SET LEFT SCROLL-BOUNDARY

Basic form 12

SET LEFT SCROLL-BOUNDARY.

Addition:

... COLUMN col

Effect

When you create a list, the current write position (system field SY-COLNO, see WRITE) is set as the left boundary of the movable area (fixing lead columns). When this list page is displayed on the screen, you can scroll horizontally with the scrollbar only from this list column - all list column to the left of this are fixed at the left edge.

Note

The SET RIGHT SCROLL BOUNDARY variant is not currently supported. Using the statement has no effect at present.

Addition:

... COLUMN col

Effect

Sets the column col as the left boundary of the movable area.

Note

The last value set by SET SCROLL-BOUNDARY affects the entire page display and must be reset for each list page (usually in the event TOP-OF-PAGE) - although it can be different for each list page.
The NEW-LINE NO-SCROLLING statement allows you to exclude individual list lines from horizontal scrolling (e.g. title lines and indented comment blocks).

Example

Fix the lead column

DATA: NUMBER     TYPE I,
      SUB_NUMBER TYPE I.

NEW-PAGE NO-TITLE NO-HEADING.

DO 10 TIMES.
  NUMBER = SY-INDEX.
  DO 10 TIMES.
    SUB_NUMBER = SY-INDEX.
    WRITE: /(10) NUMBER,     '|',
            (10) SUB_NUMBER, '|'.
    SET LEFT SCROLL-BOUNDARY.

Not really necessary here because it was already set in the event TOP-OF-PAGE.

    WRITE: 'Data 1', '|', 'Data 2', '|',  'Data 3', '|'. " ... 'Data n'
  ENDDO.
ENDDO.
ULINE.

TOP-OF-PAGE.
  ULINE.
  WRITE: /(10) 'No',     '|',
          (10) 'Sub_No', '|'.
  SET LEFT SCROLL-BOUNDARY.
  WRITE: 'DATA 1', '|', 'DATA 2', '|',  'DATA 3', '|'. " ... 'DATA n'
  ULINE.

This produces the following list:

------------------------------------------------------
No         | Sub_No     | DATA 1  | DATA 2  | DATA 3 |
------------------------------------------------------
        1  |         1  | Data 1  | Data 2  | Data 3 |
        1  |         2  | Data 1  | Data 2  | Data 3 |
        1  |         3  | Data 1  | Data 2  | Data 3 |
...
       10  |         8  | Data 1  | Data 2  | Data 3 |
       10  |         9  | Data 1  | Data 2  | Data 3 |
       10  |        10  | Data 1  | Data 2  | Data 3 |
------------------------------------------------------

Only the columns DATA 1, DATA 2 and DATA 3 are moved with horizontal scrolling.

Example

Reset the lead column for a new page:

NEW-PAGE.

SET LEFT SCROLL-BOUNDARY COLUMN 0.

Additional help

Program-Driven Scrolling