HIDE

Short Reference

Syntax

HIDE dobj.

Effect

This statement stores the content of a variable dobj together with the current list line whose line number is contained in sy-linno in the hide area of the current list level. The data type of the variables dobj must be flat and no field symbols can be specified that point to rows of internal tables, and no class attributes can be specified. The stored values can be read as follows:

• For each user action in a displayed screen list that leads to a list result, all the row values stored using HIDE - that is, the row on which the screen cursor is positioned at the time of the event - are assigned to the respective variables.
  
• If a list row of an arbitrary list level is read or modified using the statements READ LINE or MODIFY LINE, all the values of this row stored using HIDE are assigned to the respective variables.
  
  
  

Notes

• The HIDE statement works independently of whether the list cursor was set. In particular, variables for empty list rows can be stored - that is, rows in which the list cursor was positioned using statements like SKIP.
  
• The HIDE statement should be executed immediately at the statement that has set the list cursor in the row.
  
• Outside of classes, prior to release 7.0, for dobj constants and literals could still be specified. However, it was not possible to read them at list events and in the READ LINE statement.
  
  
  

Example

Storing square numbers and cubic numbers for a list of numbers. The example shows that arbitrary variables can be stored independently of row content. In the real situation, one would more likely store only the number and execute the calculation, when required, in the the event block for AT LINE-SELECTION.

REPORT ...

DATA: square TYPE i,
      cube   TYPE i.

START-OF-SELECTION.
  FORMAT HOTSPOT.
  DO 10 TIMES.
    square = sy-index ** 2.
    cube   = sy-index ** 3.
    WRITE / sy-index.
    HIDE: square, cube.
  ENDDO.

AT LINE-SELECTION.
  WRITE: square, cube.

Exceptions

Non-Catchable Exceptions

• Cause: The field is too long for HIDE.
  Runtime Error: HIDE_FIELD_TOO_LARGE
  
• Cause: HIDE in a table row or a component in a table row is not possible.
  Runtime Error: HIDE_ILLEGAL_ITAB_SYMBOL
  
• Cause: HIDE in a local field is not possile.
  Runtime Error: HIDE_NO_LOCAL: HIDE
  
• Cause: HIDE in an empty page is not possible.
  Runtime Error: HIDE_ON_EMPTY_PAGE