EnterEdit Method

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Sub EnterEdit()

'Usage
 
Dim instance As CaptureCtrl
 
instance.EnterEdit()

public virtual void EnterEdit()

public:
virtual void EnterEdit();

EnterEdit and LeaveEdit help speed up application startup.

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

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

    Try
        ' enter edit mode so that all graph changes will be 
        ' made at one time (after the LeaveEdit call later)
        capturectrl.EnterEdit()

        ' 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


        ' set the target file
        capturectrl.TargetFile = outFile

        capturectrl.FrameRate = 5
        ' 5 frames per second 
        capturectrl.UseFrameRate = True
        capturectrl.TimeLimit = 10
        ' just 10 seconds of capture time
        capturectrl.UseTimeLimit = True

        ' apply the graph changes now
        capturectrl.LeaveEdit()

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

        ' set the result
        _result = True
    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 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 EnterEditExample()
{
   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

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

   try
   {
      // enter edit mode so that all graph changes will be 
      // made at one time (after the LeaveEdit call later)
      capturectrl.EnterEdit();

      // 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;


      // set the target file
      capturectrl.TargetFile = outFile;

      capturectrl.FrameRate = 5;       // 5 frames per second 
      capturectrl.UseFrameRate = true;
      capturectrl.TimeLimit = 10;      // just 10 seconds of capture time
      capturectrl.UseTimeLimit = true;

      // apply the graph changes now
      capturectrl.LeaveEdit();

      // 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();
}

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

Target Platforms

Reference

CaptureCtrl Class
CaptureCtrl Members