InstallShield 2012 Spring Express Edition User Guide

Updated File
Table 24-78: Settings in the Updated File Area
Setting Description
Specify the latest version of your
file
Original File Information
The Original File Information area provides information about the original file in the original
installation.
Chapter 24: View Reference
QuickPatch Projects
If you are modifying a file in the original installation, specify the latest version of
the file that you want to be installed on the target system when the patch is
applied.
Overwrite Any Existing File If you want to include the selected file in your patch as a whole file, rather than
only the byte-level file differences of the file, you may want to consider
selecting this check box. If you do so, InstallShield configures your patch so
that Windows Installer ignores any actual version number of the selected file,
and instead considers it be version 1.0.0.0 when it is determining whether to
update the target system’s file with the version in your QuickPatch package, or
to leave the file as is.
Selecting this check box for an unversioned file may be helpful to ensure that
the file on the target system is always overwritten with the newer equivalent
unversioned file in your QuickPatch package. According to Windows Installer
file overwrite rules, a file of any version is maintained over an unversioned file.
Therefore, if you select this check box, Windows Installer updates the
unversioned file with the one in the QuickPatch package because it considers
the file in the QuickPatch to be a versioned file.
Important: According to Windows Installer file overwrite rules, the file with the
highest version is maintained, even if the file already on the target system has a
higher version than the one being installed. Therefore, if the file on the target
system is a versioned file, you may want to avoid selecting this check box,
since in some scenarios it could lead to the file on the target system not being
updated. For example, if the file on the target system is version 1.1.0.0, the file
in your QuickPatch project is version 2.0.0.0, and you select this check box,
the file on the target system is not updated at run time. This occurs because
even though the actual version number of the file in the QuickPatch package is
newer than the one on the target system, Windows Installer considers the file in
the QuickPatch to be 1.0.0.0, which would make it older than the file on the
target system.
Extract COM Information If the file is a COM server and you want InstallShield to extract COM information
from the file when the patch is built, select this check box. This check box is
selected by default for patch files that contain COM information in the Class or
TypeLib tables in the base .msi package.
Note: When you specify an existing file that you want to patch, InstallShield
automatically detects if the file is self-registering. If the original file was selfregistering,
the file in the patch is also set to self-register.
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