Using a style

To apply a specific style, set the style-name in the style attribute of the node representing the graphical element in the abstract user interface tree.

There are different ways to set the style attribute of an element:

As a form element attribute, with a STYLE attribute in the form specification file.
In the ATTRIBUTES clause of instructions such as OPEN WINDOW, MESSAGE, ERROR.
Dynamically by program code, using the ui.Form.setElementStyle() method.

The names used to define the STYLE attribute must be a style-name only, these must not contain the element-type that is typically used to define the style in a .4st file (as CheckBox.important for example)

For example, to define a style in a form file for an input field:

EDIT f001 = customer.fname, STYLE = "info";

Several styles can be combined, by using a space as separator:

EDIT f001 = customer.fname, STYLE = "info important";