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Selection Property

Summary

Gets the zero-based index of the currently selected TargetDevice item.

Syntax

C++

public int Selection { get; set; }

Public Property Selection As Integer

public: 
property int Selection { 
   int get(); 
   void set (    int ); 
}

Property Value

The zero-based index of the selected item; otherwise -1 if no item is selected.

Remarks

Gets the zero-based index of the currently selected TargetDevice item. Assignment can raise an error exception. For more information, refer to the Error Codes.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public ConvertCtrlForm _form = new ConvertCtrlForm(); 
 
public void TargetDevicesExample() 
{ 
   string inputName, inputFriendlyName; 
   int selectedCamera; 
 
   // reference the convert control 
   ConvertCtrl convertctrl = _form.ConvertCtrl; 
 
   try 
   { 
      // get the target devices object 
      TargetDevices devices = convertctrl.TargetDevices; 
 
      // select an input by name if possible 
      if (devices["Microsoft DV Camera"] == null) 
         throw new Exception("No MS DV Camera device available!"); 
 
      devices["Microsoft DV Camera"].Selected = true; 
 
      // get the full friendly name of the device  
      string friendlyName = devices["Microsoft DV Camera"].FriendlyName; 
 
      // get the selected index of the currently selected target device 
      // (the MS DV camera above) 
      selectedCamera = devices.Selection; 
 
      // now enumerate all the target devices, 
      // looking for an audio device and select it 
      foreach (TargetDevice td in devices) 
      { 
         // get the inputs properties 
         inputName = td.Name; 
         inputFriendlyName = td.FriendlyName; 
 
         // if we found a target audio device 
         if (inputFriendlyName.Contains("Audio")) 
         { 
            // select it and break 
            td.Selected = true; 
            break; 
         } 
      } 
 
      // set the result to what we expect 
      _result = (selectedCamera != devices.Selection); 
 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As ConvertCtrlForm = New ConvertCtrlForm() 
 
Public Sub TargetDevicesExample() 
   Dim inputName, inputFriendlyName As String 
   Dim selectedCamera As Integer 
 
   ' reference the convert control 
   Dim convertctrl As ConvertCtrl = _form.ConvertCtrl 
 
   Try 
      ' get the target devices object 
      Dim devices As TargetDevices = convertctrl.TargetDevices 
 
      ' select an input by name if possible 
      If devices("Microsoft DV Camera") Is Nothing Then 
         Throw New Exception("No MS DV Camera device available!") 
      End If 
 
      devices("Microsoft DV Camera").Selected = True 
 
      ' get the full friendly name of the device  
      Dim friendlyName As String = devices("Microsoft DV Camera").FriendlyName 
 
      ' get the selected index of the currently selected target device 
      ' (the MS DV camera above) 
      selectedCamera = devices.Selection 
 
      ' now enumerate all the target devices, 
      ' looking for an audio device and select it 
      For Each td As TargetDevice In devices 
         ' get the inputs properties 
         inputName = td.Name 
         inputFriendlyName = td.FriendlyName 
 
         ' if we found a target audio device 
         If inputFriendlyName.Contains("Audio") Then 
            ' select it and break 
            td.Selected = True 
            Exit For 
         End If 
      Next td 
 
      ' set the result to what we expect 
      _result = (selectedCamera <> devices.Selection) 
 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub

Requirements

Target Platforms

Reference

TargetDevices Class

TargetDevices Members

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Help Version 20.0.2020.4.2

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies