Release 10.1A: OpenEdge Development:
Progress 4GL Handbook

Using other types of objects

Some visual objects aren’t intended to represent field values. These use DEFINE statements that name the object type directly rather that defining it with a VIEW-AS phrase on a DEFINE VARIABLE statement or a field reference in a frame definition. You’ve already worked with buttons as an example of this. A button has no value but simply exists to allow the user to trigger a CHOOSE event. Now you’ll look at two other objects that don’t represent data values: rectangles and images.