difference between screen and selection screen

[Former Member]

explain the difference between

call screen

and

call selection-screen

with easy understandable explanation with simple example

thanks guyz

[Former Member]

Hi,

Refer

http://help.sap.com/saphelp_nw2004s/helpdata/en/9f/dba82335c111d1829f0000e829fbfe/content.htm

Regards

[Former Member]

Hi,

<b>CALL SCREEN</b> interrupts the processing of the current screen to call a new screen or a chain of screens, processing of the current screen is resumed directly after the call.

Call selection-screen

Similar to <b>CALL SCREEN</b>, except the screen you are calling must be a selection screen defined using<b> SELECTION-SCREEN BEGIN/END OF SCREEN</b> or the standard selection screen of a report.

It calls the selection screen with in the program.

If you call a selection screen using <b>CALL SCREEN</b> instead of <b>CALL SELECTION-SCREEN</b>, the initialization necessary for selection screens is not carried out, and the screen will not run properly when displayed.

EG:<b>

SELECTION-SCREEN BEGIN OF SCREEN 123 AS WINDOW TITLE TEXT-456.

SELECTION-SCREEN BEGIN OF BLOCK BL1 WITH FRAME TITLE TEXT-BL1

NO INTERVALS.

SELECT-OPTIONS SEL1 FOR SY-SUBRC.

PARAMETERS PAR1 LIKE SPFLI-CARRID.

SELECTION-SCREEN COMMENT /10(20) TEXT-COM.

SELECTION-SCREEN END OF BLOCK BL1.

SELECTION-SCREEN END OF SCREEN 123.

...

CALL SELECTION-SCREEN 123 STARTING AT 20 5.

IF SY-SUBRC = 0.

...

ELSE.

...

ENDIF.</b>

rewards if useful,

regards,

nazeer

[Former Member]

hello,

CALL SELECTION-SCREEN

For any program in which selection screens are defined, you can call these screens at any point of the program flow using the following statement:

CALL SELECTION-SCREEN <numb> [STARTING AT <x1> <y 1>]

[ENDING AT <x2> <y 2>].

This statement calls selection screen number <numb>. The selection screen called must be defined in the calling program either as the standard selection screen (screen number 1000) or as a user-defined selection screen (any screen number). You must always use CALL SELECTION-SCREEN to call selection screens.In case of CALL SCREEN, the system will not be able to process the selection screen.

CALL SCREEN.

BY calling CALL SCREEN current (calling) chain is suspended , and a next screen (screen chain) is called .The called can then return to the suspended chain with the statement LEAVE SCREEN TO SCREEN 0 .Sometime we might want to let an user call a pop up screen from the main application screen to let him enter secondary information.After they have completed their enteries, the users should be able to close the popup and return directly to the place where they left off in the main screen.Here comes CALL SCREEN into picture .

here is also link for further knowledge.

http://help.sap.com/saphelp_nw04/helpdata/en/9f/dba82335c111d1829f0000e829fbfe/frameset.htm

reward points if helpful,

regards

anuj

.