StopCapture Method

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Sub StopCapture()

'Usage
 
Dim instance As CaptureCtrl
 
instance.StopCapture()

public virtual void StopCapture()

public:
virtual void StopCapture();

Stops capturing data. Places the object in the CaptureState.Stopped state.

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 CaptureImageExample()
    ' reference the capture control
    Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

    Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_Source.avi")
    Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_CaptureImageExample.jpg")

    Try
        ' set the video capture device, use your capture device name here
        If capturectrl.VideoDevices("USB") Is Nothing Then
            Throw New Exception("No USB video device available")
        End If

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

        ' capture the image
        Dim image As Image = capturectrl.CaptureImage()

        If image IsNot Nothing Then
            image.Save(outFile, ImageFormat.Jpeg)
        End If

        ' stop the capture
        capturectrl.StopCapture()

        ' check for the capture file and set the result
        If File.Exists(Path.Combine(Directory.GetCurrentDirectory(), outFile)) Then
            _result = True
        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

Public Sub CaptureImage_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 CaptureImageExample()
{
   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   string inFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_Source.avi");
   string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_CaptureImageExample.jpg");

   try
   {
      // set the video capture device, use your capture device name here
      if (capturectrl.VideoDevices["USB"] == null)
         throw new Exception("No USB video device available");

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

      // capture the image
      Image image = capturectrl.CaptureImage();

      if (image != null)
         image.Save(outFile, ImageFormat.Jpeg);

      // stop the capture
      capturectrl.StopCapture();

      // check for the capture file and set the result
      if (File.Exists(Path.Combine(Directory.GetCurrentDirectory(), outFile)))
         _result = true;
   }
   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();
}

public void CaptureImage_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