Installing Applications On The Ck31 - Intermec CK31 User Manual

Chapter 3 — Developing and Installing Applications
The resource kit is part of the Intermec Developer's Library
(IDL), which is available from the Intermec web site at
www.intermec.com/idl.

Installing Applications on the CK31

There are several ways you can install applications on the CK31:
• You can package your application as a cabinet (.cab) file.
• If you have a simple application, you may only need to deliver
the .exe file.
• You can copy a directory structure that contains the
application, supporting files, DLLs, images, and data files.
Intermec recommends using CAB files to install your
applications. The CK31 uses standard Windows CE CAB files
and will install third-party CAB files. Before the CK31 executes
a CAB file, it marks the file as read-only so that it will not be
deleted after installation. After the CAB file is extracted, the
CK31 automatically saves any changes you have made to the
registry or file system so that they will persist through a cold
boot. This process means that you will not have to reinstall your
applications when your battery goes dead or you perform a cold
boot.
You can have your CAB files place your application in any of
these memory locations on the CK31:
• The RAM based file store (anywhere in the root \ directory)
• The Flash File System (the CK_FFS folder)
• On the SD card (SDMMC folder)
Unless your application and additional data files are very large,
you can place them in the RAM of the unit. They will
automatically be backed up to the Flash File System
(\CK_FFS\Persistent Copy folder). These files will be preserved
through a cold boot, or a complete battery drain and
accompanying cold boot.
If you have an SD card inserted in your CK31, it appears as the
SDMMC Disk folder. This folder is the recommended location
for placing your application install files.
68 CK31 Handheld Computer User's Manual