topic Re: what's the difference between FM and Method? in Application Development and Automation Discussions

what's the difference between FM and Method?

Former Member — Wed, 26 Oct 2005 09:08:42 GMT

We can layout a list by using FM (reuse_alv_grid_display) or Method cl_gui_alv_grid.

can anybody tell me the difference?Thanks

Re: what's the difference between FM and Method?

Former Member — Wed, 26 Oct 2005 09:13:23 GMT

Slam,

Methods are used when you want to add additional functionalities in the ALV ouput.For example,adding a button on the status bar.

FM is used only for standard display and is always preferable when you do not really want any additional functions.

Regards,

Sandip.

Re: what's the difference between FM and Method?

Former Member — Wed, 26 Oct 2005 09:15:32 GMT

Hi Slam,

Functionally speaking they both have the same functionality. The only difference being, the way each of them do it. The Method cl_gui_alv_grid uses object oriented concepts whereas FM (reuse_alv_grid_display) uses a more procedural oriented approach.

HOwever, you can use any one of them irrespective of your style of coding(Procedural or Object oriented).

The method cl_gui_alv_grid will have more options, when compared to the FM , as it is released later than the FM.

Regards,

Ravi Kanth

Re: what's the difference between FM and Method?

Former Member — Wed, 26 Oct 2005 09:21:50 GMT

Hi Slam,

<b>Function modules</b> are procedures that are defined in function groups (special ABAP programs with type F) and can be called from any ABAP program. Function groups act as containers for function modules that logically belong together. You create function groups and function modules in the ABAP Workbench using the Function Builder.

Function modules allow you to encapsulate and reuse global functions in the R/3 System. They are stored in a central library. The R/3 System contains a wide range of predefined function modules that you can call from any ABAP program. Function modules also play an important role in database updates and in remote communications between R/3 Systems or between an R/3 System and a non-SAP system.

Hope u understood.

Thanks&Regards,

Ruthra

Re: what's the difference between FM and Method?

Former Member — Wed, 26 Oct 2005 09:35:33 GMT

Hi Slam

I think class frameowork for alv grid control is more powerful than the FM.

You can see some documentation about ALV GRID CONTROL here

http://help.sap.com/saphelp_erp2004/helpdata/en/22/a3f601d2fe11d2b467006094192fe3/frameset.htm

bye

enzo

Re: what's the difference between FM and Method?

Former Member — Wed, 26 Oct 2005 09:37:51 GMT

thanks a lot~