ALV面向对象方法研究：添加双击方法（二）

     继续上篇的内容。

     本文讲解如何添加双击的方法。

     首先程序的开头定义事件类，在ZALV_OO前：   

  CLASS LCL_EVENT_RECEIVER DEFINITION DEFERRED.

     *定义事件
     DATA EVENT_RECEIVER TYPE REF TO LCL_EVENT_RECEIVER.

      
* 定义事件属性跟方法
  CLASS LCL_EVENT_RECEIVER DEFINITION.
    PUBLIC SECTION.
      METHODS:
*     双击方法
      HANDLE_DOUBLE_CLICK
      FOR EVENT DOUBLE_CLICK OF CL_GUI_ALV_GRID
      IMPORTING E_ROW E_COLUMN.
  ENDCLASS.                    "LCL_EVENT_RECEIVER DEFINITION

*----------------------------------------------------------------------*
*       CLASS LCL_EVENT_RECEIVER IMPLEMENTATION
*----------------------------------------------------------------------*
*     * 双击方法实现
*----------------------------------------------------------------------*
  CLASS LCL_EVENT_RECEIVER IMPLEMENTATION.
    METHOD HANDLE_DOUBLE_CLICK.
      PERFORM GETRECORD USING E_ROW-INDEX E_COLUMN-FIELDNAME.
    ENDMETHOD.                    "HANDLE_DOUBLE_CLICK
  ENDCLASS.                    "LCL_EVENT_RECEIVER IMPLEMENTATION

*&---------------------------------------------------------------------*
*&      Form  GETRECORD
*&---------------------------------------------------------------------*
*       具体事件
*----------------------------------------------------------------------*
  FORM GETRECORD USING E_ROW-INDEX E_COLUMN-FIELDNAME.
    READ TABLE IT_SFLIGHT INDEX E_ROW-INDEX.
*将行列等信息合并到字符串
    DATA: MSG(100).
    CONCATENATE '行:' E_ROW-INDEX '列名:' E_COLUMN-FIELDNAME INTO MSG.
    CONCATENATE S1 ' CONNID:' IT_SFLIGHT-CONNID INTO MSG.
    CONCATENATE S1 ' CARRID:' IT_SFLIGHT-CARRID INTO MSG.
    MESSAGE MSG TYPE 'I'.
  ENDFORM.                    "GETRECORD

   然后在ZALV_OO里面刷新ALV前加上此事件：   

CREATE OBJECT EVENT_RECEIVER.
   SET HANDLER EVENT_RECEIVER->HANDLE_DOUBLE_CLICK FOR GR_ALVGRID.

   如下图：