EditGraph Method (CaptureCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Sub EditGraph()

'Usage
 
Dim instance As CaptureCtrl
 
instance.EditGraph()

public virtual void EditGraph()

public:
virtual void EditGraph();

This method will display a modal dialog box indicating that the graph has been registered. The current thread is suspended during this time. The toolkit then attempts to invoke the GraphEdit utility from the DirectShow SDK. You can use GraphEdit's "Connect" menu option to view the registered graph. When done, exit GraphEdit, and click on the dialog's OK button to continue program execution.

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

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Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public _capturectrl As CaptureCtrl
Public Sub EditGraphExample()
   ' reference the capture control
   _capturectrl = _form.CaptureCtrl

   ' output file names
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_EditGraphExample.mpg")

   Try
      ' set the source video device, select using your 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

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

      ' set the target file
      _capturectrl.TargetFile = outFile

      ' register the graph for GraphEdit 
      ' you should see a message box that says the graph is registered 
      ' once this message displays you can open GraphEdit and Connect to Remote Graph
      _capturectrl.EditGraph()

      ' set the started event handler
      AddHandler _capturectrl.Started, AddressOf CaptureCtrl_Started

      ' run the capture
      _capturectrl.StartCapture(CaptureMode.Video)

      ' set the result
      _result = True
   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()
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 CaptureCtrl _capturectrl;
public void EditGraphExample()
{
   // reference the capture control
   _capturectrl = _form.CaptureCtrl;

   // output file names
   string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_EditGraphExample.mpg");

   try
   {
      // set the source video device, select using your device name here
      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 file
      _capturectrl.TargetFile = outFile;

      // register the graph for GraphEdit 
      // you should see a message box that says the graph is registered 
      // once this message displays you can open GraphEdit and Connect to Remote Graph
      _capturectrl.EditGraph();

      // set the started event handler
      _capturectrl.Started += new EventHandler(CaptureCtrl_Started);

      // run the capture
      _capturectrl.StartCapture(CaptureMode.Video);

      // set the result
      _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();
}

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

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

Target Platforms

Reference

CaptureCtrl Class
CaptureCtrl Members