FUNCTIONUnder review

READVAR()

ReadVar() -> cName

Identifies the variable of the field being edited.

READVAR()AdvPL

01 · OVERVIEW

Overview

The historical manual describes ReadVar in MsGetDados, MsGetDB and MsMGet validation. It returns a variable name, not its value. No result is assumed outside editing context. Avoid turning that name into a macro for arbitrary state access; in MVC use model APIs and event field identifiers. (Sources: refs. 1–1.)

02 · SYNTAX

Syntax

ReadVar() -> cName

Return value

Character: edited variable name.

03 · PRACTICAL EXAMPLE

Commented example

#Include "Protheus.ch"

User Function Ed611()
    // Install this block only in a supported GET context.
    Local bField := {|| ReadVar()}
    ConOut(ValType(bField))
Return Nil

Expected result

Creates block B without simulating an active field. Under review: editorial example neither compiled nor run in Protheus. Check includes, release, RDD and context before testing.

BEST PRACTICES

Historical material; verify control and release before attaching validation.
Under review: editorial example neither compiled nor run in Protheus. Check includes, release, RDD and context before testing.

READVAR()

Overview

Syntax

Return value

Commented example

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