Progress Event (ConvertCtrl)

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public event ProgressEventHandler Progress

'Declaration
 
Public Event Progress As ProgressEventHandler

'Usage
 
Dim instance As ConvertCtrl
Dim handler As ProgressEventHandler
 
AddHandler instance.Progress, handler

public event ProgressEventHandler Progress

add_Progress(function(sender, e))
remove_Progress(function(sender, e))

public:
event ProgressEventHandler^ Progress

The event handler receives an argument of type ProgressEventArgs containing data related to this event. The following ProgressEventArgs properties provide information specific to this event.

Property	Description
percent	The percentage complete for convert progress notifications.
time	The time elapsed for capture progress notifications.

The event handler is passed a ProgressEventArgs containing the percentage completed.

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

Copy Code

Public _result As Boolean = False
      Public _form As ConvertCtrlForm = New ConvertCtrlForm()
      Public Sub ProgressExample()
         Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi")
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_ProgressExample.avi")

         ' reference the convert control
         Dim convertctrl As ConvertCtrl = _form.ConvertCtrl

         Try
            ' set the input and output files
            convertctrl.SourceFile = inFile
            convertctrl.TargetFile = outFile

                 ' select the video and audio compressors for the output
            convertctrl.VideoCompressors.H264.Selected = True
            convertctrl.AudioCompressors.AMR.Selected = True

            ' set our progress event handler
            AddHandler convertctrl.Progress, AddressOf ConvertCtrl_Progress

            ' convert it now!
            convertctrl.StartConvert()
         Catch cex As COMException
            If cex.ErrorCode = CInt(ErrorCode.VFW_E_WRONG_STATE) Then
               Throw cex
            End If
            _result = False
         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 convertctrl.State = ConvertState.Running
            Application.DoEvents()
         Loop
      End Sub

      Public Sub ConvertCtrl_Progress(ByVal sender As Object, ByVal e As ProgressEventArgs)
         ' set the result to true if complete
         If e.percent = 100 Then
            _result = True
         End If
      End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
End Class

public bool _result = false;
      public ConvertCtrlForm _form = new ConvertCtrlForm();
      public void ProgressExample()
      {
         string inFile =Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_Source.avi");
         string outFile = Path.Combine(LEAD_VARS.MediaDir,"ConvertCtrl_ProgressExample.avi");

         // reference the convert control
         ConvertCtrl convertctrl = _form.ConvertCtrl;

         try
         {
            // set the input and output files
            convertctrl.SourceFile = inFile;
            convertctrl.TargetFile = outFile;

            // select video and audio compressors for the output
            convertctrl.VideoCompressors.H264.Selected = true;
            convertctrl.AudioCompressors.AMR.Selected = true;

            // set our progress event handler
            convertctrl.Progress += new ProgressEventHandler(ConvertCtrl_Progress);

            // convert it now!
            convertctrl.StartConvert();
         }
         catch (COMException cex)
         {
            if (cex.ErrorCode == (int)ErrorCode.VFW_E_WRONG_STATE)
               throw cex;
            _result = false;
         }
         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 (convertctrl.State == ConvertState.Running)
            Application.DoEvents();
      }

      public void ConvertCtrl_Progress(object sender, ProgressEventArgs e)
      {
         // set the result to true if complete
         if (e.percent == 100)
            _result = true;
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

ConvertCtrl Class
ConvertCtrl Members