SignalPresent Property

Summary
Gets a value which indicates whether a signal is present on the current channel.
Syntax
C#
VB
C++
public TunerSignalStrength SignalPresent { get; } 
Public ReadOnly Property SignalPresent As TunerSignalStrength 
public: 
property TunerSignalStrength SignalPresent { 
   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
C#
VB
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:\LEADTOOLS21\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:\LEADTOOLS21\Media" 
End Class 
Requirements

Target Platforms

See Also

Reference

TVTuner Class

TVTuner Members

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Leadtools.MediaFoundation Assembly