☜	Error Code M47 M[UMPS] by Example					☞

M47, Invalid attribute value

Introduced in the 1995 ANSI M[UMPS] Windowing Application Programmers’ Interface.

If a value domain is specified for an attribute, all values outside the specified domain are reserved. Unless specifically stated otherwise, if an application attempts to assign an attribute value outside of the specified domain of that attribute, this error will occur. After this, special variable $ERef will contain a value that indicates the reference to the structured system variable for which the error occurred.

Assume that an application has defined two windows, A and B. If, for window A, the application attempts to assign a value to the PARENT attribute, naming window B as the parent, and the DISPLAY attributes for windows A and B are different, this error will occur. After this, special variable $ERef will contain a value that indicates the reference to the structured system variable for which the error occurred.

If an application attempts to assign a value of "TRUE" to a TIED attribute, and the window’s parent is a display, this error will occur. After this, special variable $ERef will contain a value that indicates the reference to the structured system variable for which the error occurred.

In earlier printed versions of the 1995 ANSI M[UMPS] Windowing Application Programmers’ Interface, this error was identified as M?2.

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Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.

The information in this page is NOT authoritative and subject to be modified at any moment.
Please consult the appropriate (draft) language standard for an authoritative definition.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 16-Nov-2023, 14:48:31.

For comments, contact Ed de Moel (demoel@jacquardsystems.com)