renderer name (device name)
                     If r.Name = "@device:cm:{E0F158E1-CB04-11D0-BD4E-00A0C911CE86}\Default DirectSound Device" _
                       AndAlso Not r Is ar(currSelection) Then
                         ' select it
                         r.Selected = True
                         Exit For
                     End If
            Next r

            ' check the new selection
            Dim newSelection As Integer = ar.Selection

            ' set the result to what we expect
            _result = (currSelection <> newSelection)

            ' set the started event handler
            AddHandler _capturectrl.Started, AddressOf CaptureCtrl_Started

            ' run the capture
            _capturectrl.StartCapture(CaptureMode.Video)
         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 _capturectrl.State = CaptureState.Running
            Application.DoEvents()
         Loop
      End Sub

      Public Sub CaptureCtrl_Started(ByVal sender As Object, ByVal e As EventArgs)
         ' stop the capture
         _capturectrl.StopCapture()
      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 CaptureCtrlForm _form = new CaptureCtrlForm();
      public CaptureCtrl _capturectrl;
      public void AudioRenderersExample()
      {
         // output file
         string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_AudioRenderersExample.avi");

         // reference the capture control
         _capturectrl = _form.CaptureCtrl;

         try
         {
            // set the source video device, select using your device name here
            if (_capturectrl.VideoDevices["USB"] == null)
               throw new Exception("No USB video device available");

            _capturectrl.VideoDevices["USB"].Selected = true;

            // select a video compressor
            _capturectrl.VideoCompressors.Mpeg4.Selected = true;

            // set the target file
            _capturectrl.TargetFile = outFile;

            // reference the audio renderers collection
            AudioRenderers ar = _capturectrl.AudioRenderers;

            // get the current selection
            int currSelection = ar.Selection;

            // loop through the capture control's registered audio renderers
            foreach (Renderer r in ar)
            {
               // select by renderer friendly name
               if (r.FriendlyName == "Default DirectSound Device" && r != ar[currSelection])
               {
                  // select it
                  r.Selected = true;
                  break;
               }

               // select by renderer name (device name)
               if (r.Name == @"@device:cm:{E0F158E1-CB04-11D0-BD4E-00A0C911CE86}\Default DirectSound Device" && r != ar[currSelection])
               {
                  // select it
                  r.Selected = true;
                  break;
               }
            }

            // check the new selection
            int newSelection = ar.Selection;

            // set the result to what we expect
            _result = (currSelection != newSelection);

            // set the started event handler
            _capturectrl.Started += new EventHandler(CaptureCtrl_Started);

            // run the capture
            _capturectrl.StartCapture(CaptureMode.Video);
         }
         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 (_capturectrl.State == CaptureState.Running)
            Application.DoEvents();
      }

      public void CaptureCtrl_Started(object sender, EventArgs e)
      {
         // stop the capture
         _capturectrl.StopCapture();
      }

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

Renderers Class
Renderers Members