LZClose function

Closes a file that was opened by using the LZOpenFile function.


void LZClose(
  INT hFile



A handle to the file to be closed.

Return Value

This function does not return a value.


The handle identifying the file must be retrieved by calling the LZOpenFile function. If the handle is retrieved by calling the CreateFile or OpenFile function, an error occurs.

If the file has been compressed by the Lempel-Ziv algorithm and opened by using LZOpenFile, LZClose frees any global heap space that was allocated to expand the file.

In Windows 8 and Windows Server 2012, this function is supported by the following technologies.

Technology Supported
Server Message Block (SMB) 3.0 protocol Yes
SMB 3.0 Transparent Failover (TFO) Yes
SMB 3.0 with Scale-out File Shares (SO) Yes
Cluster Shared Volume File System (CsvFS) Yes
Resilient File System (ReFS) Yes

CsvFs will do redirected IO for compressed files.


Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header lzexpand.h (include Windows.h)
Library Lz32.lib
DLL Lz32.dll

See Also


File Compression and Decompression

File Management Functions