LockModules Method

Summary
Locks all modules of the same 'appId' that were unlocked using UnlockModule.

Note

As of v21 the LEADTOOLS Multimedia toolkit has been updated to use a seamless license mechanism and any new development must use it. The new licensing mechanism uses RasterSupport.SetLicense. For a step-by-step tutorial on a .NET platform, refer to Add References and Set a License.

The UnlockModule mechanism is still supported in v21.


Syntax
C#
VB
C++
public static void LockModules( 
   LockType type, 
   string appId 
) 
Public Shared Sub LockModules( _ 
   ByVal type As LockType, _ 
   ByVal appId As String _ 
)  
public: 
static void LockModules(  
   LockType type, 
   String^ appId 
)  

Parameters

type
One of the LockType enumeration values that specify the level at which the locking operation will be performed. It should be the same value passed to UnlockModule.

appId
If type is set to LockType.Application or LockType.Computer, appId should be the application ID; a unique ID of the calling application. The caller is responsible for uniqueness of this ID. It is recommended to use the full path of the application.

If type is set to LockType.ApplicationPath, appId should be the application full path of the application (the long version, not the short 8.3 version of the path).

This parameter cannot be NULL (empty).

Remarks

You must call LockModules:

Example
C#
VB
using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.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.Multimedia.Common.MultimediaSupport.UnlockModule(pszKey, 
                                                                 Leadtools.Multimedia.Common.LockType.Application, 
                                                                 pszAppId); 
   } 
   catch 
   { 
      return; 
   } 
 
   // [use the multimedia feature here] 
 
   // lock the multimedia feature before exiting the app 
   try 
   { 
      Leadtools.Multimedia.Common.MultimediaSupport.LockModules(Leadtools.Multimedia.Common.LockType.Application, 
                                                                pszAppId); 
   } 
   catch 
   { 
      return; 
   } 
   _result = true; 
} 
Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.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.Multimedia.Common.MultimediaSupport.UnlockModule(pszKey, 
                                                                 Leadtools.Multimedia.Common.LockType.Application, 
                                                                 pszAppId) 
   Catch 
      Exit Sub 
   End Try 
 
   ' [use the multimedia feature here] 
 
   ' lock the multimedia feature before exiting the app 
   Try 
      Leadtools.Multimedia.Common.MultimediaSupport.LockModules(Leadtools.Multimedia.Common.LockType.Application, pszAppId) 
      _result = True 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
Requirements

Target Platforms

Help Version 21.0.2021.7.2
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© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Multimedia Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.