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TargetDevices Property

Summary

Gets or sets the target device collection object.

Syntax

C++/CLI

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

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

Property Value

A TargetDevices object representing the capture output devices.

Remarks

The TargetDevices object is used to enumerate and select capture output devices.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
// capture control 
CaptureCtrl capturectrl; 
 
public void TargetDevicesExample() 
{ 
   // reference the capture control 
   capturectrl = _form.CaptureCtrl; 
 
   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; 
 
      // try to find a USB audio device 
      if (capturectrl.AudioDevices["USB"] == null) 
      { 
         throw new Exception("No USB audio device available"); 
      } 
 
      capturectrl.AudioDevices["USB"].Selected = true; 
 
      // set the target device, select the first target device 
      TargetDevices Devices = capturectrl.TargetDevices; 
      if (Devices[0] == null) 
      { 
         throw new Exception("No target device available"); 
      } 
 
      Devices.Selection = 2; 
 
      // set MPEG2 as the video compressor 
      capturectrl.VideoCompressors.Mpeg2.Selected = true; 
 
      // set AC3 as the audio compressor 
      capturectrl.AudioCompressors.AC3.Selected = true; 
 
      // set the target output format 
      capturectrl.TargetFormat = TargetFormatType.AVI; 
 
 
      // check whether we can capture video 
      if (capturectrl.IsModeAvailable(CaptureMode.VideoAndAudio)) 
      { 
         capturectrl.FrameRate = 5; 
         // 5 frames per second 
         capturectrl.UseFrameRate = true; 
         capturectrl.TimeLimit = 10; 
         // just 10 seconds of capture time 
         capturectrl.UseTimeLimit = true; 
 
         // subscribe to the compete event 
         capturectrl.Complete += new EventHandler(CaptureCtrl_Complete); 
 
         // start the capture process 
         capturectrl.StartCapture(CaptureMode.VideoAndAudio); 
 
         // 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 (COMException) 
   { 
      _result = false; 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
public void CaptureCtrl_Complete(object sender, EventArgs e) 
{ 
   // set result 
   _result = true; 
}

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