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ShowDialog Method

Summary

Displays the specified property's dialog.

Syntax

C#
VB
C++
public void ShowDialog( 
   TargetFormatDlg Dialog, 
   IWin32Window hWnd 
) 
Public Sub ShowDialog( _ 
   ByVal Dialog As Leadtools.Mediafoundation.TargetFormatDlg, _ 
   ByVal hWnd As IWin32Window _ 
)  
public: 
void ShowDialog(  
   Leadtools.Mediafoundation.TargetFormatDlg Dialog, 
   IWin32Window^ hWnd 
)  

Parameters

Dialog
A TargetFormatDlg enumeration value that specifies which dialog to show.

hWnd
Value that specifies the dialog owner's window handle.

Remarks

Displays the specified property's dialog. If the method fails, an error is raised. For more information, refer to the Error Codes.

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 19.0.2017.10.19
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Leadtools.MediaFoundation Assembly