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HasDialog Method

Summary

Indicates whether the specified property's dialog is available.

Syntax

C#
VB
C++
public bool HasDialog( 
   TargetFormatDlg Dialog 
) 
Public Function HasDialog( _ 
   ByVal Dialog As Leadtools.Mediafoundation.TargetFormatDlg _ 
) As Boolean 

Parameters

Dialog
A TargetFormatDlg 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

C#
VB
using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void HasDialogExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   try 
   { 
      // set a video device first, you should use your video device name here 
      if (capturectrl.VideoDevices["Analog"] == null) 
         throw new Exception("No Analog audio device available"); 
 
      capturectrl.VideoDevices["Analog"].Selected = true; 
 
      // select the WMV target format 
      TargetFormat tf = capturectrl.TargetFormats[TargetFormatType.WMV]; 
      tf.Selected = true; 
 
      // The HasDialog method tells us that the control 
      // can display the desired settings dialog. 
      // check to see if the Profile dialog is available 
      if (tf.HasDialog(TargetFormatDlg.Profile)) 
      { 
         // show the dialog 
         tf.ShowDialog(TargetFormatDlg.Profile, _form); 
 
         // set the result 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub HasDialogExample() 
   ' reference the capture control 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
   Try 
      ' set a video device first, you should use your video device name here 
      If capturectrl.VideoDevices("Analog") Is Nothing Then 
         Throw New Exception("No Analog audio device available") 
      End If 
 
      capturectrl.VideoDevices("Analog").Selected = True 
 
      ' select WMV target format 
      Dim tf As TargetFormat = capturectrl.TargetFormats(TargetFormatType.WMV) 
      tf.Selected = True 
 
      ' The HasDialog method tells us that the control 
      ' can display the desired settings dialog. 
      ' check to see if the Profile dialog is available 
      If tf.HasDialog(TargetFormatDlg.Profile) Then 
         ' show the dialog 
         tf.ShowDialog(TargetFormatDlg.Profile, _form) 
 
         ' set the result 
         _result = True 
      End If 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 

Requirements

Target Platforms

Help Version 19.0.2017.10.18
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Leadtools.MediaFoundation Assembly