RSP Software Bzip2 Compressor

Last update 08/05/2008

RSP Bzip2 Compressor OCX 2.0.1
Release date (08/05/2008 13:12)

ActiveX OCX to compress files in the Bzip2 and Bzip3 format

What is new in version 2.0.1 (08/05/2008 13:12) : Windows Vista compliant , fixed a few small bugs , requires rspbzip2_201.dll in the same path of the ocx

What is new in version 2.0.0 (Thu Nov 15 11:38:26 2007) : Added the new Bzip3 format, the new Bzip3 format can compress files up to 2^63 or 9.223.372.036 gigabytes and has also MD5 as the integrity check , also stores attributes and file time , the Bzip3 mode can be used with the functions CompressBzip3 and DecompressBzip3 , use the old Bzip2 mode only if you really need Bzip2 compatibility , the old Bzip2 mode has a file size limit of 2 GB , notice also that a Bzip3 file is not a Bzip2 and vice-versa , both formats has different headers , the Bzip2 header is "BZh" and the Bzip3 header is "RSPB", minor bugs fixed

What is new in version 1.2.0 (01/Feb/2004 17:44) Improvement in the speed execution up to 20 percent faster than older versions , this improvement is the result of new Intel and AMD specific optimizations added to the bzip2 engine, added new CPU detection code , modified several internal functions for reliability , added more error handlings , fixed minor bugs , the upgrade is highly recommended

What is new in version 1.1.0 (14/12/2003) Fixed bug in the ResumeCompress , PauseCompress and CancelCompress functions that will show an aboutbox when the first function called are any of these 3 functions , fixed a bug in the selection
of the compression level that will cause the control to use only the level 9 , minor bugs fixed

Features

- Ability to compress and decompress in the Bzip2 or Bzip3 format

- When Bzip3 mode is used the file size limit is 2^63 bytes or 9.223.372.036 gigabytes and save attributes and file time

- The control can pause , resume and cancel the compression and decompression execution

- The compression code is loaded dinamically in the process of the software using the control

- The control can provide progress information about the compression and decompression functions

- The code execution is optimized for speed , but the original Bzip2 compression format is really slow to execute , future versions may have a faster implementation of the Bzip2 compression format

Install

- To install the control just execute setup.exe and follow the instructions
- To uninstall the control , search for the package in the add/remove applications in the control panel , and select remove , it will remove the control from the system

- If the package don't have an installer then just execute register.exe as admin ( if Windows Vista ) and open the ocx in your VB environment

Operating System Compliance

Windows 98 , Windows Millenium , Windows NT 4.0(sp6a) , Windows 2000 , Windows XP , Windows Vista

Documentation

Documentation of the RSP Bzip2 Compressor OCX 2.0.0 Will be available soon

Documentation of the RSP Bzip2 Compressor OCX 1.2.0

Documentation of the RSP Bzip2 Compressor OCX 1.0.0

Download

All our software is also available to download from Winsite , click here to access our Winsite page