In This Topic ▼

NumInputConnections Property

Summary

Gets the number of TV sources plugged into the tuner filter.

Syntax

C++

public int NumInputConnections { get; }

Public ReadOnly Property NumInputConnections As Integer

public: 
property int NumInputConnections { 
   int get(); 
}

Property Value

A value which represents the number of TV inputs

Remarks

Gets the number of TV sources plugged into the tuner filter. For more detailed information, refer to the Microsoft documentation for IAMTVTuner.get_NumInputConnections.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void NumInputConnectionsExample() 
{ 
   // reference the forms capture control and tv tuner 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   try 
   { 
      // select the first device with digital in it's name 
      // Replace "Digital" with your video capture device name 
      if (capturectrl.VideoDevices["Digital"] == null) 
         throw new Exception("No Digital video devices available!"); 
 
      capturectrl.VideoDevices["Digital"].Selected = true; 
 
      // get the TV Tuner device 
      TVTuner tvtuner = capturectrl.TVTuner; 
 
      // check whether the TV tuner is valid 
      if (tvtuner != null) 
      { 
         // connect the first input 
         tvtuner.ConnectInput = 0; 
 
         // set the result 
         _result = true; 
      } 
   } 
   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(); 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub NumInputConnectionsExample() 
   ' reference the forms capture control and tv tuner 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
   Try 
      ' select the first device with analog in it's name 
      ' Replace "Analog" with your video capture device name 
      If capturectrl.VideoDevices("Digital") Is Nothing Then 
         Throw New Exception("No Digital video devices available!") 
      End If 
 
      capturectrl.VideoDevices("Digital").Selected = True 
 
      ' get the TV Tuner device 
      Dim tvtuner As TVTuner = capturectrl.TVTuner 
 
      ' Check if TV tuner is valid 
      If Not tvtuner Is Nothing Then 
         ' connect the first input 
         tvtuner.ConnectInput = 0 
 
         ' set the result 
         _result = True 
      End If 
   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

Requirements

Target Platforms

Reference

TVTuner Class

TVTuner Members

Download our FREE evaluation

Help Version 20.0.2020.4.2

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies