DO CASE

Purpose

Multiple choice selection command

Syntax

DO CASE

CASE <condition>

[<commands>]

[CASE <condition>

[<commands>]]

[OTHERWISE

[<commands>]]

ENDCASE

See Also

DO WHILE, ICASE(), IF, IF(), IIF()

Description

The DO CASE command selects one course of action out of many alternatives. Lianja evaluates each CASE <condition> in turn. As soon as one of the conditions evaluates to true (.T.) the <commands> for that CASE are executed and any further case statements are ignored. Following execution of the <commands>, the program continues after the ENDCASE statement.

OTHERWISE

If an OTHERWISE statement is present and no CASE <condition> evaluates to .T., the OTHERWISE <commands> are executed.

ENDCASE

If no CASE <condition> is .T., and there is no OTHERWISE statement specified, then control skips to the next command following the ENDCASE.

CASE statements, as with all of the other Lianja statements can be nested. In other words, a CASE statement can contain further DO CASE commands.

Example

do case
    case mColor = "red"
        // do something
    case mColor = "blue"
        // do something else
    otherwise
        // any other mColor value
endcase