保存文件弹出框-选择路径

DATA:GDF_PATH     TYPE STRING, "add by shikai.liao
     GDF_FILENAME TYPE STRING,
     GDF_FULLPATH TYPE STRING.

  DATA:LDF_PATH TYPE LOCALFILE.
  .
  "弹出路径框
  CLEAR: GDF_PATH,
         GDF_FILENAME,
         GDF_FULLPATH.
  PERFORM FRM_GET_PATH_038 CHANGING GDF_PATH GDF_FILENAME GDF_FULLPATH .
  IF GDF_FULLPATH IS INITIAL .
    MESSAGE '请选择要保存的文件夹和输入文件名' TYPE 'I'.
  ELSE.
    CLEAR LDF_PATH.
    MOVE GDF_FULLPATH TO LDF_PATH.

FORM FRM_GET_PATH_038 CHANGING:FU_PATH
                           FU_FILENAME
                           FU_FULLPATH  .


  CALL METHOD CL_GUI_FRONTEND_SERVICES=>FILE_SAVE_DIALOG
    EXPORTING
      WINDOW_TITLE              = 'Select Folder and Enter Filename to Save File'
      DEFAULT_EXTENSION         = 'xls' "'xlsx'
*     DEFAULT_FILE_NAME         =
*     WITH_ENCODING             =
      FILE_FILTER               = '*.xls' "'*.xlsx'
*     INITIAL_DIRECTORY         =
*     PROMPT_ON_OVERWRITE       = 'X'
    CHANGING
      FILENAME                  = FU_FILENAME
      PATH                      = FU_PATH
      FULLPATH                  = FU_FULLPATH
*     USER_ACTION               =
*     FILE_ENCODING             =
    EXCEPTIONS
      CNTL_ERROR                = 1
      ERROR_NO_GUI              = 2
      NOT_SUPPORTED_BY_GUI      = 3
      INVALID_DEFAULT_FILE_NAME = 4
      OTHERS                    = 5.
  IF SY-SUBRC <> 0.
*   Implement suitable error handling here
  ENDIF.

*   CALL METHOD CL_GUI_FRONTEND_SERVICES=>FILE_SAVE_DIALOG
*     EXPORTING
*       WINDOW_TITLE         = 'Select Folder to Save File'
*    CHANGING
*       SELECTED_FOLDER      = gdf_path
*     EXCEPTIONS
*       CNTL_ERROR           = 1
*       ERROR_NO_GUI         = 2
*       NOT_SUPPORTED_BY_GUI = 3
*       OTHERS               = 4.
*   IF SY-SUBRC <> 0.
*
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
*  ENDIF.


ENDFORM.                    " FRM_GET_PATH