LEADTOOLS Multimedia (Leadtools.MediaFoundation assembly)

VideoWindowLeft Property (CaptureCtrl)

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Example 



Gets the left position of the video window.
Syntax
'Declaration
 
Public Overridable ReadOnly Property VideoWindowLeft As Single
'Usage
 
Dim instance As CaptureCtrl
Dim value As Single
 
value = instance.VideoWindowLeft
public virtual float VideoWindowLeft {get;}
public:
virtual property float VideoWindowLeft {
   float get();
}

Property Value

A value representing the left position of the video window.
Remarks
The value is in the units specified by the ScaleMode property.
Example
Copy Code  
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As New CaptureCtrlForm()
' capture control
Private capturectrl As CaptureCtrl

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

Public Sub VideoWindowLeftExample()
    ' reference the capture control
    capturectrl = _form.CaptureCtrl

    ' video window left
    Dim Left As [Single] = 0

    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


        ' set the target output file
        capturectrl.TargetFile = outFile

        If capturectrl.IsModeAvailable(CaptureMode.Video) Then
            ' enable the preview
            capturectrl.Preview = True

            ' get the video window left
            Left = capturectrl.VideoWindowLeft

            ' set the result to what we expect
            _result = (Left <> 0)
        End If
    Catch generatedExceptionName As COMException
        _result = False
    Catch generatedExceptionName As Exception
        _result = False
    End Try
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.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

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

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

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

   // video window left
   Single Left = 0;

   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;


      // set the target output file
      capturectrl.TargetFile = outFile;

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

         // get the video window left
         Left = capturectrl.VideoWindowLeft;

         // set the result to what we expect
         _result = (Left != 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";
}
Requirements

Target Platforms

See Also

Reference

CaptureCtrl Class
CaptureCtrl Members
VideoWindowTop Property
VideoWindowWidth Property
VideoWindowHeight Property

 

 


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