PauseCapture Method

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Sub PauseCapture()

'Usage
 
Dim instance As CaptureCtrl
 
instance.PauseCapture()

public virtual void PauseCapture()

public:
virtual void PauseCapture();

Places the object in the CaptureState.Paused state. The object must be in the CaptureState.Pending or CaptureState.Running state prior to calling this method. To resume capturing, call the RunCapture method.

If the method fails, an error is raised. 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 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

        ' 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.
            While capturectrl.State = CaptureState.Running
                Application.DoEvents()
            End While
        End If
    Catch generatedExceptionName 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.MediaFoundation;
using LeadtoolsMediaFoundationExamples.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;

      // check if we have 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