LockModules Method

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public static void LockModules( 
   LockType type,
   string appId
)

'Declaration
 
Public Shared Sub LockModules( _
   ByVal type As LockType, _
   ByVal appId As String _
)

'Usage
 
Dim type As LockType
Dim appId As String
 
MultimediaSupport.LockModules(type, appId)

public static void LockModules( 
   LockType type,
   string appId
)

 function Leadtools.Multimedia.Common.MultimediaSupport.LockModules( 
   type ,
   appId 
)

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).

You must call LockModules:

When the application terminates, if unlocking was performed at the application level using LockType.Application.
When uninstalling the application, if unlocking was performed at the computer level using LockType.Computer or LockType.ApplicationPath.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

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

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;
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

MultimediaSupport Class
MultimediaSupport Members