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ScaleMode Property

Summary

Specifies the unit of measure for the control.

Syntax

C#
VB
C++
public virtual ScaleMode ScaleMode { get; set; } 
Public Overridable Property ScaleMode As Leadtools.Mediafoundation.ScaleMode 

Property Value

A ScaleMode value representing the unit of measure.

Remarks

The value should be one of the ScaleMode enumeration values. Assignment can raise an error exception. For more information, refer to the Error Codes.

Example

C#
VB
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_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; 
 
 
      // 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 don't need a complete capture for this example) 
   capturectrl.StopCapture(); 
} 
 
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_ScaleModeExample.avi") 
 
Public Sub ScaleModeExample() 
   ' reference the capture control 
   capturectrl = _form.CaptureCtrl 
 
   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 
 
      ' 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) 
   Catch generatedExceptionName As COMException 
      _result = False 
   Catch generatedExceptionName As Exception 
      _result = False 
   End Try 
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 19\Media" 
End Class 

Requirements

Target Platforms

Help Version 19.0.2017.10.19
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Leadtools.MediaFoundation Assembly