LIST-QUERY-ATTRS function

Returns a comma-separated list of attributes and methods that are supported for an object or widget.

Syntax 

 

LIST-QUERY-ATTRS ( handle )

handle

A handle to a valid object or widget. The function returns a list of the attributes and methods that are supported for that object or widget.

Example 

The following example uses the LIST-QUERY-ATTRS and LIST-SET-ATTRS functions to populate selection lists with the valid attributes and methods for a specified widget. When you run this procedure, type ? at any time to see lists of valid attributes for the widget that currently has focus.

 

r-lattrs.p

DEFINE VARIABLE inv-price   NO-UNDO LIKE item.price. DEFINE VARIABLE inv-value   NO-UNDO LIKE item.price. DEFINE VARIABLE report-type AS INTEGER   NO-UNDO INITIAL 1. DEFINE VARIABLE qattr-list  AS CHARACTER NO-UNDO LABEL "Readable"   VIEW-AS SELECTION-LIST INNER-CHARS 20 INNER-LINES 5   SCROLLBAR-VERTICAL SORT. DEFINE VARIABLE wattr-list  AS CHARACTER NO-UNDO LABEL "Writable"   VIEW-AS SELECTION-LIST INNER-CHARS 20 INNER-LINES 5   SCROLLBAR-VERTICAL SORT.   DEFINE BUTTON ok-butt LABEL "OK" AUTO-GO. DEFINE BUTTON cancel-butt LABEL "CANCEL" AUTO-ENDKEY. FORM   inv-price LABEL "Price" AT ROW 1.25 COLUMN 2   report-type LABEL "Report Sorted ..." AT ROW 2.25 COLUMN 2     VIEW-AS RADIO-SET RADIO-BUTTONS     "By Catalog Page", 1, "By Inventory Value", 2 SKIP   ok-butt cancel-butt   WITH FRAME select-frame SIDE-LABELS.   FORM qattr-list wattr-list   WITH FRAME list-frame TITLE "Attributes" WIDTH 30 COLUMN 47.   ON ? ANYWHERE DO:   FRAME list-frame:TITLE = "Attributes for " + FOCUS:TYPE.   qattr-list:LIST-ITEMS IN FRAME list-frame = LIST-QUERY-ATTRS(FOCUS).   wattr-list:LIST-ITEMS IN FRAME list-frame = LIST-SET-ATTRS(FOCUS).   ENABLE qattr-list wattr-list WITH FRAME list-frame.   RETURN NO-APPLY. END.   ENABLE ALL WITH FRAME select-frame. WAIT-FOR WINDOW-CLOSE OF CURRENT-WINDOW.

See also 

CAN-QUERY function, CAN-SET function, LAST-EVENT system handle, LIST-EVENTS function, LIST-SET-ATTRS function, LIST-WIDGETS function, VALID-EVENT function