LEADTOOLS Multimedia (Leadtools.MediaFoundation assembly)

VideoCaptureSizes Property

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Example 



Gets the video capture sizes collection object.
Syntax
'Declaration
 
Public Overridable ReadOnly Property VideoCaptureSizes As CaptureSizes
'Usage
 
Dim instance As CaptureCtrl
Dim value As CaptureSizes
 
value = instance.VideoCaptureSizes
public virtual CaptureSizes VideoCaptureSizes {get;}
public:
virtual property CaptureSizes^ VideoCaptureSizes {
   CaptureSizes^ get();
}

Property Value

A CaptureSizes collection containing video capture sizes.
Remarks
The CaptureSizes object used to enumerate and select CaptureSize objects that contain common video capture sizes.
Example
Copy Code  
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub CaptureSizesExample()
   ' reference the capture control
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

   Try
      ' select a USB video device, use 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

      ' reference the capture size collection
      Dim sizes As CaptureSizes = capturectrl.VideoCaptureSizes

      ' get the current selection
      Dim n As Integer = sizes.Selection

      ' loop through all the capture sizes
      For Each cs As CaptureSize In sizes
         ' check some criteria and select one
         If cs.Width = 640 AndAlso cs.Height = 480 Then
            ' select it and break
            cs.Selected = True
            Exit For
         End If
      Next cs

      ' set the result to what we expect
      _result = (n <> sizes.Selection)
   Catch e1 As Exception
      _result = False
   End Try
End Sub
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CaptureSizesExample()
{
   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   try
   {
      // select a USB video device, use your device name here
      if (capturectrl.VideoDevices["USB"] == null)
         throw new Exception("No USB video device available");

      capturectrl.VideoDevices["USB"].Selected = true;

      // reference the capture size collection
      CaptureSizes sizes = capturectrl.VideoCaptureSizes;

      // get the current selection
      int n = sizes.Selection;

      // loop through all the capture sizes
      foreach (CaptureSize cs in sizes)
      {
         // check some criteria and select one
         if (cs.Width == 640 && cs.Height == 480)
         {
            // select it and break
            cs.Selected = true;
            break;
         }
      }

      // set the result to what we expect
      _result = (n != sizes.Selection);
   }
   catch (Exception)
   {
      _result = false;
   }
}
Requirements

Target Platforms

See Also

Reference

CaptureCtrl Class
CaptureCtrl Members

 

 


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