Progress
Language Reference
VALID-EVENT Function
Verifies whether a specified event is valid for a specified widget. For each type of widget, only certain events are valid. The function returns a value (TRUE/FALSE).
SYNTAX
widget-handle
An expression that produces a value of type WIDGET-HANDLE. The value must be the handle of a valid widget.
event-name
A character-string expression that evaluates to the name of an event.
platform
A character-string expression that evaluates to the name of a platform type: GUI or TTY.
SEE ALSO
LAST-EVENT System Handle, LIST-EVENTS Function, LIST-QUERY-ATTRS Function, LIST-SET-ATTRS Function, LIST-WIDGETS Function
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