LEADTOOLS Multimedia (Leadtools.Multimedia assembly) Send comments on this topic. | Back to Introduction | Help Version 17.0.3.22
EditGraph Method
See Also 
Leadtools.Multimedia Namespace > ConvertCtrl Class : EditGraph Method



Registers the current graph and runs the DirectShow GraphEdit utility.

Syntax

Visual Basic (Declaration) 
Public Overridable Sub EditGraph() 
Visual Basic (Usage)Copy Code
Dim instance As ConvertCtrl
 
instance.EditGraph()
C# 
public virtual void EditGraph()
C++/CLI 
public:
virtual void EditGraph(); 

Example

Visual BasicCopy Code
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 
            ' once 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 17\Media"
End Class
C#Copy Code
public bool _result = false;
      public ConvertCtrlForm _form = new ConvertCtrlForm();
      public void EditGraphExample()
      {
         // reference the convert control
         ConvertCtrl convertctrl = _form.ConvertCtrl;

         // 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 
            // once 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 17\Media";
}

Remarks

Registers the current graph and runs the DirectShow GraphEdit utility. This method will display 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 done, exit GraphEdit, and click on the dialog's OK button to continue program execution.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also