In This Topic ▼

Selected Property

Summary

Gets or sets the capture subtype selection state.

Syntax

C++

public bool Selected {get; set;}

Public Property Selected As Boolean

public: 
property bool Selected { 
   bool get(); 
   void set (    bool ); 
}

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

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; 
   } 
}

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

Requirements

Target Platforms

Reference

CaptureSubType Class

CaptureSubType Members

Download our FREE evaluation

Help Version 20.0.2020.4.2

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies