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LOOP AT SCREEN
Syntax
LOOP AT SCREEN INTO wa.
...
ENDLOOP.
Effect
The statements 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:
-
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
Screens, Dynamic Screen Modification