GetSubObject Method (ConvertCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Function GetSubObject( _
   ByVal objType As ConvertObject _
) As Object

'Usage
 
Dim instance As ConvertCtrl
Dim objType As ConvertObject
Dim value As Object
 
value = instance.GetSubObject(objType)

public virtual object GetSubObject( 
   ConvertObject objType
)

public:
virtual Object^ GetSubObject( 
   ConvertObject objType
)

Parameters

objType: Value that specifies which graph sub-object to get. Must be one of the ConvertObject enumeration values.

Return Value

ConvertObject

Gets the specified graph sub-object (including a filter being cached) from the convert graph. If the method fails, an error is raised.

For more information, refer to the Error Codes.

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 GetSubObjectExample()
   ' 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_GetSubObjectExample.avi")

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

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

      ' add the color adjustment processor
      convertctrl.SelectedVideoProcessors.Add(convertctrl.VideoProcessors.Color)

      ' access the processor directly
      Dim lmvc As LMVColor = TryCast(convertctrl.GetSubObject(ConvertObject.SelVideoProcessor), LMVColor)

      If Not lmvc Is Nothing Then
         ' change some settings
         lmvc.Brightness = 85
         lmvc.Contrast = 85
         lmvc.Enabled = True
         lmvc.EffectAreaEnabled = False

         Marshal.ReleaseComObject(lmvc)
      End If

      ' start the convert
      convertctrl.StartConvert()
   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 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 GetSubObjectExample()
{
   // 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_GetSubObjectExample.avi");

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

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

      // add the color adjustment processor
      convertctrl.SelectedVideoProcessors.Add(convertctrl.VideoProcessors.Color);

      // access the processor directly
      LMVColor lmvc = convertctrl.GetSubObject(ConvertObject.SelVideoProcessor) as LMVColor;

      if (lmvc != null)
      {
         // change some settings
         lmvc.Brightness = 85;
         lmvc.Contrast = 85;
         lmvc.Enabled = true;
         lmvc.EffectAreaEnabled = false;

         Marshal.ReleaseComObject(lmvc);
      }

      // start the convert
      convertctrl.StartConvert();
   }
   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();
}

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

Target Platforms

Reference

ConvertCtrl Class
ConvertCtrl Members