Clear Method

Summary

Removes all Processor items from the collection.

Syntax
C#
VB
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
C#
VB
using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.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; 
 
      // add the Dizzy video processor to the selected video  
      // processors collection 
      selprocs.Add(allProcs.EFXDizzy); 
 
      // 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.Multimedia 
Imports LeadtoolsMultimediaExamples.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 
 
      ' add the Dizzy video processor to the selected video  
      ' processors collection 
      selprocs.Add(allProcs.EFXDizzy) 
 
      ' 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

Help Version 20.0.2019.9.19
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Leadtools.Multimedia Assembly