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MultimediaSupport Class

Summary

Unlocks the Multimedia features, filters, codecs and objects.

Syntax

C++

public static class MultimediaSupport

Public MustInherit NotInheritable Class MultimediaSupport

public ref class MultimediaSupport abstract sealed

Remarks

This is a static class, so it does not need to be created. This class is internally calling the DSKERNEL2.DLL ILMDSKernel2 interface. So you can either call the methods in this class or use the ILMDSKernel2 interface directly.

A typical use is to call UnlockModule when the application starts and LockModules at before the application exits.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
			public bool _result = false; 
 
         public void MultimediaSupportExample() 
         { 
            // pszKey is a string containing the serial number. It is defined like this: 
            // string pszKey = "MySerial"; 
            string pszAppId = "My Test Application"; 
 
            try 
            { 
               // unlock the multimedia feature 
               Leadtools.MediaFoundation.Common.MultimediaSupport.UnlockModule(pszKey, 
                                                                          Leadtools.MediaFoundation.Common.LockType.Application, 
                                                                          pszAppId); 
            } 
            catch 
            { 
               return; 
            } 
 
            // [use the multimedia feature here] 
 
            // lock the multimedia feature before exiting the app 
            try 
            { 
               Leadtools.MediaFoundation.Common.MultimediaSupport.LockModules(Leadtools.MediaFoundation.Common.LockType.Application, 
                                                                         pszAppId); 
            } 
            catch 
            { 
               return; 
            } 
            _result = true; 
         }

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
 
Public Sub MultimediaSupportExample() 
   ' pszKey is a string containing the serial number. It is defined like this: 
   ' Private pszKey As String = "MyString" 
   Dim pszAppId As String = "My Test Application" 
 
   Try 
      ' unlock the multimedia feature 
      Leadtools.MediaFoundation.Common.MultimediaSupport.UnlockModule(pszKey, 
                                                                 Leadtools.MediaFoundation.Common.LockType.Application, 
                                                                 pszAppId) 
   Catch 
      Exit Sub 
   End Try 
 
   ' [use the multimedia feature here] 
 
   ' lock the multimedia feature before exiting the app 
   Try 
      Leadtools.MediaFoundation.Common.MultimediaSupport.LockModules(Leadtools.MediaFoundation.Common.LockType.Application, pszAppId) 
      _result = True 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub