Psion Teklogix 7527S User's Guide download pdf (Page 253)

Appendix B: Registry Keys

Registry Settings For Non-Psion Teklogix Device Drivers

Psion Teklogix Mobile Devices SDK Developers Guide B-3

B.1.5.1 Loading Non-Psion Teklogix Drivers

At system startup the following process is used to load non-Psion Teklogix device drivers:

1. The contents of the Manufacturer/Model field in the expansion module EEPROM are

appended to the registry key

HKEY_LOCAL_MACHINE\Drivers\PsionTeklogix\Expansion Slot\

For example, if the Manufacture/Model field contains:

ACME gizmo

then the following driver is loaded:

HKEY_LOCAL_MACHINE\Drivers\PsionTeklogix\Expansion Slot\ACME gizmo

2. The DriverActivate() function uses this registry key to activate the driver.

No driver is loaded if:

•The Manufacturer/Model field is not valid, or it is empty.

• The derived registry key does not exist.

Note: If multiple device drivers are required for the same device, subkeys are defined. Only the

first driver is automatically activated. The application must load and activate all

additional device drivers.

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Psion Teklogix 7527S User's Guide Page 253