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EditGraph Method (ConvertCtrl)

Summary

Registers the current graph and runs the DirectShow GraphEdit utility.

Syntax

C++

public virtual void EditGraph()

Public Overridable Sub EditGraph()

public: 
virtual void EditGraph();

Remarks

Registers the current graph and runs the DirectShow GraphEdit utility. This method displays a modal dialog box indicating that the graph has been registered. The current thread is suspended during this time. The toolkit then attempts to invoke the GraphEdit utility from the DirectShow SDK. You can use GraphEdit's "Connect" menu option to view the registered graph. When finished, exit GraphEdit, and click the dialog's OK button to continue program execution.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public ConvertCtrlForm _form = new ConvertCtrlForm(); 
 
public void EditGraphExample() 
{ 
   // reference the convert control 
   ConvertCtrl convertctrl = _form.ConvertCtrl; 
 
   // set the input and output file names 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.mpeg"); 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_EditGraphExample.mpg"); 
 
   try 
   { 
      // set the source and target files 
      convertctrl.SourceFile = inFile; 
      convertctrl.TargetFile = outFile; 
 
      // set the preview 
      convertctrl.Preview = true; 
 
      // set a video compressor 
      convertctrl.VideoCompressors.Mpeg4.Selected = true; 
 
      // register the graph for GraphEdit  
      // you should see a message box that says the graph is registered  
      // after this message displays you can open GraphEdit and Connect to Remote Graph 
      convertctrl.EditGraph(); 
 
      // run 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(); 
 
   // set the result 
   _result = true; 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"; 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As ConvertCtrlForm = New ConvertCtrlForm() 
 
Public Sub EditGraphExample() 
   ' reference the convert control 
   Dim convertctrl As ConvertCtrl = _form.ConvertCtrl 
 
   ' input and output file names 
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.mpeg") 
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_EditGraphExample.mpg") 
 
   Try 
      ' set the source and target files 
      convertctrl.SourceFile = inFile 
      convertctrl.TargetFile = outFile 
 
      ' set the preview 
      convertctrl.Preview = True 
 
      ' set a video compressor 
      convertctrl.VideoCompressors.Mpeg4.Selected = True 
 
      ' register the graph for GraphEdit  
      ' you should see a message box that says the graph is registered  
      ' after this message displays you can open GraphEdit and Connect to Remote Graph 
      convertctrl.EditGraph() 
 
      ' run 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 
 
   ' set the result 
   _result = True 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media" 
End Class