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HasDialog Method

Summary

Indicates whether the specified property's dialog is available.

Syntax

C++

public bool HasDialog( 
   ProcessorDlg Dialog 
)

Public Function HasDialog( _ 
   ByVal Dialog As ProcessorDlg _ 
) As Boolean

public: 
bool HasDialog(  
   ProcessorDlg Dialog 
)

Parameters

Dialog
A ProcessorDlg value that specifies which dialog's availability is being queried.

Return Value

true if the specified property's dialog is available; otherwise, it is false

Remarks

Indicates whether the specified property's dialog is available.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public PlayCtrlForm _form = new PlayCtrlForm(); 
 
public void HasDialogExample() 
{ 
   // reference the play control 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   // input file 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.avi"); 
 
   try 
   { 
      // turn off auto start 
      playctrl.AutoStart = false; 
 
      // set the source file 
      playctrl.SourceFile = inFile; 
 
 
      // get index of lead video Stabilizer transform 
      int nIndex = playctrl.VideoProcessors.IndexOf("{E2B6EDDE-38C5-11D5-91F6-00104BDB8FF9}"); 
 
      // add the lead video Stabilizer transform to the selected video processors 
      playctrl.SelectedVideoProcessors.Add(playctrl.VideoProcessors[nIndex]); 
 
      // The HasDialog method tells us that the object 
      // can display the desired dialog. 
      // check to see if the processor dialog can be displayed 
      if (playctrl.SelectedVideoProcessors[0].HasDialog(ProcessorDlg.Properties)) 
      { 
         // now show it to change some settings 
         playctrl.SelectedVideoProcessors[0].ShowDialog(ProcessorDlg.Properties, _form); 
         _result = true; 
      } 
 
      // start the playback 
      playctrl.Run(); 
 
      // 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. 
      while (playctrl.State == PlayState.Running) 
         Application.DoEvents(); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"; 
}

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As PlayCtrlForm = New PlayCtrlForm() 
 
Public Sub HasDialogExample() 
   ' reference the play control 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
   ' input file 
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "PlayCtrl_Source.avi") 
 
   Try 
      ' turn off auto start 
      playctrl.AutoStart = False 
 
      ' set the source file 
      playctrl.SourceFile = inFile 
 
      ' get index of lead video Stabilizer transform 
      Dim nIndex As Integer = playctrl.VideoProcessors.IndexOf("{E2B6EDDE-38C5-11D5-91F6-00104BDB8FF9}") 
 
      ' add the lead video Stabilizer transform to the selected video processors 
      playctrl.SelectedVideoProcessors.Add(playctrl.VideoProcessors(nIndex)) 
 
      ' The HasDialog method tells us that the object 
      ' can display the desired dialog. 
      ' check to see if the processor dialog can be displayed 
      If playctrl.SelectedVideoProcessors(0).HasDialog(ProcessorDlg.Properties) Then 
         ' now show it to change some settings 
         playctrl.SelectedVideoProcessors(0).ShowDialog(ProcessorDlg.Properties, _form) 
         _result = True 
      End If 
 
      ' start the playback 
      playctrl.Run() 
 
      ' 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 playctrl.State = PlayState.Running 
         Application.DoEvents() 
      Loop 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media" 
End Class

Requirements

Target Platforms

Reference

Processor Class

Processor Members

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Help Version 20.0.2020.4.2

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies