LEADTOOLS Multimedia (Leadtools.MediaFoundation assembly)

Selected Property (CaptureSubType)

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Example 



Gets or sets the capture subtype selection state.
Syntax
'Declaration
 
Public Property Selected As Boolean
'Usage
 
Dim instance As CaptureSubType
Dim value As Boolean
 
instance.Selected = value
 
value = instance.Selected
public bool Selected {get; set;}
public:
property bool Selected {
   bool get();
   void set (    bool value);
}

Property Value

true if the capture subtype is currently selected; otherwise, it is false
Remarks
Gets or sets the capture subtype selection state. Assignment can raise an error exception. For more information, refer to the Error Codes.
Example
Copy Code  
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub CaptureSubTypesExample()
   Dim name, friendlyName 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 subTypes As CaptureSubTypes = capturectrl.VideoCaptureSubTypes

   ' save the current subtype selection
   selection = subTypes.Selection

   Try
      ' select an capture subtype by name for MPEG2Video if available
      If Not subTypes(Leadtools.MediaFoundation.Constants.MEDIASUBTYPE_MPEG2Video) Is Nothing Then
         subTypes(Leadtools.MediaFoundation.Constants.MEDIASUBTYPE_MPEG2Video).Selected = True
      Else ' else try YUY2
         If Not subTypes(Leadtools.MediaFoundation.Constants.MEDIASUBTYPE_YUY2) Is Nothing Then
            subTypes(Leadtools.MediaFoundation.Constants.MEDIASUBTYPE_YUY2).Selected = True
         End If
      End If

      For Each cst As CaptureSubType In subTypes
         ' get the subtype properties
         name = cst.Name
         friendlyName = cst.FriendlyName

         ' if we found the video tuner input
         If friendlyName = "YUY2" Then
            ' select it and break
            cst.Selected = True
            Exit For
         End If
      Next cst

      ' set the result to what we expect
      _result = (selection = subTypes.Selection)

   Catch e1 As Exception
      _result = False
   End Try
End Sub
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CaptureSubTypesExample()
{
   string name, friendlyName;
   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
   CaptureSubTypes subTypes = capturectrl.VideoCaptureSubTypes;

   // save the current subtype selection
   selection = subTypes.Selection;

   try
   {
      // select an capture subtype by name for MPEG2Video if available
      if (subTypes[Constants.MEDIASUBTYPE_MPEG2Video] != null)
      {
         subTypes[Constants.MEDIASUBTYPE_MPEG2Video].Selected = true;
      }
      else // else try YUY2
      if (subTypes[Constants.MEDIASUBTYPE_YUY2] != null)
      {
         subTypes[Constants.MEDIASUBTYPE_YUY2].Selected = true;
      }

      foreach (CaptureSubType cst in subTypes)
      {
         // get the subtype properties
         name = cst.Name;
         friendlyName = cst.FriendlyName;

         // if we found the video tuner input
         if (friendlyName == "YUY2")
         {
            // select it and break
            cst.Selected = true;
            break;
         }
      }

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

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

Target Platforms

See Also

Reference

CaptureSubType Class
CaptureSubType Members

 

 


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Leadtools.MediaFoundation requires a Multimedia or Multimedia Suite license and unlock key. For more information, refer to: LEADTOOLS Toolkit Features