ABAP报表程序流程，包含常用事件的顺序

ABAP编辑器中，coding的程序流程，如下：

1. *--------------------------------------------------------------------*
   
2. *DEFINE TYPE POOL
   
3. *--------------------------------------------------------------------*
   
4. TYPE-POOLS:SLIS,TRUXS.
   
5. 
   
6. *--------------------------------------------------------------------*
   
7. *DEFINE TABLES
   
8. *--------------------------------------------------------------------*
   
9. *TABLES:
   
10. 
    
11. *--------------------------------------------------------------------*
    
12. *DEFINE CONSTANTS
    
13. *--------------------------------------------------------------------*
    
14. CONSTANTS: CO_BWART_STOCK_TRANS TYPE MSEG-BWART VALUE '311'.
    
15. 
    
16. *--------------------------------------------------------------------*
    
17. *DEFINE INTERNAL TABLES & VARIANTS
    
18. *--------------------------------------------------------------------*
    
19. 
    
20. *--------------------------------------------------------------------*
    
21. *DEFINE RANGES
    
22. *--------------------------------------------------------------------*
    
23. 
    
24. *--------------------------------------------------------------------*
    
25. *PARAMETERS
    
26. *--------------------------------------------------------------------*
    
27. SELECTION-SCREEN BEGIN OF BLOCK BLK_010 WITH FRAME TITLE TEXT-001.
    
28. PARAMETERS:.
    
29. SELECTION-SCREEN END OF BLOCK BLK_010.
    
30. 
    
31. *--------------------------------------------------------------------*
    
32. *INITIALIZATION
    
33. *--------------------------------------------------------------------*
    
34. INITIALIZATION.
    
35.   PERFORM INIT_PARAMETERS.
    
36. 
    
37. *--------------------------------------------------------------------*
    
38. *AT SELECTION-SCREEN OUTPUT
    
39. *--------------------------------------------------------------------*
    
40. AT SELECTION-SCREEN OUTPUT.
    
41. 
    
42. *--------------------------------------------------------------------*
    
43. *AT SELECTION-SCREEN
    
44. *--------------------------------------------------------------------*
    
45. AT SELECTION-SCREEN.
    
46. 
    
47. *--------------------------------------------------------------------*
    
48. *AT SELECTION-SCREEN ON VALUE-REQUEST
    
49. *--------------------------------------------------------------------*
    
50. AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_FILE.
    
51.   CALL FUNCTION 'KD_GET_FILENAME_ON_F4'
    
52.    EXPORTING
    
53. *     PROGRAM_NAME        = SYST-REPID
    
54. *     DYNPRO_NUMBER       = SYST-DYNNR
    
55. *     FIELD_NAME          = ' '
    
56.      STATIC              = 'X'
    
57. *     MASK                = ' '
    
58. *     FILEOPERATION       = 'R'
    
59. *     PATH                =
    
60.     CHANGING
    
61.       FILE_NAME           = P_FILE
    
62. *     LOCATION_FLAG       = 'P'
    
63. *   EXCEPTIONS
    
64. *     MASK_TOO_LONG       = 1
    
65. *     OTHERS              = 2
    
66.             .
    
67.   IF SY-SUBRC <> 0.
    
68. * Implement suitable error handling here
    
69.   ENDIF.
    
70. 
    
71. *--------------------------------------------------------------------*
    
72. *AT SELECTION-SCREEN ON HELP-REQUEST
    
73. *--------------------------------------------------------------------*
    
74. 
    
75. *--------------------------------------------------------------------*
    
76. *START-OF-SELECTION
    
77. *--------------------------------------------------------------------*
    
78. START-OF-SELECTION.
    
79. 
    
80. *--------------------------------------------------------------------*
    
81. *END-OF-SELECTION
    
82. *--------------------------------------------------------------------*
    
83. END-OF-SELECTION.

复制代码

我们程序是按照事件来执行程序块的，程序事件的执行顺序就是上面代码中事件的顺序，我们要养成一个良好的Coding习惯，两者顺序要保持一致，一般基础性面试会问到。

对我这样的小白，要是能在每个section中加中文注释会更好些。比如【DEFINE TABLE】涉及到的外表。

不过还是感谢楼主给出报表的事件流，受教了。