LXE VX6, Справочное руководство

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94 VX6 Utilities
VX6 Reference Guide E-EQ-VX6RG-A
VX6 Utilities
The following files are pre-loaded by LXE.
LAUNCH.EXE
Launch works in coordination with registry settings to allow drivers or applications to be loaded
automatically into DRAM at system startup. Registry settings control what gets launched; see the
App Note for information on these settings. For examples, you can look at the registry key
HKEY_LOCAL_MACHINE \ Software \ LXE \ Persist
Launch will execute .CAB files, .BAT files, or .EXE files.
App Note
All applications to be installed into persistent memory must be in the form of Windows CE CAB
files. These CAB files exist as separate files from the main installation image, and are copied to
the CE device using ActiveSync, or using a Compact Flash ATA card. The CAB files are copied
from ATA or using ActiveSync Explore into the folder System, which is the persistent storage
virtual drive. Then, information is added to the registry, if desired, to make the CAB file auto-
launch at startup.
The registry information needed is under the key HKEY_LOCAL_MACHINE \ Software \ LXE \
Persist, as follows. The main subkey is any text, and is a description of the file. Then 3 mandatory
values are added:
FileName is the name of the CAB file, with the path (usually \System).
Installed is a DWORD value of 0 , which changes to 1 once auto-launch installs the file.
FileCheck is the name of a file to look for to determine if the CAB file is installed. This
will be the name of one of the files (with path) installed by the CAB file. Since the CAB
file installs into DRAM, when memory is lost this file is lost, and the CAB file must be
reinstalled.
There are three optional fields that may be added:
Order is used to force a sequence of events. Order=0 is first, and Order=99 is last.
Two items which have the same order will be installed in the same pass, but not in a
predictable sequence.
Delay is used to add a delay after the item is loaded, before the next is loaded. The delay
is given in seconds, and defaults to 0 if not specified. If the install fails (or the file to be
installed is not found), the delay does not occur.
PCMCIA is used to indicate that the file (usually a CAB file) being loaded is a radio
driver, and the PCMCIA slots should be started after this file is loaded. By default, the
PCMCIA slots are off on powerup, to prevent the “Unidentified PCMCIA Slot” dialog
from appearing. Once the drivers are loaded, the slot can be turned on. The value in the
PCMCIA field is a DWORD, representing the number of seconds to wait after installing
the CAB file, but before activating the slot (a latency to allow the thread loading the
driver to finish installation). The default value of
0 means the slot is not powered on.
The default values for the default radio drivers (listed below) is 1 , meaning one second
elapses between the CAB file loading and the slot powering up.