ScaleMode Property (CaptureCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable Property ScaleMode As ScaleMode

'Usage
 
Dim instance As CaptureCtrl
Dim value As ScaleMode
 
instance.ScaleMode = value
 
value = instance.ScaleMode

public virtual ScaleMode ScaleMode {get; set;}

public:
virtual property ScaleMode ScaleMode {
   ScaleMode get();
   void set (    ScaleMode value);
}

Property Value

A ScaleMode value representing the unit of measure.

The value should be one of the ScaleMode enumeration values. Assignment can raise an error exception.

For more information, refer to the Error Codes.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public _capturectrl As CaptureCtrl
Public Sub ScaleModeExample()
   ' reference the capture control
   _capturectrl = _form.CaptureCtrl

   ' output file
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_ScaleModeExample.avi")

   Try
      ' set the source video device, select using your device name here
      If _capturectrl.VideoDevices("USB") Is Nothing Then
         Throw New Exception("No USB video device available")
      End If

      _capturectrl.VideoDevices("USB").Selected = True

      ' select a video compressor
      _capturectrl.VideoCompressors.Mpeg4.Selected = True

      ' set the target output file
      _capturectrl.TargetFile = outFile

      If _capturectrl.IsModeAvailable(CaptureMode.Video) Then

         ' subscribe to the started event
         AddHandler _capturectrl.Started, AddressOf CaptureCtrl_Started

         ' set scale mode
         _capturectrl.ScaleMode = ScaleMode.Pixels

         ' start capture
         _capturectrl.StartCapture(CaptureMode.Video)

         ' get the scale mode
         Dim Mode As ScaleMode = _capturectrl.ScaleMode

         ' set the result to what we expect
         _result = (Mode = ScaleMode.Pixels)
      End If

   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 _capturectrl.State = CaptureState.Running
      Application.DoEvents()
   Loop
End Sub

Private Sub CaptureCtrl_Started(ByVal sender As Object, ByVal e As EventArgs)
   ' stop the capture (we don't need a complete capture for this example)
   _capturectrl.StopCapture()
End Sub

Public NotInheritable Class LEAD_VARS
Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media"
End Class

using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
// capture control
CaptureCtrl capturectrl;

// output file
string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_ScaleModeExample.avi");

public void ScaleModeExample()
{
   // reference the capture control
   capturectrl = _form.CaptureCtrl;

   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 output file
      capturectrl.TargetFile = outFile;

      // subscribe to the started event
      capturectrl.Started += new System.EventHandler(CaptureCtrl_Started);

      // set scale mode
      capturectrl.ScaleMode = ScaleMode.Pixels;

      // start capture
      capturectrl.StartCapture(CaptureMode.Video);

      // get the scale mode
      ScaleMode Mode = capturectrl.ScaleMode;

      // set the result to what we expect
      _result = (Mode == ScaleMode.Pixels);
   }
   catch (COMException)
   {
      _result = false;
   }
   catch (Exception)
   {
      _result = false;
   }
}

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:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media";
}

Target Platforms

Reference

CaptureCtrl Class
CaptureCtrl Members