Regmerge.dll; Copyfiles - Symbol MC909X Integrator Manual

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RegMerge.dll

RegMerge.dll is a built-in driver that allows registry edits to be made to the Windows CE Registry.
Regmerge.dll runs very early in the boot process and looks for registry files (.reg files) in certain Flash File
System folders during a cold boot. It then merges the registry changes into the system registry located in RAM.
Since the registry is re-created on every cold boot from the default ROM image, the RegMerge driver is
necessary to make registry modifications persistent over cold boots.
RegMerge is configured to look in the root of two specific folders for .reg files in the following order:
\Platform
\Application
Regmerge continues to look for .reg files in these folders until all folders are checked. This allows folders later
in the list to override folders earlier in the list. This way, it is possible to override Registry changes made by the
Platforms partitions folders. Take care when using Regmerge to make Registry changes. The DCP for
MC9000w contains examples of .reg files.
NOTE Regmerge only merges the .reg files on cold boots. The merge process is skipped during a warm boot.
Typically, do not make modifications to registry values for drivers loaded before RegMerge. However, these
values may require modification during software development. Since these early loading drivers read these
keys before RegMerge gets a chance to change them, the mobile computer must be cold booted. The warm
boot does not re-initialize the registry and the early loading driver reads the new registry values.
Do not use Regmerge to modify built-in driver registry values, or merge the same Registry value to two files in
the same folder, as the results are undefined.

CopyFiles

Windows CE expects certain files to be in the Windows folder, residing in volatile storage. Windows CE
maintains the System Registry in volatile storage. CopyFiles copies files from one folder to another on a cold
boot. Files can be copied from a non-volatile partition (Application or Platform) to the Windows or other volatile
partition during a cold boot. During a cold boot CopyFiles looks for files with a .CPY extension in the root of the
Platform and Application FFS partitions (Platform first and then Application). These files are text files
containing the source and destination for the desired files to be copied separated by ">". The following example
from the file application.cpy is contained on the demo application partition included in the DCP for MC9090c50.
It can also be obtained from the Symbol web site at http://devzone.symbol.com/.
Files are copied to the Windows folder from the Flash File System using copy files (*.cpy) in the following
order:
\Platform
\Application
Example:
\Application\ScanSamp2.exe>\Windows\ScanSamp2.exe
This line directs CopyFiles to copy the ScanSamp2.exe application from the \Application folder to the
\Windows folder.