17. Selectioon screens and user messages

Question 1

Selection table

Answer 1

Selection criteria for each item on a selection screen are stored in a selection table. Selection
tables are system-generated internal tables

Question 2

Standard field format for selection tables

Answer 2

Sign, option, low, high

Question 3

SIGN

Answer 3

This field indicates whether the current row of the table is inclusive or exclusive. Each row of the internal table represents a particular condition. The overall condition specified by the selection table is the union of lines marked with sign I (inclusive), less the union of lines marked with sign E (exclusive).

Question 4

OPTION

Answer 4

This field holds the relational operator for the current row of the selection table (i.e.., “EQ” for =)

Question 5

LOW

Answer 5

This field holds the low value for range comparisons. If the comparison is against a single value, this field contains that value.

Question 6

HIGH

Answer 6

This field holds the high value for range comparisons. If the comparison is against a single value, this field is left blank.

Question 7

NO-EXTENSION option

Answer 7

When the NO-EXTENSION option is used, the user will not see the arrows pointing to the right at the far right.

Question 8

NO INTERVALS option

Answer 8

When this option is utilized there will be no FROM … TO choices. The NO INTERVALS option may be used in conjunction with the NO-EXTENSION option. (used with SELECT-OPTIONS).

Question 9

REJECT statement

Answer 9

The REJECT statement unconditionally terminates the current event processing block. It is normally used with a logical database program. REJECT skips any remaining processing for the current record (and any associated records at lower database levels). Processing resumes with the next record at the same database level.

Question 10

PARAMETERS statement

Answer 10

The PARAMETERS statement creates a single entry field on the selection screen. It also creates a variable in your program with the same name. The value placed into the field at run-time by the user is also placed into the variable.

Question 11

PARAMETERS statement options

Answer 11

DEFAULT, LOWER CASE, OBLIGATORY

Question 12

AS CHECKBOX clause

Answer 12

To create a parameter as a checkbox, use the AS CHECKBOX clause.

Question 13

RADIOBUTTON GROUP

Answer 13

To create parameters as radio buttons, use the RADIOBUTTON GROUP clause. The parameter will automatically be defined as type C and length 1

Question 14

MATCHCODE OBJECT

Answer 14

To attach a Search Help to a parameter field, use the MATCHCODE OBJECT clause.

Question 15

SELECTION-SCREEN SKIP

Answer 15

This option will generate blank lines on the screen

Question 16

SELECTION-SCREEN ULINE

Answer 16

This option places an underline on the screen at a location and length specified by the programmer.

Question 17

SELECTION-SCREEN COMMENT

Answer 17

Will place a user defined comment on the screen at a location specified by the programmer. The comment text may also be a variable.

Question 18

SELECTION-SCREEN BEGIN/END OF LINE

Answer 18

This option places multiple fields immediately adjacent to one another. The fields to be positioned must be listed between the BEGIN OF LINE and END OF LINE parameters.

Question 19

SELECTION-SCREEN POSITION

Answer 19

This is the position of the next comment or parameter on the screen. For the programmer can use a number, POS_HIGH, or POS_LOW. POS_HIGH and POS_LOW are the locations of the From and To values on the screen.

Question 20

SELECTION-SCREEN FUNCTION KEY Statement

Answer 20

The SELECTION-SCREEN FUNCTION KEY statement allows you to place pushbuttons on the application toolbar of the selection screen. The syntax is: SELECTION-SCREEN FUNCTION KEY

Question 21

The SSCRFIELDS (Screen Fields) table

Answer 21

Is used by the selection screen to store data that can be passed to the program for further processing.
This data might include:
§ Function codes
□ Which can trigger processing in the program
§ Text
□ Which will appear on the screen