at user command

[Former Member]

can i know the clear explanation for at user command event

[former_member673464]

hi

Event Block for User-Defined Function Codes

If the user chooses a function code during list processing that is neither processed by the system, or PICK or PF<nn>, the system triggers the event AT USER-COMMAND. For this event, you must define your own GUI status for a list. To react to your own function codes in a program, you must define the following event block:

AT USER-COMMAND.

<statements>.

In this event block, you can use an IF or CASE structure to tell the function codes apart. They are available in the system field SY-UCOMM. There are further system fields that are filled in list events, such as SY-LSIND and SY-PFKEY, that allow you to make further case distinctions.

REPORT demo_list_at_user_command NO STANDARD PAGE HEADING.

START-OF-SELECTION.

WRITE: 'Basic List',

/ 'SY-LSIND:', sy-lsind.

TOP-OF-PAGE.

WRITE 'Top-of-Page'.

ULINE.

TOP-OF-PAGE DURING LINE-SELECTION.

CASE sy-pfkey.

WHEN 'TEST'.

WRITE 'Self-defined GUI for Function Codes'.

ULINE.

ENDCASE.

AT LINE-SELECTION.

SET PF-STATUS 'TEST' EXCLUDING 'PICK'.

PERFORM out.

sy-lsind = sy-lsind - 1.

AT USER-COMMAND.

CASE sy-ucomm.

WHEN 'FC1'.

PERFORM out.

WRITE / 'Button FUN 1 was pressed'.

WHEN 'FC2'.

PERFORM out.

WRITE / 'Button FUN 2 was pressed'.

WHEN 'FC3'.

PERFORM out.

WRITE / 'Button FUN 3 was pressed'.

WHEN 'FC4'.

PERFORM out.

WRITE / 'Button FUN 4 was pressed'.

WHEN 'FC5'.

PERFORM out.

WRITE / 'Button FUN 5 was pressed'.

ENDCASE.

sy-lsind = sy-lsind - 1.

FORM out.

WRITE: 'Secondary List',

/ 'SY-LSIND:', sy-lsind,

/ 'SY-PFKEY:', sy-pfkey.

ENDFORM.

When you run the program, the system displays the following basic list with a the page header defined in the program:

You can trigger the AT LINE-SELECTION event by double-clicking a line. The system sets the status TEST and deactivates the function code PICK. The status TEST contains function codes FC1 to FC5. These are assigned to pushbuttons in the application toolbar. The page header of the detail list depends on the status.

Here, double-clicking a line no longer triggers an event. However, there is now an application toolbar containing five user-defined pushbuttons. You can use these to trigger the AT USER-COMMAND event. The CASE statement contains a different reaction for each pushbutton.

For each interactive event, the system decreases the SY-LSIND system field by one, thus canceling out the automatic increase. All detail lists now have the same level as the basic list and thus overwrite it. While the detail list is being created, SY-LSIND still has the value 1.

regards,

veeresh

[Former Member]

Hi,

AT USER COMMAND is used for interactive processing.

If User clicks any function key, you can write what should be the corresponding processing for it. BACK, EXIT and CANCEL are the standard Function keys.

You can create your own Function keys giving FCODE to them & use them under the event AT-USER COMMAND.

Thanks

Sandeep

Reward if helpful

[Former Member]

Hi Kumar,

Event in interactive reporting

This event is executed whenever the user presses a function key in the list or makes an entry in the command field .

Some functions are executed directly by the system and thus cannot be processed by programs. These include:

PICK See variant AT LINE-SELECTION PFn See variant AT PFn /... System command %... System command PRI Print BACK Back RW Cancel P... Scroll function (e.g.: P+ , P- , PP+3 , PS-- etc.)

Instead of this functions, you can use the SCROLL statement in programs.

Since many of these system functions begin with "P", you should avoid using this letter to start your own function codes.

Otherwise, the effect is as for AT LINE-SELECTION ; also, the current function code is stored in the system field SY-UCOMM .

Example

DATA: NUMBER1 TYPE I VALUE 20,

NUMBER2 TYPE I VALUE 5,

RESULT TYPE I.

START-OF-SELECTION.

WRITE: / NUMBER1, '?', NUMBER2.

AT USER-COMMAND.

CASE SY-UCOMM.

WHEN 'ADD'.

RESULT = NUMBER1 + NUMBER2.

WHEN 'SUBT'.

RESULT = NUMBER1 - NUMBER2.

WHEN 'MULT'.

RESULT = NUMBER1 * NUMBER2.

WHEN 'DIVI'.

RESULT = NUMBER1 / NUMBER2.

WHEN OTHERS.

WRITE 'Unknown function code'.

EXIT.

ENDCASE.

WRITE: / 'Result:', RESULT.

After entry of a function code, the appropriate processing is performed under the event AT USER-COMMAND and the result is displayed in the details list.

Regards,

U. Uma