Important:
This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.
A version of this page is also available for
4/8/2010

This function frees a task-allocated BSTRstring from memory.

Syntax 

STDAPI FreeBSTR(
  BSTR* 
pstr
);

Parameters

pstr

Address of the BSTRto free.

Return Value

Returns S_OK if successful or S_FALSE if pstris null.

Remarks

Memory is allocated for passing between objects across interfaces by calling CoTaskMemAlloc.

Memory is freed by calling CoTaskMemFree.

You can allocate, pass, and free memory safely between objects created in different programming languages by using a central memory allocator.

Requirements

Windows Embedded CE Windows CE 2.12 and later
Windows Mobile Windows Mobile Version 5.0 and later
Note Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements
For more information, see Setting Up the Build Environment,
Version 2.12 requires DXPAK 1.0 or later

See Also

Reference

BSTR Functions