VideoWindowTop Property (CaptureCtrl)

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overridable ReadOnly Property VideoWindowTop As Single

'Usage
 
Dim instance As CaptureCtrl
Dim value As Single
 
value = instance.VideoWindowTop

public virtual float VideoWindowTop {get;}

public:
virtual property float VideoWindowTop {
   float get();
}

Property Value

A value representing the top position of the video window.

The value is in the units specified by the ScaleMode property.

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 VideoWindowTopExample()
   ' reference the capture control
   _capturectrl = _form.CaptureCtrl

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

   ' video window top
   Dim Top As Single

   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
         ' enable the preview
         _capturectrl.Preview = True

         ' get the video window top
         Top = _capturectrl.VideoWindowTop

         ' set the result to what we expect
         _result = (Top > 0)

      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

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_VideoWindowTopExample.avi");

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

   // video window top
   Single Top = 0;

   try
   {
       // set the source video device. use your device's 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;

      if (capturectrl.IsModeAvailable(CaptureMode.Video))
      {
         // enable the preview
         capturectrl.Preview = true;

         // get the video window top
         Top = capturectrl.VideoWindowTop;

         // set the result to what we expect
         _result = (Top != 0);
      }
   }
   catch (COMException)
   {
      _result = false;
   }
   catch (Exception)
   {
      _result = false;
   }
}

static class LEAD_VARS
{
public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 18\Media";
}

Target Platforms

Reference

CaptureCtrl Class
CaptureCtrl Members
VideoWindowLeft Property
VideoWindowWidth Property
VideoWindowHeight Property