Split screen or docking container help

Question

Hi all,
My program
i have a docking control where the user configure his own programs as nodes on the left pane
Requirement:
On double click of node corresponding program has to appear or get executed on the right pane.
How do i achieve this.
Can any one help me.
Regards,
Lisa

Answer 1

Hi Lisa,
you must register the events in the left pane and then capture them for the right pane.
For example, if you are using a tree control, you have to register the events in this way:
  DATA: EVENTS TYPE CNTL_SIMPLE_EVENTS,
        event type cntl_simple_event.
* define the events which will be passed to the backend
  " node double click
  event-eventid = CL_GUI_SIMPLE_TREE=>EVENTID_NODE_DOUBLE_CLICK.
  event-appl_event = 'X'. " process PAI if event occurs
  APPEND event to events.
  CALL METHOD G_TREE->SET_REGISTERED_EVENTS
    EXPORTING
      EVENTS = EVENTS
    EXCEPTIONS
      CNTL_ERROR                = 1
      CNTL_SYSTEM_ERROR         = 2
      ILLEGAL_EVENT_COMBINATION = 3.
  IF SY-SUBRC <> 0.
    MESSAGE A000.
  ENDIF.
* assign event handlers in the application class to each desired event
  SET HANDLER G_APPLICATION->HANDLE_NODE_DOUBLE_CLICK FOR G_TREE.
  SET HANDLER G_APPLICATION->HANDLE_EXPAND_NO_CHILDREN FOR G_TREE.
Then you have to capture the events:
CLASS LCL_APPLICATION DEFINITION.
  PUBLIC SECTION.
    METHODS:
      HANDLE_NODE_DOUBLE_CLICK
        FOR EVENT NODE_DOUBLE_CLICK
        OF CL_GUI_SIMPLE_TREE
        IMPORTING NODE_KEY,
ENDCLASS.
CLASS LCL_APPLICATION IMPLEMENTATION.
  METHOD  HANDLE_NODE_DOUBLE_CLICK.
    " this method handles the node double click event of the tree
                                       " control instance
  ENDMETHOD.
ENDCLASS.
For more information, please have a look at the Reuse Library (transaction SE83) > SAP Technology > Controls > Tree Controls, or go directly to program SAPSIMPLE_TREE_CONTROL_DEMO.
I hope it helps. Kind regards,
Alvaro