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VideoWindowHeight Property

Summary

Gets the height of the video window.

Syntax

C++

public virtual float VideoWindowHeight { get; }

Public Overridable ReadOnly Property VideoWindowHeight As Single

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

Property Value

A value representing the video window height.

Remarks

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

Example

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_VideoWindowHeightExample.avi"); 
 
public void VideoWindowHeightExample() 
{ 
   // reference the capture control 
   capturectrl = _form.CaptureCtrl; 
 
   // video window height 
   Single Height = 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 height 
         Height = capturectrl.VideoWindowHeight; 
 
         // set the result to what we expect 
         _result = (Height != 0); 
      } 
   } 
   catch (COMException) 
   { 
      _result = false; 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 19\Media"; 
}

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_VideoWindowHeightExample.avi") 
 
Public Sub VideoWindowHeightExample() 
   ' reference the capture control 
   capturectrl = _form.CaptureCtrl 
 
   ' video window height 
   Dim Height 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 height 
         Height = capturectrl.VideoWindowHeight 
 
         ' set the result to what we expect 
         _result = (Height <> 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 19\Media" 
End Class

Requirements

Target Platforms

Reference

CaptureCtrl Class

CaptureCtrl Members

VideoWindowTop Property

VideoWindowLeft Property

VideoWindowWidth Property

Help Version 19.0.2017.10.27

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies