LEADTOOLS Multimedia (Leadtools.Multimedia assembly) Send comments on this topic. | Back to Introduction | Help Version 17.0.3.22
Selected Property
See Also 
Leadtools.Multimedia Namespace > CaptureInput Class : Selected Property



Gets the capture input selection state.

Syntax

Visual Basic (Declaration) 
Public Property Selected As Boolean
Visual Basic (Usage)Copy Code
Dim instance As CaptureInput
Dim value As Boolean
 
instance.Selected = value
 
value = instance.Selected
C# 
public bool Selected {get; set;}
C++/CLI 
public:
property bool Selected {
   bool get();
   void set (    bool value);
}

Property Value

true if the input is currently selected; false, otherwise.

Example

Visual BasicCopy Code
Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub CaptureInputsExample()
  Dim inputName, inputFriendlyName As String
  Dim selection As Integer

  ' reference the capture control
  Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

  ' select a video device, use your device name here instead of Analog
  If capturectrl.VideoDevices("Analog") Is Nothing Then
     Throw New Exception("No Analog video tuner device available")
  End If

  capturectrl.VideoDevices("Analog").Selected = True

  ' get the audio inputs object
  Dim inputs As CaptureInputs = capturectrl.VideoInputs

  Try
     ' select an input by name if possible
     If Not inputs("Video Composite") Is Nothing Then
       inputs("Video Composite").Selected = True
     End If

     ' get the current selected input
     selection = inputs.Selection

     For Each ci As CaptureInput In inputs
       ' get the inputs properties
       inputName = ci.Name
       inputFriendlyName = ci.FriendlyName

       ' if we found the video tuner input
       If inputFriendlyName = "Video Tuner" Then
         ' select it and break
         ci.Selected = True
         Exit For
       End If
     Next ci

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

  Catch e1 As Exception
     _result = False
  End Try
End Sub
C#Copy Code
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CaptureInputsExample()
{
   string inputName, inputFriendlyName;
   int selection;

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

   // select a video device, use your device name here instead of Analog
   if (capturectrl.VideoDevices["Analog"] == null)
      throw new Exception("No Analog video tuner device available");

   capturectrl.VideoDevices["Analog"].Selected = true;

   // get the audio inputs object
   CaptureInputs inputs = capturectrl.VideoInputs;

   try
   {
      // select an input by name if possible
      if (inputs["Video Composite"] != null)
         inputs["Video Composite"].Selected = true;

      // get the current selected input
      selection = inputs.Selection;

      foreach (CaptureInput ci in inputs)
      {
         // get the inputs properties
         inputName = ci.Name;
         inputFriendlyName = ci.FriendlyName;

         // if we found the video tuner input
         if (inputFriendlyName == "Video Tuner")
         {
            // select it and break
            ci.Selected = true;
            break;
         }
      }

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

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

Remarks

Assignment can raise an error exception.

For more information, refer to the Error Codes.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also