topic Re: SET HANDLER in Application Development and Automation Discussions

SET HANDLER

Former Member — Mon, 25 Jun 2007 07:42:30 GMT

what is the purpose of SET HANDLER?

what is the purpose of cl_dd_document class?

what is the purpose of cl_gui_html_viewer class?

methods top_of_page for event top_of_page

of cl_gui__alv_grid

importing e_dyndoc_id ?

what it means...

Re: SET HANDLER

seshatalpasai_madala — Mon, 25 Jun 2007 07:47:40 GMT

Hi,

SET HANDLER is used to register the Event handler method of perticular event that will be raised by a perticular class.

CL_GUI_HTML_VIEWER is the class that is used to create space on your screen which can display HTML content.

Check this report for the TOP_OF_PAGE event example

BCALV_TEST_GRID_EVENTS.

Regards,

Sesh

Re: SET HANDLER

uwe_schieferstein — Mon, 25 Jun 2007 09:07:48 GMT

Hello Selva

Have a look at my sample report ZUS_SDN_ALVGRID_EVENTS_HOTSPOT:

If you inactive the SET HANDLER statement then you will see that the report no longer reacts on the event-based user actions (i.e. HOTSPOT_CLICK and BUTTON_CLICK on the ALV grid).

Regards

Uwe

Re: SET HANDLER

Former Member — Mon, 25 Jun 2007 09:53:39 GMT

Hi Selva,

Events and methods are 2 components of a class. Whenever an event is raised, it might be required to carry out some functionality. That is coded in the handler method for the event. Now whenever an event is raised, the handler method will be automatically called by system if and only if the handler method is registered to the event at runtime. This is done by the SET HANDLER statement. If you do not register the event with the handler method, the method will not be implicitly called by the system when the event is raised.

Award points if found useful.

Regards

Indrajit