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DATA

Alternate syntax for VAR: instance variable for the objects.
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 Syntax

        DATA <DataName1> [,<DataNameN>] [ AS <type> ] [ INIT <uValue> ]  
        [[EXPORTED | VISIBLE] | [PROTECTED] | [HIDDEN]] [READONLY | RO]  

 Arguments

        <DataName1>    Name of the DATA      

        <type>         Optional data type specification from the 
                  following: Character, Numeric, Date, Logical, Codeblock,
                  Nil.

        <uValue>       Optional initial value when creating a new 
                  object.

       EXPORTED      Specifies that this DATA is accessible to functions 
                  and methods outside of the class.  VISIBLE is a synonym
                  for EXPORTED.

       PROTECTED     Specifies that this DATA is only accessible to 
                  functions and methods within this class and its
                  subclasses.

       HIDDEN        Specifies that this DATA is only accessible to the 
                  class where it was defined, and is not inherited by the
                  subclasses.

       READONLY      Restricts assignment to the variable. If specified 
                  with the EXPORTED clause, assignment is only permitted
                  from the current  class and its subclasses.  If specified
                  with the PROTECTED clause,  assignment is only permitted
                  from the current class.  RO is a synonym for READONLY.


 Description

      DATA elements can also be thought of as the "properties" of an
      object. They can be of any data type, including codeblock.  Once an
      object has been created, the DATA elements are referenced  with the
      colon (:) as in  MyObject:Heading := "Last name".  Usually a class
      also defines methods to manipulate the DATA.

      You can use the "AS <type>" clause to enforce that the DATA is
      maintained as a certain type. Otherwise it will take on the type of
      whatever value is first assigned to it.

      Use the "INIT <uValue>" clause to initialize that DATA to <uValue>
      whenever a new object is created.

      VAR can be a synonym for DATA, or it can use a slightly different
      syntax for compatibility with other dialects.

  
      CLASS TBColumn

         DATA Block      // Code block to retrieve data for the column
         DATA Cargo      // User-definable variable
         DATA ColorBlock // Code block that determines color of data items
         DATA ColSep     // Column separator character
         DATA DefColor   // Array of numeric indexes into the color table
         DATA Footing    // Column footing
         DATA FootSep    // Footing separator character
         DATA Heading    // Column heading
         DATA HeadSep    // Heading separator character
         DATA Width      // Column display width
         DATA ColPos     // Temporary column position on screen

         METHOD New()    // Constructor

      ENDCLASS

Status

      Ready

 Compliance

      DATA is a Harbour extension.

 Platforms

      All