Public Overridable Sub AllocTarget( _
   ByVal size As Integer _
) 

Dim instance As CaptureCtrl
Dim size As Integer
 
instance.AllocTarget(size)

public virtual void AllocTarget( 
   int size
)

public:
virtual void AllocTarget( 
   int size
) 

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

         ' output file names
         Dim outFile As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_AllocTargetExample.avi")

         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 MPEG2 as the video compressor
            capturectrl.VideoCompressors.Mpeg2.Selected = True

            ' set AC3 as the audio compressor
            capturectrl.AudioCompressors.AC3.Selected = True

            ' set the target output file
            capturectrl.TargetFile = outFile

            ' preallocate file to 10 MB
            capturectrl.AllocTarget(10)

            ' set the result
            _result = File.Exists(outFile)

         Catch e1 As Exception
            _result = False
         End Try

         ' we'll loop on the state and pump messages for this example.
         ' but you should not need to if running from a Windows Forms application.
         Do While capturectrl.State = CaptureState.Running
            Application.DoEvents()
         Loop
      End Sub

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media"
End Class

public bool _result = false;
      public CaptureCtrlForm _form = new CaptureCtrlForm();
      string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_AllocTargetExample.avi");
      public void AllocTargetExample()
      {
         // reference the capture control
         CaptureCtrl capturectrl = _form.CaptureCtrl;

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

            // allocate a file
            capturectrl.AllocTarget(1000) ;

            _result = File.Exists(outFile);               
         }
         catch (COMException)
         {
            _result = false;
         }
         catch (Exception)
         {
            _result = false;
         }
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 17\Media";
}