TimeLimit Property

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Property TimeLimit As Double

'Usage
 
Dim instance As CaptureCtrl
Dim value As Double
 
instance.TimeLimit = value
 
value = instance.TimeLimit

public virtual double TimeLimit {get; set;}

public:
virtual property double TimeLimit {
   double get();
   void set (    double value);
}

Property Value

A value representing the capture time limit.

The property is only used if the value of UseTimeLimit property is set to True. Assignment can raise an error exception. For more information, refer to the Error Codes.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As New CaptureCtrlForm()
Public Sub CapturePreviewExample()
    ' reference the capture control
    Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

    ' output file for processor settings
    Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_IsModeAvailableExample.avi")

    Try
        ' try to find a USB camera
        If capturectrl.VideoDevices("USB") Is Nothing Then
            Throw New Exception("No USB video device available")
        End If

        capturectrl.VideoDevices("USB").Selected = True

        ' try to find a USB audio device
        If capturectrl.AudioDevices("USB") Is Nothing Then
            Throw New Exception("No USB audio device available")
        End If

        capturectrl.AudioDevices("USB").Selected = True

        ' set the target output file
        capturectrl.TargetFile = outFile

        ' set the target output format
        capturectrl.TargetFormat = TargetFormatType.MP4

        ' check if we have can capture video
        If capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio) Then
            capturectrl.FrameRate = 5
            ' 5 frames per second 
            capturectrl.UseFrameRate = True
            capturectrl.TimeLimit = 10
            ' just 10 seconds of capture time
            capturectrl.UseTimeLimit = True

            ' subscribe to the complete event
            AddHandler capturectrl.Complete, AddressOf CaptureCtrl_Complete

            ' start the capture process
            capturectrl.StartCapture(CaptureMode.VideoAndAudio)

            ' 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()
            End While
        End If
    Catch generatedExceptionName As Exception
        _result = False
    End Try
End Sub

Public Sub CaptureCtrl_Complete(ByVal sender As Object, ByVal e As EventArgs)
    ' set result
    _result = True
End Sub

Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media"
End Class

using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CapturePreviewExample()
{
   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   // output file for processor settings
   string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_IsModeAvailableExample.avi");

   try
   {
      // try to find a USB camera
      if (capturectrl.VideoDevices["USB"] == null)
         throw new Exception("No USB video device available");

      capturectrl.VideoDevices["USB"].Selected = true;

      // try to find a USB audio device
      if (capturectrl.AudioDevices["USB"] == null)
         throw new Exception("No USB audio device available");

      capturectrl.AudioDevices["USB"].Selected = true;

      // set the target output file
      capturectrl.TargetFile = outFile;

      // set the target output format
      capturectrl.TargetFormat = TargetFormatType.MP4;

      // check if we have can capture video
      if (capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio))
      {
         capturectrl.FrameRate = 5;       // 5 frames per second 
         capturectrl.UseFrameRate = true;
         capturectrl.TimeLimit = 10;      // just 10 seconds of capture time
         capturectrl.UseTimeLimit = true;

         // subscribe to the complete event
         capturectrl.Complete += new EventHandler(CaptureCtrl_Complete);

         // start the capture process
         capturectrl.StartCapture(CaptureMode.VideoAndAudio);

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

public void CaptureCtrl_Complete(object sender, EventArgs e)
{
   // set result
   _result = true;
}

static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media";
}

Target Platforms

Reference

CaptureCtrl Class
CaptureCtrl Members