#include "ltmm.h"

C Syntax

HRESULT IltmmSupportManager_IsSupportLocked(pSupportManager, Support, pVal)

C++ Syntax

HRESULT IsSupportLocked(Support, pVal)

IltmmSupportManager * pSupportManager;

pointer to an interface

long Support;

support type


pointer to a variable

Indicates whether support for converting the DVD format to other formats is locked.

Parameter Description
pSupportManager Pointer to the IltmmSupportManager interface.
Support The unlock support type. Possible values are:
  Value Meaning
  L_SUPPORT_CONVERTFROMDVD Support for converting the DVD format to other formats.
pVal Pointer to a variable to be updated with a value that indicates whether the support for converting the DVD format to other formats is locked. Possible values are:
  Value Meaning
  VARIANT_TRUE The feature is locked. This is the default value.
  VARIANT_FALSE The feature is not locked.



The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.


Use the IltmmSupportManager::UnlockSupport function to unlock support for DVD conversion. Use the IltmmSupportManager::IsSupportLocked function to determine whether support for DVD conversion is unlocked. During conversion, the Convert object checks whether the ltmmSupportManager object is loaded and whether the DVD conversion capability is unlocked.

Required DLLs and Libraries


For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.


Win32, x64

See Also




Multimedia Function Group


For a C example, refer to IltmmSupportManager::UnlockSupport.

For a C++ example, refer to IltmmSupportManager::UnlockSupport.

Help Version 21.0.2021.4.7
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Multimedia C API Help