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LOOP AT SCREEN

Quick Reference

Other versions: 7.31 | 7.40 | 7.54

Syntax


LOOP AT SCREEN INTO wa. 
  ...
ENDLOOP.

Effect

The statement LOOP AT SCREEN ... ENDLOOP define a loop around a statement block. For every screen element of the current dynpro to which a dynpro field is assigned, one loop pass is executed. wa can be specified as the following:

  • an existing work area of the data type SCREEN from ABAP Dictionary,
  • an inline declaration DATA(var), where a work area of the type SCREEN is declared.

After the statement LOOP, the work area contains the properties of the screen element in question.

When a table control or a step loop is processed (that is, within a LOOP of the dynpro flow logic), the current properties are determined for its screen elements in the current row or group. Outside of the processing of a table control or step loop, the statically predefined properties of all rows or groups are determined for its screen elements.


Notes

  • The statement LOOP AT SCREEN behaves like the statement LOOP in a loop across an internal table, where a system table is used instead of an internal table.
  • In particular, the statement LOOP AT SCREEN can be used for selection screens during selection screen processing.
  • This statement also has an obsolete short form, which works with an obsolete built-in structure screen.
  • The obsolete built-in structure screen should not be specified explicitly after INTO.

Executable Example

Dynpros, Dynamic Screen Modifications

Continue

The Structure SCREEN

MODIFY SCREEN

Dynpros, Dynamic Screen Modifications