IltmmMemory::LockBuffer

Summary

Locks the object's buffer to prevent access by any thread other than the calling thread.

Syntax

#include "ltmm.h"

Language Syntax
C HRESULT IltmmMemory_LockBuffer(pMem, pVal)
C++ HRESULT LockBuffer(pVal)

Parameters

IltmmMemory *pMem

Pointer to an IltmmMemory interface.

VARIANT *pVal

Pointer to a variable to be updated with a VARIANT containing a SAFEARRAY reference to the locked buffer.

Returns

Value Meaning
S_OK The function was successful.
<> S_OK An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

This function obtains a pointer to the buffer in the form of a SAFEARRAY embedded in a VARIANT.

Call IltmmMemory::Unlock to unlock the buffer when it is no longer being used.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Functions

Topics

Example

Language Example
C Use ltmmMemory for Memory Conversion
C++ Use ltmmMemory for Memory Conversion
Help Version 23.0.2024.2.29
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Multimedia C API Help

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.