In This Topic ▼

Clear Method

Summary

Removes all Processor items from the collection.

Syntax

C++

public void Clear()

Public Sub Clear()

public: 
void Clear();

Remarks

Removes a Processor item from the collection. If the method fails, an error is raised. For more information, refer to the Error Codes.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public PlayCtrlForm _form = new PlayCtrlForm(); 
 
public void ClearExample() 
{ 
   // reference the play control 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   try 
   { 
      // get the available video processors 
      VideoProcessors allProcs = playctrl.VideoProcessors; 
 
      // get the selected video processors 
      VideoProcessors selprocs = playctrl.SelectedVideoProcessors; 
 
      // get index of lead video Stabilizer transform 
      int nIndex = allProcs.IndexOf("{E2B6EDDE-38C5-11D5-91F6-00104BDB8FF9}"); 
 
      // add the lead video Stabilizer transform to the selected video processors 
      selprocs.Add(allProcs[nIndex]); 
 
      // get the current count of selected processors 
      int n = selprocs.Count; 
 
      // clear the collection 
      selprocs.Clear(); 
 
      // get the count again 
      int m = selprocs.Count; 
 
      // set the result to what we expect 
      _result = (n > m && m == 0); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As PlayCtrlForm = New PlayCtrlForm() 
 
Public Sub ClearExample() 
   ' reference the play control 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
   Try 
      ' get the available video processors 
      Dim allProcs As VideoProcessors = playctrl.VideoProcessors 
 
      ' get the selected video processors 
      Dim selprocs As VideoProcessors = playctrl.SelectedVideoProcessors 
 
      ' get index of lead video Stabilizer transform 
      Dim nIndex As Integer = allProcs.IndexOf("{E2B6EDDE-38C5-11D5-91F6-00104BDB8FF9}") 
 
      ' add the lead video Stabilizer transform to the selected video processors 
      selprocs.Add(allProcs(nIndex)) 
 
      ' get the current count of selected processors 
      Dim n As Integer = selprocs.Count 
 
      ' clear the collection 
      selprocs.Clear() 
 
      ' get the count again 
      Dim m As Integer = selprocs.Count 
 
      ' set the result to what we expect 
      _result = (n > m AndAlso m = 0) 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub

Requirements

Target Platforms

Reference

Processors Class

Processors Members

Download our FREE evaluation

Help Version 20.0.2020.4.2

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies