EditGraph Method

Summary

Registers the current graph and runs the DirectShow GraphEdit utility.

Syntax
C#
VB
C++
public virtual void EditGraph() 
Public Overridable Sub EditGraph()  
public: 
virtual void EditGraph();  
Remarks

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. Use GraphEdit's "Connect" menu option to view the registered graph. When finished, exit GraphEdit, and click on the dialog's OK button to continue program execution.

Example
C#
VB
using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public PlayCtrlForm _form = new PlayCtrlForm(); 
 
public void EditGraphExample() 
{ 
   // reference the convert control 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   // input file name 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.mpeg"); 
 
   try 
   { 
      // turn off auto start 
      playctrl.AutoStart = false; 
 
      // set the source and target files 
      playctrl.SourceFile = inFile; 
 
      // register the graph for GraphEdit  
      // you should see a message box that says the graph is registered  
      // once this message displays you can open GraphEdit and Connect to Remote Graph 
      playctrl.EditGraph(); 
 
      // play it! 
      playctrl.Run(); 
   } 
   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 (playctrl.State == PlayState.Running) 
      Application.DoEvents(); 
 
   // set the result 
   _result = true; 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"; 
} 
Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As PlayCtrlForm = New PlayCtrlForm() 
 
Public Sub EditGraphExample() 
   ' reference the convert control 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
   ' input file name 
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.mpeg") 
 
   Try 
      ' turn off auto start 
      playctrl.AutoStart = False 
 
      ' set the source and target files 
      playctrl.SourceFile = inFile 
 
      ' register the graph for GraphEdit  
      ' you should see a message box that says the graph is registered  
      ' once this message displays you can open GraphEdit and Connect to Remote Graph 
      playctrl.EditGraph() 
 
      ' play it! 
      playctrl.Run() 
   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 playctrl.State = PlayState.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 20\Media" 
End Class 
Requirements

Target Platforms

See Also

Reference

PlayCtrl Class

PlayCtrl Members

Help Version 20.0.2019.11.25
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Leadtools.Multimedia Assembly