Get Example source ABAP code based on a different SAP table
ABAP_DYNPRO - List Box with Value List from Input Help This example demonstrates the recommended way to enable a dropdown list box.
ABAP_SOURCE_CODE ABAP_EXEC
ABAP_DESCRIPTION The static dynpro number of dynpro 100 is 100. The screen layout contains a single input field, namely the component SDYN_CONN-CARRID . Its attribute dropdown is Listbox, the output length is 20, the attribute value list is empty, and it is assigned function code SELECTED. The functions BACK, EXIT, and CANCEL are defined in the GUI status with the function type E. The dynpro flow logic is as follows: PROCESS BEFORE OUTPUT. MODULE status_0100. PROCESS AFTER INPUT. MODULE cancel AT EXIT-COMMAND. MODULE user_command_0100. PROCESS ON VALUE-REQUEST. FIELD sdyn_conn-carrid MODULE create_dropdown_box. The user is not allowed to enter values in the screen field. When the user selects the input field on dynpro 100, the system displays a list box. The Value list attribute is empty, so the system launches the input mechanism. In this case, the event block PROCESS ON VALUE-REQUEST is created in the dynpro flow logic which overrides all other mechanisms. The system fills a two-column internal table in the corresponding dialog module and passes it to the input help using the function module F4IF_INT_TABLE_VALUE_REQUEST. The system inserts the two columns of the table into the list box. When the user selects a line in the list box, the PAI event is raised using the function code SELECTED and the value in the first column of the internal table is copied to the input field.
