Lesson 1: Creating a Custom Control (SAP Library

Lesson 1: Creating a Custom Control

Task

In this lesson, you first of all create the prerequisites for integrating a control into an ABAP program. Next, you create a control for editing texts whose functions you will enhance step by step later on.

Overview: Objectives

In this lesson, you learn:

How to integrate a visible control into a screen
How to create a control
Which functions are automatically supported by the textedit control

Basics

Controls are wrapped through ABAP Objects classes. Creating a control is consequently equivalent to instantiating an object, that is, generating an instance.

Basically, you generate objects using a constructor that determines the initial properties of the object. Each class that allows you to generate objects has such a constructor.

When you generate an object, you do not explicitly call the constructor. Instead, you create an instance using the CREATE OBJECT statement that implicitly executes the constructor.

To Continue

Lesson 2: Event Handling describes how to catch and further process events of a control.