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Description
The ActivePatch PatchFile control allows you to
create and apply individual patch files on the local system.
Reference
File Name
APATCH.OCX
Object Type
PatchFile
Remarks
The PatchFile control can be used in an application to create
individual patch files, as well as apply those patch files on a
local system. Unlike simple data compression, creating a patch
involves analyzing the differences between two files at the byte
level, and generating a set of instructions that will convert one
file into another. Typically, a patch is created to update an older
version of a file with a newer version. Because only the
differences between the file are stored in the patch, the
difference in size can be significant, in some cases achieving a
90% or better compression ratio.
Requirements
The PatchFile control is designed for the 32-bit Windows
platform, and is supported on Windows 95, Windows 98, Windows ME,
Windows NT 4.0, Windows 2000, Windows XP and Windows Vista. For
Windows 95/98 and Windows ME it is recommended that the system have
at least 16 MB of physical memory. For Windows NT 4.0, it is
recommended that the system have at least 32 MB of physical memory,
and have at least Service Pack 5 (SP5) installed. For Windows 2000,
it is recommended that the system have at least 64 MB of physical
memory.
Distribution
When you redistribute your application that uses the control, it
is recommended that you install the control in the Windows system
directory. The ActivePatch control does not have any dependencies
on additional libraries except for standard system libraries which
are included with the operating system.
ActiveX components must be registered during the installation
process or by using a component registration utility. The
registration process writes specific information into the system
registry so that an application can load and use the control. If an
application attempts to use an unregistered control, it will fail
to execute and return an error.
Copyright
Copyright 2009 Catalyst
Development Corporation. All rights reserved.
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