EXPRCHECK()

Purpose

Function to check expression for errors

Syntax

EXPRCHECK(<expC>)

See Also

ERROR(), MESSAGE()

Description

The function EXPRCHECK() evaluates the Lianja/4GL expression specified in the string <expC>, and returns the appropriate Lianja error number, or 0 if the expression evaluated correctly.

Example

function CheckExpr
parameter querystring
if exprcheck(querystring) > 0
    dialog box "Error in Query String: " + message()
    m_ret = .F.
else
    m_ret = .T.
endif
return m_ret

Products

Lianja Server, Lianja