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EditGraph Method

Summary

Registers the current graph and runs the DirectShow GraphEdit utility.

Syntax

C++/CLI

public virtual void EditGraph()

public: 
virtual void EditGraph();

Remarks

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.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
public CaptureCtrl _capturectrl; 
 
public void EditGraphExample() 
{ 
   // reference the capture control 
   _capturectrl = _form.CaptureCtrl; 
 
   // output file names 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_EditGraphExample.mpg"); 
 
   try 
   { 
      // set the source video device, select using your device name here 
      if (_capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      _capturectrl.VideoDevices["USB"].Selected = true; 
 
      // select a video compressor 
      _capturectrl.VideoCompressors.Mpeg4.Selected = true; 
 
      // set the target file 
      _capturectrl.TargetFile = outFile; 
 
      // 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 
      _capturectrl.EditGraph(); 
 
      // set the started event handler 
      _capturectrl.Started += new EventHandler(CaptureCtrl_Started); 
 
      // run the capture 
      _capturectrl.StartCapture(CaptureMode.Video); 
 
      // set the result 
      _result = true; 
   } 
   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 (_capturectrl.State == CaptureState.Running) 
      Application.DoEvents(); 
} 
 
void CaptureCtrl_Started(object sender, EventArgs e) 
{ 
   // stop the capture (we do not need a complete capture for this example) 
   _capturectrl.StopCapture(); 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\LEADTOOLS23\Media"; 
}

Requirements

Target Platforms

Reference

CaptureCtrl Class

CaptureCtrl Members

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Help Version 23.0.2024.2.29

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies