Become Better With MODULE POOL PROGRAMMING In 10 Minutes

Ishnoor Singh Sethi
May 31, 2022
3 min read

SAP-ABAP supports two types of programs – Report Program and Dialog Program.

If your ABAP program demands user input , Dialog programming is used.

A user dialog is any form of interaction between the user and the program and could be any of the following

Entering data
Choosing a menu item
Clicking a button
Clicking or double clicking an entry

Dialog program is also used when we need to navigate back and forth between screens

Dialog programs are created with type as 'M' – Module Pool. They cannot be executed independently and must be attached to at least one transaction code in which you specify an initial screen.

Events in Module Pool Programming —

Process Before Output (PBO) event: which is processed before the screen is displayed
Process After Input (PAI) event: which is processed after a user action on the screen
Process on help request (POH): which is processed when F1 is pressed
Process on value request (POV):which is processed when F4 is pressed

Steps to start with Module Pool Programming

On Object Navigator Screen (tcode - “SE80”) select program from drop down menu and then fill the name for the program. Click on enter and save the program.

After saving Program name will appear in the below grid, right click on program name and select create and screen.

Steps to create layout for the screen —

Step 1 - Click on layout button.

Sep 2 - Apply functions as per requirement

To add table contents in layout click on the circled button and then write the name of the table and click on “get from dictionary.” After clicking select the field and click on tick icon.

Coding Screen —

Main coding for the program —

Screen 1000 coding — Customer verification screen

Screen 1000 layout — Customer verification screen

Screen 2000 coding — New Customer Registration screen

Screen 2000 layout — New Customer Registration screen

GUI elements —

Output when Entered Customer No. is present —

Output when Entered Customer No. is not present —

Database table —

Tab Strip Control —

A tabstrip control is a screen object consisting of two or more pages. Each tab page consists of a tab title and a page area. If the area occupied by the tabstrip control is too narrow to display all of the tab titles, a scrollbar appears, allowing you to reach the titles that are not displayed. There is also a pushbutton that allows you to display a list of all tab titles.

Tabstrip controls allow you to place a series of screens belonging to an application on a single screen, and to navigate between them easily.

Steps to create a Tab Strip Control menu —

Step 1 - On the painter window click on the circled button (Tabstrip Control).