Refresh Method (TargetDevices)

C#
Visual Basic
Objective-C
Java
C++

public void Refresh()

'Declaration

Public Sub Refresh()

'Usage

Dim instance As TargetDevices
 
instance.Refresh()

public:
void Refresh();

Rebuilds the device collection. This method will rebuild the collection of system-registered devices. It is usually called from applications that respond to system device change notifications. If the method fails, an error is raised. For more information, refer to the Error Codes.

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

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Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures

Public _result As Boolean = False
Public _form As ConvertCtrlForm = New ConvertCtrlForm()
Public Sub TargetDevicesExample()
   Dim inputName, inputFriendlyName As String
   Dim selectedCamera As Integer

   ' reference the convert control
   Dim convertctrl As ConvertCtrl = _form.ConvertCtrl

   Try
      ' get the target devices object
      Dim devices As TargetDevices = convertctrl.TargetDevices

      ' select an input by name if possible
      If devices("Microsoft DV Camera") Is Nothing Then
         Throw New Exception("No MS DV Camera device available!")
      End If

      devices("Microsoft DV Camera").Selected = True

      ' get the full friendly name of the device 
      Dim friendlyName As String = devices("Microsoft DV Camera").FriendlyName

      ' get the selected index of the currently selected target device
      ' (the MS DV camera above)
      selectedCamera = devices.Selection

      ' now enumerate all the target devices,
      ' looking for an audio device and select it
      For Each td As TargetDevice In devices
         ' get the inputs properties
         inputName = td.Name
         inputFriendlyName = td.FriendlyName

         ' if we found a target audio device
         If inputFriendlyName.Contains("Audio") Then
            ' select it and break
            td.Selected = True
            Exit For
         End If
      Next td

      ' set the result to what we expect
      _result = (selectedCamera <> devices.Selection)

   Catch e1 As Exception
      _result = False
   End Try
End Sub

using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;

public bool _result = false;
public ConvertCtrlForm _form = new ConvertCtrlForm();
public void TargetDevicesExample()
{
   string inputName, inputFriendlyName;
   int selectedCamera;

   // reference the convert control
   ConvertCtrl convertctrl = _form.ConvertCtrl;

   try
   {
      // get the target devices object
      TargetDevices devices = convertctrl.TargetDevices;

      // select an input by name if possible
      if (devices["Microsoft DV Camera"] == null)
         throw new Exception("No MS DV Camera device available!");

      devices["Microsoft DV Camera"].Selected = true;

      // get the full friendly name of the device 
      string friendlyName = devices["Microsoft DV Camera"].FriendlyName;

      // get the selected index of the currently selected target device
      // (the MS DV camera above)
      selectedCamera = devices.Selection;

      // now enumerate all the target devices,
      // looking for an audio device and select it
      foreach (TargetDevice td in devices)
      {
         // get the inputs properties
         inputName = td.Name;
         inputFriendlyName = td.FriendlyName;

         // if we found a target audio device
         if (inputFriendlyName.Contains("Audio"))
         {
            // select it and break
            td.Selected = true;
            break;
         }
      }

      // set the result to what we expect
      _result = (selectedCamera != devices.Selection);

   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

TargetDevices Class
TargetDevices Members