Defines display objects which represents a group of one or more forms that are to be presented on the screen as a unit. The DisplayForms entity set describes the placement and behavior of the individual forms within the display. The Displays entity set describes the display itself.

Even though a window can contain, at most, one display, several different displays may appear in different windows on the screen to build a user interface to a complex application. .

Establishing a Display

Call up the Development Center with the DC command, select DISPLAYS from the OBJECTS drop-down menu, and use the tools of the Development Center to define the desired display. (The Development Center calls up the Screen Painter for you and automatically CREATEs the display.)


"Paint" the forms that make up the display by calling up the Screen Painter:

display define displayname [in dirname]

(The Screen Painter adds appropriate entries to the Windows, Menus, Displays, DisplayForms, Forms, and FormFields entity sets, defining the display.)

When you are satisfied with the display, exit the Screen Painter, and answer OK to the prompts to save the desired objects; the Screen Painter automatically CREATEs the objects.

Fields of the Displays Entity Set




Name of the display


Application directory location of the display


Alphanumeric identifier for the display

HMargin, VMargin

Interior margins of the display(characters)

WdgHMargin, WdgVMargin

Interior margins of the display (twips)

WdgWdth, WdgHght

Size of the display (twips)

Wdth, Hght     

Size of the display (characters)


A unique identifier assigned by the Development Center