abap屏幕中下拉框写在哪个事件
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选择屏幕的话，写在AT SELECTION-SCREEN ON VALUE-REQUEST
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Dropdown list is a user interface element which
displays a list of values from which a user can select one value. Follow
the below steps to create a dropdown list in SAP ABAP selection screen.
First build the list in the INITIALIZATION event.
Capture the value selected by the user from the list in the AT SELECTION-SCREEN event.
Use the selected value for further processing.
displays a list of values from which a user can select one value. Follow
the below steps to create a dropdown list in SAP ABAP selection screen.
First build the list in the INITIALIZATION event.
Capture the value selected by the user from the list in the AT SELECTION-SCREEN event.
Use the selected value for further processing.
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