CAN-SET function

Returns a logical value indicating whether you can set a specified attribute for a specified widget.

Syntax 

 

CAN-SET ( handle , attribute-name )

handle

An expression that evaluates to a handle. The handle must refer to a valid widget.

attribute-name

An expression that evaluates to a character‑string value. The contents of the string must be an attribute name. For more information on attributes, see the “Handle Attributes and Methods Reference” section.

Notes 

For a field‑level widget, the CAN-SET function always returns TRUE for the FRAME attribute; however, you can set the frame attribute only if the widget is dynamic. Therefore, before setting the FRAME attribute for a widget, you can test that the operation is valid with a statement similar to the following:

 

IF CAN-SET(my-handle, "FRAME") AND my-handle:DYNAMIC THEN   my-handle:FRAME = frame-handle.

For SpeedScript, use with buffer‑field, buffer‑object, buffer, and query‑object handles.

See also 

CAN-QUERY function, LIST-QUERY-ATTRS function, LIST-SET-ATTRS function