Chapter 21: Managing Initialization Files and the Windows CE Registry

Managing information in the Windows CE registry

Functions for accessing the Registry

PocketBuilder provides several functions you can use to manage application settings in the Windows CE registry.

**Table 21-2: PocketBuilder registry setting functions**
Function	Description
RegistryDelete	Deletes a key or a value in a key in the Windows registry.
RegistryGet	Gets a value from the Windows registry.
RegistryKeys	Obtains a list of the keys that are child items (subkeys) one level below a key in the Windows registry.
RegistrySet	Sets the value for a key and/or a value name in the Windows registry. If the key or value name does not exist, RegistrySet creates a new key or value name.
RegistryValues	Obtains a list of named values associated with a key.

For complete information about these functions, see the online Help.

To explore and edit the Windows CE registry on a Pocket PC, you can download the PHM Registry Editor.

Reading values from the registry

The examples that follow use the registry to keep track of database connection parameters. The connection parameters are maintained in the registry in the MyCo\MyApp\database branch under HKEY_CURRENT_USER\Software.

The following script retrieves values for the default Transaction object from the registry.

RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
   "dbms", sqlca.DBMS)
RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "database", sqlca.database)
RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "userid", sqlca.userid)
RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "dbpass", sqlca.dbpass)
RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "logid", sqlca.logid)
RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "logpass", sqlca.logpass)
RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    “servername", sqlca.servername)
RegistryGet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "dbparm", sqlca.dbparm)

Setting values in the registry

The following script stores the values for the Transaction object (set elsewhere in the application) in the registry:

RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "dbms", sqlca.DBMS)
RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "database", sqlca.database)
RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "userid", sqlca.userid)
RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "dbpass", sqlca.dbpass)
RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "logid", sqlca.logid)
RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "logpass", sqlca.logpass)
RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "servername", sqlca.servername)
RegistrySet("HKEY_CURRENT_USER\Software\MyCo\MyApp\database", &
    "dbparm", sqlca.dbparm)

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