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OpenLogFile Method

Summary

Opens a log file for convert control operation details.

Syntax

C++/CLI

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.

Remarks

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.

Example

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:\LEADTOOLS22\Media"; 
}

Requirements

Target Platforms

Reference

ConvertCtrl Class

ConvertCtrl Members

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Help Version 22.0.2022.12.7

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies