Started Event (CaptureCtrl)

Occurs when a capture operation has started.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Event Started As EventHandler

'Usage
 
Dim instance As CaptureCtrl
Dim handler As EventHandler
 
AddHandler instance.Started, handler

public event EventHandler Started

public:
event EventHandler^ Started

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 _capturectrl As CaptureCtrl
Public Sub StartedExample()
    ' reference the capture control
    _capturectrl = _form.CaptureCtrl

    ' output file
    Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_StartedExample.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

        ' set the target output file
        _capturectrl.TargetFile = outFile

        If _capturectrl.IsModeAvailable(CaptureMode.Video) Then
            ' subscrible to the started event
            AddHandler _capturectrl.Started, AddressOf CaptureCtrl_Started

            ' start capture
            _capturectrl.StartCapture(CaptureMode.Video)
        End If
    Catch generatedExceptionName 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.
    While _capturectrl.State = CaptureState.Running
        Application.DoEvents()
    End While
End Sub

Private Sub CaptureCtrl_Started(ByVal sender As Object, ByVal e As EventArgs)
    ' stop the capture (we don't need a complete capture for this example)
    _capturectrl.StopCapture()

    ' set the result to what we expect
    _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 CaptureCtrl _capturectrl;
public void StartedExample()
{
   // reference the capture control
   _capturectrl = _form.CaptureCtrl;

   // output file
   string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_StartedExample.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;

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

      if (_capturectrl.IsModeAvailable(CaptureMode.Video))
      {
         // subscrible to the started event
         _capturectrl.Started += new EventHandler(CaptureCtrl_Started);

         // start capture
         _capturectrl.StartCapture(CaptureMode.Video);
      }
   }
   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();
}

void CaptureCtrl_Started(object sender, EventArgs e)
{
   // stop the capture (we don't need a complete capture for this example)
   _capturectrl.StopCapture();

   // set the result to what we expect
   _result = true;
}

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

Started Event (CaptureCtrl)

Reference