SettingsGetMapping

The type of the function that is used to convert from a value stored in a Settings to a value that is useful to the application.

If the value is successfully mapped, the result should be stored at result and true returned. If mapping fails (for example, if value is not in the right format) then false should be returned.

If value is null then it means that the mapping function is being given a "last chance" to successfully return a valid value. true must be returned in this case.

Parameters:

value	the Variant to map, or null
result	the result of the mapping
user_data	the user data that was passed to get_mapped

Returns:

true if the conversion succeeded, false in case of an error