• Xbasic COMMENT
• .T.
• .F.
• LET
• DEFINE CLASS ... END CLASS
• DIM ... AS
• DIM...AS...DEFAULT
• Dim ... AS ... New
• Xbasic Arrays
• TYPE ... END TYPE
• CONSTANT, SHARED, GLOBAL
• REDIM
• Namespaces
• Null Table Field Values
• <<%DELIMITER% ... %DELIMITER%
• DELETE
• Operators in Xbasic
• IF ... THEN ... ELSE, ELSEIF
• SELECT ... CASE ... END SELECT
• FOR ... CONTINUE ... NEXT
• FOR ... NEXT, CONTINUE, EXIT FOR
• FOR EACH ... NEXT
• WHILE ... END WHILE, EXIT WHILE
• WITH ... END WITH
• EXIT, EXIT FOR, EXIT FUNCTION, EXIT WHILE
• FUNCTION, EXIT FUNCTION, END FUNCTION
• User-Defined Functions
• END, WEND
• RETURN
• UNDECLARE
• GOTO
• Handling Errors
• ON ERROR GOTO, RESUME NEXT
• RESUME, RESUME NEXT
• STOP
• MODE
• OPTION
• PARENT
• PARENTFORM
• TOPPARENT
• THIS
• YIELD CONTROL
• <%A5 ? ... %>
• A5WINCLUDE
• IMPORT PACKAGE
• Argument_List Data Structure
• Automating Your Alpha Anywhere Applications
• Class Attribute Keywords
• Class Scope Keywords
• Classes
• Code Indirection
• Collections
• Command Statements
• Compiling the Script
• Defining a Function with Optional Pointer Variables
• Expression Components
• Getting the Name of the Currently Running Script or Function
• Modifying Object Event Code on the Fly
• Quoted Xbasic Statement
• Reserved Words
• Variable Data Types
• Xbasic Reference
• MACRO
• DECLARE
• DECLARESTRUCT

Class Scope Keywords

Description

Several keywords are useful for working with scripts.

Three keywords are available:

Shared

All scripts in the current session.

Global

All scripts in the current Database

System

All scripts until Alpha Anywhere is closed down - so you can change from one database to another, and your class is still defined.

Without a keyword, the scope of the class is Local (just like a local function). It can only be used in the current script where it is defined. With a keyword, the scope of the class extends beyond the script in which it is defined.

In other words, the scope of a class is much like the scope of a variable.