←Select platform

SignalPresent Property

Summary

Gets a value which indicates whether a signal is present on the current channel.

Syntax

C++

public TunerSignalStrength SignalPresent { get; }

Public ReadOnly Property SignalPresent As Leadtools.Mediafoundation.TunerSignalStrength

public: 
property Leadtools.Mediafoundation.TunerSignalStrength SignalPresent { 
   Leadtools.Mediafoundation.TunerSignalStrength get(); 
}

Property Value

A TunerSignalStrength enumeration value indicating the signal's presence. For more detailed information, refer to the Microsoft documentation for IAMTuner.SignalPresent.

Remarks

Indicates whether a signal is present on the current channel.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void SignalPresentExample() 
{ 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
   TVTuner tvtuner = capturectrl.TVTuner; 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "TVTuner_SignalPresentExample.wmv"); 
 
   try 
   { 
   } 
   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(); 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"; 
}

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub SignalPresentExample() 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
   Dim tvtuner As TVTuner = capturectrl.TVTuner 
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "TVTuner_SignalPresentExample.wmv") 
 
   Try 
   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 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media" 
End Class

Requirements

Target Platforms

Reference

TVTuner Class

TVTuner Members

Help Version 19.0.2017.10.27

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies