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Standard UnitsLan Manager Interface Unit
Targets: Win32 only
This module provides the interface to the data decompression
functions in LZEXPAND.DLL.
About the Data Decompression Library:
The Microsoft® Windows® operating system includes
a dynamic-link library (DLL) named LZEXPAND.DLL. Typically,
an application calls functions in LZEXPAND.DLL to decompress
data previously compressed by using the Microsoft
File Compression Utility (COMPRESS.EXE).
Data Decompression:
Data compression is an operation that reduces the size of a file
by minimizing redundant data. In a file that contains text,
redundant data can be frequently occurring characters,
such as the space character, or common vowels, such as the letters
e and a; it can also be frequently occurring character strings.
Data compression creates a compressed version of a file by minimizing
this redundant data.
Each type of data-compression algorithm minimizes redundant data
in a unique manner. For example, the Huffman encoding algorithm
assigns a code to characters in a file based on how frequently
those characters occur. Another compression algorithm, called
run-length encoding, generates a two-part value for repeated
characters: the first part specifies the number of times the
character is repeated, and the second part identifies the character.
Another compression algorithm, known as the Lempel-Ziv algorithm,
converts variable-length strings into fixed-length codes that
consume less space than the original strings.
To compress large applications or data files, you can run COMPRESS.EXE
from the command line. COMPRESS.EXE uses the Lempel-Ziv compression
algorithm.
For more info look the "Data Decompression Library" in WIN32.HLP.
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| LM Unit |
Table of Content |
MAPI Unit |
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