You execute a function whenever you choose a menu entry or press a function key or pushbutton. The element in the interface is linked to the ABAP program itself by a unique function code, which you assign to the interface element when you create it in the Menu Painter. When you choose a function, its function code is passed either to the system field SY-UCOMM (in type 1 programs) or to the OK_CODE field (in transactions). You can address these fields in your programs to find out which function the user has chosen.

The definition of an interface function contains the following elements:

• Function code: Unique key for the function, which can be interpreted by the ABAP program.

• Function text: A text that describes the function (such as Save).

• Icon name: Name of the icon to be displayed on a pushbutton.

• Icon text: Text to be output on the pushbutton in addition to the icon.

• Infotext: Text to be displayed in the status bar.