State Property (CaptureCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Shadows ReadOnly Property State As CaptureState

'Usage
 
Dim instance As CaptureCtrl
Dim value As CaptureState
 
value = instance.State

public virtual new CaptureState State {get;}

public:
virtual new property CaptureState State {
   CaptureState get();
}

Property Value

A CaptureState enumeration value indicating the current control state.

The value is one of the CaptureState enumeration values.

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

Copy Code

Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub RunCaptureExample()
   ' reference the capture control
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_RunCaptureExample.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

      ' select a video compressor
      capturectrl.VideoCompressors.Mpeg4.Selected = True

      ' check if we have can capture video
      If capturectrl.IsModeAvailable(CaptureMode.Video) Then
         capturectrl.FrameDelay = 0.033 ' 30 frames per second
         capturectrl.TimeLimit = 10 ' just 10 seconds of capture time
         capturectrl.UseTimeLimit = True

         ' subscribe to the compete event
         AddHandler capturectrl.Complete, AddressOf RunCapture_Helper

         ' prepare the capture process
         capturectrl.ReadyCapture(CaptureMode.Video Or CaptureMode.InhibitRun)

         ' actually run the capture now!
         capturectrl.RunCapture()

         ' 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 If
   Catch e1 As Exception
      _result = False
   End Try
End Sub

Public Sub RunCapture_Helper(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.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void RunCaptureExample()
{
   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;
   string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_RunCaptureExample.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;

      // select a video compressor
      capturectrl.VideoCompressors.Mpeg4.Selected = true;

      // check whether we can capture video
      if (capturectrl.IsModeAvailable(CaptureMode.Video))
      {
         capturectrl.FrameDelay = .033;  // 30 frames per second
         capturectrl.TimeLimit = 10;     // just 10 seconds of capture time
         capturectrl.UseTimeLimit = true;

         // subscribe to the compete event
         capturectrl.Complete += RunCapture_Helper;

         // prepare the capture process
         capturectrl.ReadyCapture(CaptureMode.Video | CaptureMode.InhibitRun);

         // actually run the capture now!
         capturectrl.RunCapture();

         // 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 RunCapture_Helper(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