ALV screen input option learning

REPORT Program structure

1. Data statement
2. Select the settings of the screen
3. initialization
4. Select screen processing
5. The main program
6. Post execution processing （ Subroutines ）

REPORT The program name
NO STANDARD PAGE HEADING
LINE-SIZE col
LINE-COUNT n(m)
Each page of the form output is generated by n That's ok , Among them m Row as footer ;
MESSAGE-ID mid
Message object
DEFINING DATABASE ldb
Use logical database , Automatically generate

Data definition ——Tables sentence

The basic format
TABLES dbtab.
Dbtab Refer to ABAP A database object of the dictionary , It can be a transparent table , View and structure .
The function of this statement is to declare a table workspace , Be similar to C In language STRUCTURE
This table workspace consists of multiple fields , Its name , The type and dbtab The fields of are exactly the same
ABAP The type of the field in the dictionary object is automatically converted to ABAP The type of program ;
Table workspace is usually a global variable .

Data definition ——TYPES sentence

1.TYPE typ.
2.TYPE type(len).
3.TYPE:BEGIN OF structype
…
END OF structype.
4. TYPE itabtype {TYPE tabking OF linetype|like tabkind OF lineobj}[WITH [UNIQUE|NON-UNIQUE] keydef] [INITIAL SIZE n].
5. TYPES itabtype TYPE RANGE OF type.
TYPES itabtype LIKE RANGE OF f.

##. Data definition +DATA sentence

1. Define a variable of a simple type
2. Define an inner table
3. Define a shared data area
For external subroutine calls

Data definition —— Define the input screen

use SELECTION-SCREEN Statement to define the input screen

1. Generate blank columns
grammar : SELECTION SKIP []
Case study
SELECT-SCREEN SKIP 2.
Generate two blank columns

2. Create a bottom line
grammar ： SELCTION-SCREEN ULINE /(length)
Case study ：
SELECTION-SCREEN ULINE /10(30).
From 10 The lattice begins to produce a length 30 Bottom line

3. Print notes
grammar ：SELECTION-SCREEN COMMENT /(length)
Example:
REMARK = ‘Pls enter your name’.
SELECTION-SCREEN COMMENT /10()
REMARK.

4. Enter several data items in the same column
grammar ：
SELECTION-SCREEN BEGIN OF LINE.
…
SELECTION-SCREEN END OF LINE.
Case study ：
SELECTION-SCREEN BEGIN OF LINE.
SELECTION-SCREEN POSITION 20.
PARAMETERS NAME(10).
SELECTION-SCREEN POSITION 40.
PARAMETERS BIRTH TYPE D.
SELECTION-SCREEN END OF LINE.
stay 20 Grid input NAME Content ,40 Grid input ,BIRTH The content of

PARAMETERS sentence

PARAMETERS Is the basic input command , Be similar to BASIC Of INPUT command , But you cannot use floating-point format
grammar ：
PARAMETERS

[DEFAULT ] [LOWER CASE]
[OBLIGATORY] [AS CHECKBOX]
[RADIOBUTTON GROUP ]

Case study ：
PARAMETER : NAME(8),
AGE TYPE I,
BIRTH TYPE D.
Execution results

The date input format is MM/DD/YY,MM/DD/YY,MMDDYY or MMDDYYYY, Such as the input 020165 Express 1965 year 02 month 01 Japan
The date input range is 1950 to 2049 year

1.DEFAULT Set the preset value entered ,
Case study
PARAMETERS: COMPANY(20) DEFAULT “DELTA”,
BIRTH TYPE D DEFAULT “19650201”\

2.LOWER CASE
ABAP The default is to automatically convert the string input value to uppercase , Adding this parameter will turn the input content into lowercase

3.OBLIGATORY
Mandatory input , Adding this parameter will require the user to enter in this line

4.AS CHECKBOX
Input CHECKBOX The format of （ That is, the format of the check box ）
Example:
PARAMETERS: TAX AS CHECKBOX DEFAULT ‘X’.
NTD AS CHECKBOX
Execution results

5.RADIOBUTTON GROUP Click box mode
Input RADIO BUTTON GROUP The way
Example：
PARAMETERS:BOY RADIOBUTTON GROUP SEX DEFAULT ‘X’,
GIRL RADIOBUTTON GROUP SEX.

SELECT-OPTIONS sentence

SELECTION-OPTIONS The value entered is actually placed in internal table Medium , The Internal table There are four options
Namely ：SIGN,OPTION,LOW,HIGH…
Condition screening , Inspection conditions , Input screen assignment , Input condition Rear can cooperate SELECT Command from TABLE Read qualified data ,
To execute or put directly into Internal Table in , The condition has four parameters ：

1. SIGN:
   I : Table the data matching the filter criteria
   E : Table data that does not meet the filter criteria

2. OPTION: Condition symbol for comparison
   EQ( be equal to ),NE( It's not equal to ),GT( Greater than ),LE( Less than ),CP（ contain ）,NP( It doesn't contain )

3.LOW： minimum value
4.HIGH： Maximum

grammar ：
SELECTION-OPTIONS FOR

Example：
TABLES SPFLI.
SELECTION-OPTIONS AIRLINE FOR SPFLI-CONNID.

Save the input value of the condition into AIRLINE, And choose SPFLI Medium CONNID Options
Execution results ：

Condition input selection screen

1. since Table Select the
Press the country arrow on the right of the entry , hand over