SaveSettingsToStream Method (CaptureCtrl)

Saves some or all of the capture object settings to a stream.

Syntax

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public virtual void SaveSettingsToStream( 
   Stream targetStream,
   CaptureSettings flags
)

'Declaration
 
Public Overridable Sub SaveSettingsToStream( _
   ByVal targetStream As Stream, _
   ByVal flags As CaptureSettings _
)

'Usage
 
Dim instance As CaptureCtrl
Dim targetStream As Stream
Dim flags As CaptureSettings
 
instance.SaveSettingsToStream(targetStream, flags)

public virtual void SaveSettingsToStream( 
   Stream targetStream,
   CaptureSettings flags
)

 function Leadtools.Multimedia.CaptureCtrl.SaveSettingsToStream( 
   targetStream ,
   flags 
)

public:
virtual void SaveSettingsToStream( 
   Stream^ targetStream,
   CaptureSettings flags
)

Parameters

targetStream: The stream to which settings will be saved.
flags: The settings flags specifying which settings to save. See the CaptureSettings enumeration for settings options.

Remarks

Saves some or all of the capture object settings to a stream. The capture object settings can be saved to a file by calling SaveSettingsToFile. Saved settings can be loaded using the LoadSettingsFromStream method or the LoadSettingsFromFile method. It may be helpful to call CanSaveObjectSettings before calling the save methods, to make sure the settings can be saved. If either CaptureCtrl.SaveSettingsToFile or CaptureCtrl.SaveSettingsToStream is called for settings that cannot be saved, the save method will fail.

Example

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Public _result As Boolean = False
      Public _form As CaptureCtrlForm = New CaptureCtrlForm()
      Public _capturectrl As CaptureCtrl
      Public _streamSettings As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_ObjectSettingsExample_Stream.xml")
      Public _fileSettings As String = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_ObjectSettingsExample.xml")

      Public Sub ObjectSettingsExample()
         ' reference the play control
         _capturectrl = _form.CaptureCtrl

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

         Try
            Dim pVideoDizzy As Processor = _capturectrl.VideoProcessors.EFXDizzy
            ' set a video processor
            _capturectrl.SelectedVideoProcessors.Add(pVideoDizzy)

            ' save the settings to a file
            If SaveFileSettings() Then
               ' now clear the selected processors again
               _capturectrl.SelectedVideoProcessors.Clear()

               ' check if stream file exists
               If File.Exists(_fileSettings) Then
                  ' load the saved settings from a file
                  ' and check if the processor is selected again
                  LoadFileSettings()

                  ' set the result 
                  _result = _capturectrl.SelectedVideoProcessors.Contains(pVideoDizzy)
               End If
            End If

            ' save the settings to a stream
            If SaveStreamSettings() Then
               ' now clear the selected processors again
               _capturectrl.SelectedVideoProcessors.Clear()

               ' check if stream file exists
               If File.Exists(_streamSettings) Then
                  ' load the saved settings from a stream 
                  ' and check if the processor is selected again
                  LoadStreamSettings()

                  ' set the result 
                  _result = _result And _capturectrl.SelectedVideoProcessors.Contains(pVideoDizzy)
               End If
            End If
         Catch e1 As Exception
            _result = False
         End Try
      End Sub

      Private Sub LoadFileSettings()
         _capturectrl.LoadSettingsFromFile(_fileSettings, CaptureSettings.Processors)
      End Sub

      Private Function SaveFileSettings() As Boolean
         '  check if we can save the processors settings
         If _capturectrl.CanSaveObjectSettings(CaptureSettings.Processors) Then
            _capturectrl.SaveSettingsToFile(_fileSettings, CaptureSettings.Processors)
            Return True
         End If
         Return False
      End Function

      Private Sub LoadStreamSettings()
         Dim settings As Stream = New StreamReader(_streamSettings).BaseStream
         _capturectrl.LoadSettingsFromStream(settings, CaptureSettings.Processors)
         settings.Close()
      End Sub

      Private Function SaveStreamSettings() As Boolean
         '  check if we can save the processors settings
         If _capturectrl.CanSaveObjectSettings(CaptureSettings.Processors) Then
            Dim settings As Stream = New StreamWriter(_streamSettings, False).BaseStream
            _capturectrl.SaveSettingsToStream(settings, CaptureSettings.Processors)
            settings.Close()
            Return True
         End If
         Return False
      End Function

Public NotInheritable Class LEAD_VARS
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
End Class

public bool _result = false;
      public CaptureCtrlForm _form = new CaptureCtrlForm();
      public CaptureCtrl _capturectrl;
      public string _streamSettings =Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_ObjectSettingsExample_Stream.xml");
      public string _fileSettings = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_ObjectSettingsExample.xml");

      public void ObjectSettingsExample()
      {
         // reference the play control
         _capturectrl = _form.CaptureCtrl;

         // output file
         string outFile = Path.Combine(LEAD_VARS.MediaDir,"CaptureCtrl_ObjectSettingsExample.avi");

         try
         {
            Processor pVideoDizzy = _capturectrl.VideoProcessors.EFXDizzy;
            // set a video processor
            _capturectrl.SelectedVideoProcessors.Add(pVideoDizzy);

            // save the settings to a file
            if (SaveFileSettings())
            {
               // now clear the selected processors again
               _capturectrl.SelectedVideoProcessors.Clear();

               // check whether a stream file exists
               if (File.Exists(_fileSettings))
               {
                  // load the saved settings from a file
                  // and check whether the processor is selected again
                  LoadFileSettings();

                  // set the result 
                  _result = _capturectrl.SelectedVideoProcessors.Contains(pVideoDizzy);
               }
            }

            // save the settings to a stream
            if (SaveStreamSettings())
            {
               // now clear the selected processors again
               _capturectrl.SelectedVideoProcessors.Clear();

               // check whether a stream file exists
               if (File.Exists(_streamSettings))
               {
                  // load the saved settings from a stream 
                  // and check whether the processor is selected again
                  LoadStreamSettings();

                  // set the result 
                  _result &= _capturectrl.SelectedVideoProcessors.Contains(pVideoDizzy);
               }
            }
         }
         catch (Exception)
         {
            _result = false;
         }
      }

      private void LoadFileSettings()
      {
         _capturectrl.LoadSettingsFromFile(_fileSettings, CaptureSettings.Processors);
      }

      private bool SaveFileSettings()
      {
         //  check whether we can save the processors settings
         if (_capturectrl.CanSaveObjectSettings(CaptureSettings.Processors))
         {
            _capturectrl.SaveSettingsToFile(_fileSettings, CaptureSettings.Processors);
            return true;
         }
         return false;
      }

      private void LoadStreamSettings()
      {
         Stream settings = new StreamReader(_streamSettings).BaseStream;
         _capturectrl.LoadSettingsFromStream(settings, CaptureSettings.Processors);
         settings.Close();
      }

      private bool SaveStreamSettings()
      {
         //  check whether we can save the processors settings
         if (_capturectrl.CanSaveObjectSettings(CaptureSettings.Processors))
         {
            Stream settings = new StreamWriter(_streamSettings, false).BaseStream;
            _capturectrl.SaveSettingsToStream(settings, CaptureSettings.Processors);
            settings.Close();
            return true;
         }
         return false;
      }

static class LEAD_VARS
{
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 175\Media";
}

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

CaptureCtrl Class
CaptureCtrl Members