OpenLogFile Method

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Sub OpenLogFile( _
   ByVal fileName As String, _
   ByVal flags As LogFileFlags _
)

'Usage
 
Dim instance As ConvertCtrl
Dim fileName As String
Dim flags As LogFileFlags
 
instance.OpenLogFile(fileName, flags)

public virtual void OpenLogFile( 
   string fileName,
   LogFileFlags flags
)

public:
virtual void OpenLogFile( 
   String^ fileName,
   LogFileFlags flags
)

Parameters

fileName: A string that contains the name of the file to be used to save the logging information.
flags: Value that represents the desired logging options. For a list of possible values, refer to LogFileFlags enumeration values.

Opens a log file for convert control operation details. Use the CloseLogFile method to stop logging data to the file and close the file. If the filename passed to the filename parameter is an empty string, then the method will return an error. If the filename passed to the filename parameter currently exists, and the LogFileFlags.Append flag has not been passed in the flags parameter the existing file will be overwritten.

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 ConvertCtrlForm = New ConvertCtrlForm()
Public Sub LogFileExample()
   ' reference the convert control
   Dim convertctrl As ConvertCtrl = _form.ConvertCtrl

   ' input and output files
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_HasDialogExample.avi")

   ' log file
   Dim logFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Log.txt")

   Try
      ' set the source for conversion
      convertctrl.SourceFile = inFile

      ' set the video and audio compressors
      convertctrl.VideoCompressors.Mpeg2.Selected = True
      convertctrl.AudioCompressors.AC3.Selected = True

      ' set the target output file and format
      convertctrl.TargetFile = outFile

      ' set the target output format
      convertctrl.TargetFormat = TargetFormatType.AVI

           ' set the log file for the conversion process 
      ' information logging
      convertctrl.OpenLogFile(logFile, LogFileFlags.SourceInfo Or LogFileFlags.GraphBuilder Or LogFileFlags.StreamInfo)

      ' start the capture process
      convertctrl.StartConvert()

      ' 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 convertctrl.State = ConvertState.Running
         Application.DoEvents()
      Loop

      ' close the log file
      convertctrl.CloseLogFile()

      ' set the result to what we expect
      _result = (File.Exists(logFile))
   Catch e1 As Exception
      _result = False
   End Try
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 ConvertCtrlForm _form = new ConvertCtrlForm();
public void LogFileExample()
{
   // reference the convert control
   ConvertCtrl convertctrl = _form.ConvertCtrl;

   // input and output files
   string inFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Source.avi");
   string outFile =Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_HasDialogExample.avi");

   // log file
   string logFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Log.txt");

   try
   {
      // set the source for conversion
      convertctrl.SourceFile = inFile;

      // set the video and audio compressors
      convertctrl.VideoCompressors.Mpeg2.Selected = true;
      convertctrl.AudioCompressors.AC3.Selected = true;

      // set the target output file and format
      convertctrl.TargetFile = outFile;

      // set the target output format
      convertctrl.TargetFormat = TargetFormatType.AVI;

      // set the log file for conversion process 
      // information logging
      convertctrl.OpenLogFile(logFile, LogFileFlags.SourceInfo | LogFileFlags.GraphBuilder | LogFileFlags.StreamInfo);

      // start the capture process
      convertctrl.StartConvert();

      // 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 (convertctrl.State == ConvertState.Running)
         Application.DoEvents();

      // close the log file
      convertctrl.CloseLogFile();

      // set the result to what we expect
      _result = (File.Exists(logFile));
   }
   catch (Exception)
   {
      _result = false;
   }
}

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

Target Platforms

Reference

ConvertCtrl Class
ConvertCtrl Members