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VideoDevices Property

Summary

Gets the video device collection object.

Syntax

C++/CLI

[EditorAttribute(System.Type, System.Type)] 
public virtual VideoDevices VideoDevices { get; }

public: 
virtual property VideoDevices^ VideoDevices { 
   VideoDevices^ get(); 
}

Property Value

A VideoDevices collection object.

Remarks

The VideoDevices object is used to enumerate the available video capture devices.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void RunCaptureExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_RunCaptureExample.avi"); 
 
   try 
   { 
      // try to find a USB camera 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // set the target output file 
      capturectrl.TargetFile = outFile; 
 
      // select a video compressor 
      capturectrl.VideoCompressors.Mpeg4.Selected = true; 
 
      // check whether we can capture video 
      if (capturectrl.IsModeAvailable(CaptureMode.Video)) 
      { 
         capturectrl.FrameDelay = .033;  // 30 frames per second 
         capturectrl.TimeLimit = 10;     // just 10 seconds of capture time 
         capturectrl.UseTimeLimit = true; 
 
         // subscribe to the compete event 
         capturectrl.Complete += RunCapture_Helper; 
 
         // prepare the capture process 
         capturectrl.ReadyCapture(CaptureMode.Video | CaptureMode.InhibitRun); 
 
         // actually run the capture now! 
         capturectrl.RunCapture(); 
 
         // 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(); 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
public void RunCapture_Helper(object sender, EventArgs e) 
{ 
   // set result 
   _result = true; 
} 
 
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