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ABAP | Table Controls

Table controls and step loops are objects for screen table display that you add to a screen in the Screen Painter.

From a programming standpoint, table controls and step loops are almost exactly the same. Table controls are simply

improved step loops that display data with the look and feel associated with tables in desktop applications.

With table controls, the user can:

Scroll through the table vertically and horizontally

Re-size the width of a column

Scroll within a field (when field contents are wider than the field)

Select table rows or columns

Re-order the sequence of columns

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Save the current display settings for future use

Table controls also offer special formatting features (some automatic, some optional) that make tables easier to look at

and use. Table Control provides -

automatic table resizing (vertical and horizontal) when the user resizes the window

separator lines between rows and between columns (vertical and horizontal)

column header fields for all columns

One feature of step loops is that their table rows can span more than one line on the screen. A row of a table control, on

the other hand, must always be contained in a single line (although scrolling is possible).

In general, many of the features provided by the table control are handled locally by your systems SAPgui

frontend, so you do not need to program them yourself. The only notable exception to this is vertical

scrolling.

Example (Transaction TZ60)

Syntax

To handle table controls in ABAP programs, you must declare a control in the declaration part of the program for each

table control using the following statement:

CONTROLS TYPE TABLEVIEW USING SCREEN

where is the name of the table control on a screen in the ABAP program. The control allows the ABAP

program to read the attributes of the table control and to influence the control .Here, is the screen number where

the initial values of the table are loaded.

Cursor Position for a table control can be set in following ways:

At PBO you can set the cursor on a specific field of a specific row of a table control.

SET CURSOR FIELD LINE [OFFSET ]

Using the optional additionOFFSET, you can enter the offset of the cursor in the field as described under Setting the

Cursor Position.

At PAI you can read the current cursor position.


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GET CURSOR FIELD LINE

In addition to the information given under Finding Out the Cursor Position, field contains information on which

row of the table control the cursor is currently on. You can also use

GET CURSOR LINE .

to determine the row of the table control. SY-SUBRCallows you to check if the cursor is placed in a row of a table

control.

For getting the corresponding line of the internal table :

GET CURSOR line .

ind = -top_line + 1.

Read table index ind.

The system variablestepl- contains the current table line index in a loop endloop. Loopc contains number of lines

visible in the table

To create a table control

1.Add a table control element to your screen

2.Give a name to the table control. In the ABAP program declare a structure with the same ( CONTROLS type

TABLEVIEW USING SCREEN )

3.To create fields go to the Dict./Program fields function.

Enter the name of the structure whose fields you want. (If you want it to pick it from dictionary of your program

click the relevant puhbutton).

In the field list choose the fields you want and choose ok.

Click in the table control area

If you want a selection column , check the appropriate check box in the attributes and give it a name. Create the field in

the ABAP program.

In the PBO you should have the statement

LOOP at USING CONTROL .

ENDLOOP.

In the PAI you should have.

LOOP at .

ENDLOOP.

It is within the loops that data transfer happens between the screen and the internal table.When you populate the interna

table use DESCRIBE TABLE LINES -lines, to store the total number of lines in the control.The


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FIELD statement can be used to control when the data transfer happens

To change the attributes of individual cells temporarily change the SCREEN table in the PBO. You can change the

attributes of the structure created by the CONTROLS statement

-fixed_cols etc are the attributes of the control

-cols-index etc are the attributes of the columns.

-cols-screen-invisible etc are the screen attributes of each column.

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