In This Topic ▼

SetVideoWindowPos Method

Summary

Sets the position and size of the video window.

Syntax

C++

public virtual void SetVideoWindowPos( 
   float left, 
   float top, 
   float width, 
   float height 
)

Public Overridable Sub SetVideoWindowPos( _ 
   ByVal left As Single, _ 
   ByVal top As Single, _ 
   ByVal width As Single, _ 
   ByVal height As Single _ 
)

public: 
virtual void SetVideoWindowPos(  
   float left, 
   float top, 
   float width, 
   float height 
)

Parameters

left
X-coordinate of the origin of the video window in pixels with respect to the screen.

top
Y-coordinate of the origin of the video window in pixels with respect to the screen.

width
Video window width in pixels

height
Video window height in pixels

Remarks

Sets the position and size of the video window.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
public CaptureCtrl _capturectrl; 
 
public void SetVideoWindowPosExample() 
{ 
   // reference the capture control 
   _capturectrl = _form.CaptureCtrl; 
 
   // output file 
   string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_SetVideoWindowPosExample.avi"); 
 
   try 
   { 
      // select a video capture device 
      if (_capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      _capturectrl.VideoDevices["USB"].Selected = true; 
 
      // set a video compressor for the capture file 
      _capturectrl.VideoCompressors.Mpeg4.Selected = true; 
 
      // set the preview on 
      _capturectrl.Preview = true; 
 
      // set start event handler 
      _capturectrl.Started += new EventHandler(CaptureCtrl_Started); 
 
      // set the video window position 
      _capturectrl.SetVideoWindowPos(10, 10, 50, 50); 
 
      // set the target output 
      _capturectrl.TargetFile = outFile; 
 
      // start the capture 
      _capturectrl.StartCapture(CaptureMode.Video); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
void CaptureCtrl_Started(object sender, EventArgs e) 
{ 
   // check the current position and set the result to what we expect 
   _result = (_capturectrl.VideoWindowTop == 10 && _capturectrl.VideoWindowLeft == 10 
               && _capturectrl.VideoWindowWidth == 50 && _capturectrl.VideoWindowWidth == 50); 
 
   // stop the capture 
   _capturectrl.StopCapture(); 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"; 
}

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 SetVideoWindowPosExample() 
   ' reference the capture control 
   _capturectrl = _form.CaptureCtrl 
 
   ' output file 
   Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_SetVideoWindowPosExample.avi") 
 
   Try 
      ' select a video capture device 
      If _capturectrl.VideoDevices("USB") Is Nothing Then 
         Throw New Exception("No USB video device available") 
      End If 
 
      _capturectrl.VideoDevices("USB").Selected = True 
 
      ' set a video compressor for the capture file 
      _capturectrl.VideoCompressors.Mpeg4.Selected = True 
 
      ' set the preview on 
      _capturectrl.Preview = True 
 
      ' set start event handler 
      AddHandler _capturectrl.Started, AddressOf CaptureCtrl_Started 
 
      ' set the video window position 
      _capturectrl.SetVideoWindowPos(10, 10, 50, 50) 
 
      ' set the target output 
      _capturectrl.TargetFile = outFile 
 
      ' start the capture 
      _capturectrl.StartCapture(CaptureMode.Video) 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
 
Private Sub CaptureCtrl_Started(ByVal sender As Object, ByVal e As EventArgs) 
   ' check the current position and set the result to what we expect 
   _result = (_capturectrl.VideoWindowTop = 10 AndAlso _capturectrl.VideoWindowLeft = 10 _ 
              AndAlso _capturectrl.VideoWindowWidth = 50 _ 
              AndAlso _capturectrl.VideoWindowWidth = 50) 
 
   ' stop the capture 
   _capturectrl.StopCapture() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media" 
End Class

Requirements

Target Platforms

Reference

CaptureCtrl Class

CaptureCtrl Members

Download our FREE evaluation

Help Version 20.0.2020.4.2

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies