Property Declaration
PROPERTY [ READ ] Identifier AS Datatype
Only in 3.1 version
PROPERTY [ READ ] Identifier [ , Synonymous1 [ , Synonymous2 ... ] ] AS Datatype
This declares a
class property.
If the keyword
READ is specified, then the property will be read-only.
Once declared, a property must be implemented : you must write a function to read the property, and, if not read-only, a function to write the property.
The name of the read function is the name of the property followed by an underscore and the word
Read. This function takes no argument and must return a data whose type is the same as the property datatype.
The name of the write function is the name of the property followed by an underscore and the word
Write. This function is a procedure that returns nothing, and that takes only one argument whose type is the same as the property datatype.
Property Synonymous
Only in 3.1 version
It is possible to declare up to three synonymous to the declared properties by using the second syntax.
Example
PROPERTY Enabled AS Boolean
PROPERTY READ Handle AS Integer
...
PRIVATE $bEnabled AS Boolean
PRIVATE $iHandle AS Integer
' Implements the Enabled property
FUNCTION Enabled_Read() AS Boolean
RETURN $bEnabled
END
SUB Enabled_Write(bEnabled AS Boolean)
$bEnabled = bEnabled
UpdateEverything
END
' Implements the Handle property
FUNCTION Handle_Read() AS Integer
RETURN $iHandle
END
> lang > propdecl 
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