The registry is a database under eRTOS in which applications and system components store and retrieve configuration data. The data is stored in a text-based RtConfig.reg file. Applications use the registry API to retrieve, modify, or delete registry data.
You should not edit registry data that does not belong to your application unless it is absolutely necessary. If there is an error in the registry, eRTOS may not function properly.
The registry is a file-based database that contains keys. Keys are containers that consist of other keys (subkeys) or values. Both keys and values borrow their naming convention from the Windows registry database. Values store different kinds of data and can be one of these data types:
- REG_SZ: A sequence of characters that can be used to store case-sensitive text information.
- REG_DWORD: A 32-bit unsigned integer that can be used to store numerical values.
- REG_QWORD: A 64-bit unsigned integer that can be used to store numerical values.
Only these case-sensitive predefined keys are supported:
- HKEY_LOCAL_MACHINE
- HKEY_USERS
Note: APIs that are not explicitly documented as supported are not guaranteed to work. You should thoroughly test any code that uses undocumented functions.
| Registry Function | Notes |
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Closes a handle to the specified registry key. |
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Creates Key. |
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Creates the specified key. |
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Deletes a subkey and its values |
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Deletes a subkey and its values from the specified platform specific view of the registry. |
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Removes the specified value from the specified registry key. |
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Enumerates the values for the specified open registry key. |
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Opens the specified registry key. |
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Opens the specified registry key |
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Retrieves the data of a specified registry key. |
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Sets the value of registry key. |
