Started Event (CaptureCtrl)

Occurs when a capture operation has started.

Syntax

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public event EventHandler Started

'Declaration
 
Public Event Started As EventHandler

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

public event EventHandler Started

add_Started(function(sender, e))
remove_Started(function(sender, e))

public:
event EventHandler^ Started

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

Copy Code

Public _result As Boolean = False
      Public _form As CaptureCtrlForm = 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

            ' select a video compressor
            _capturectrl.VideoCompressors.Mpeg4.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 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

      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 175\Media";
End Class

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;

            // select a video compressor
            _capturectrl.VideoCompressors.Mpeg4.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 do not 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 175\Media";
}

Started Event (CaptureCtrl)

Reference