User interfaceDialog instructions

Parent topic: Dialog instructions

Static display (DISPLAY/ERROR/MESSAGE/CLEAR)

This section explains the instructions displaying static information to application forms, such as DISPLAY, ERROR, MESSAGE, CLEAR.

Display of data and messages
The values contained in program variables can be displayed to the current form with the DISPLAY BY NAME or DISPLAY TO instruction.
DISPLAY (to stdout)
The DISPLAY instruction displays text in line mode to the standard output channel.
DISPLAY AT
Displays text at a given line/column position in the current window.
DISPLAY TO
The DISPLAY TO instruction displays data to form fields explicitly.
DISPLAY BY NAME
The DISPLAY BY NAME instruction displays data to form fields explicitly by name.
CLEAR FORM
The CLEAR FORM instruction clears all fields in the current form.
CLEAR SCREEN ARRAY
The CLEAR SCREEN ARRAY instruction clears the values of all rows of the form list identified by the specified screen array.
CLEAR field-list
The CLEAR field-list instruction clears specific fields in the current form.
MESSAGE
The MESSAGE instruction displays a message to the user.
ERROR
The ERROR instruction displays an error message to the user.
SCROLL
The SCROLL instruction moves data rows up or down in a screen array.

Parent topic: Dialog instructions