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ID DYNPRO% • LOOP AT SCREEN ABAP Statement • INTO LOOP AT SCREEN
LOOP AT SCREEN Short Reference
ABAP_SYNTAX LOOP AT SCREEN INTO wa. ... ENDLOOP.
What does it do? 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 the ABAP Dictionary,
an inline declaration DATA(var) or FINAL(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 line or group. Outside of the processing of a table control or step loop, the statically predefined properties of all lines or groups are determined for its screen elements.
Latest 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.
