call x"AF" using set-bit-pairs enable-esc-and-f1
这句如何解释啊.
刚学,不的入门.请教达人.
书看了几天,觉得太瞒了. 找了一个例子.
想跟书对应起来看.
呵呵, 第一句就难住了哈.
****************************************************************
* This program assumes that the default configuration has been *
* selected using Adiscf. *
****************************************************************
special-names.
cursor is cursor-position
crt status is key-status.
data division.
working-storage section.
**************************************************
* Parameters to be used for the x"AF" calls.
**************************************************
01 set-bit-pairs pic 9(2) comp-x value 1.
01 get-single-character pic 9(2) comp-x value 26.
01 enable-esc-and-f1.
03 filler pic 9(2) comp-x value 1.
03 filler pic x value "1".
03 filler pic 9(2) comp-x value 0.
03 filler pic 9(2) comp-x value 2.
01 disable-all-other-user-keys.
03 filler pic 9(2) comp-x value 0.
03 filler pic x value "1".
03 filler pic 9(2) comp-x value 2.
03 filler pic 9(2) comp-x value 126.
01 enable-slash-key.
03 filler pic 9(2) comp-x value 1.
03 filler pic x value "3".
03 filler pic x value "/".
03 filler pic 9(2) comp-x value 1.
**************************************************
* Status returned after termination of an ACCEPT.
**************************************************
01 key-status.
03 key-type pic x.
03 key-code-1 pic 9(2) comp-x.
03 key-code-1-x redefines key-code-1 pic x.
03 key-code-2 pic 9(2) comp-x.
**************************************************
* Cursor-Position is returned by ADIS containing
* the position of the cursor when the ACCEPT was
* terminated.
***************************************************
01 cursor-position.
03 cursor-row pic 99.
03 cursor-column pic 99.
**************************************************
* Work areas used by the program.
**************************************************
01 work-areas.
03 wa-name pic x(30).
03 wa-address-line-1 pic x(40).
03 wa-address-line-2 pic x(40).
03 wa-address-line-3 pic x(40).
03 wa-address-line-4 pic x(40).
03 wa-age pic 999 value 0.
01 exit-flag pic 9(2) comp-x value 0.
**************************************************
* Screen Section.
**************************************************
screen section.
01 main-screen.
03 blank screen.
03 line 2 column 27
value "Typical Data Entry Screen".
03 line 3 column 27
value "-------------------------".
03 line 5 column 1 value "name [".
03 pic x(30) using wa-name highlight prompt " ".
03 value "]".
03 line 7 column 1 value "address [".
03 pic x(40) using wa-address-line-1 highlight prompt " ".
03 value "]".
03 line 8 column 1 value " [".
03 pic x(40) using wa-address-line-2 highlight prompt " ".
03 value "]".
03 line 9 column 1 value " [".
03 pic x(40) using wa-address-line-3 highlight prompt " ".
03 value "]".
03 line 10 column 1 value " [".
03 pic x(40) using wa-address-line-4 highlight prompt " ".
03 value "]".
03 line 12 column 1 value "age [".
03 pic zz9 using wa-age highlight prompt " ".
03 value "]".
03 line 20 column 1 value
"---------------------
- "-----------------------".
03 line 21 column 1 value "f1" highlight.
03 value "=".
03 value "/h" highlight.
03 value "elp".
03 column 75 value "esc" highlight.
03 value "ape".
01 help-screen.
03 blank screen.
03 line 1 column 34 value "Help Screen".
03 line + 1 column 34 value "-----------".
03 line 4 value "escape" highlight.
03 value " Quit this program.".
03 line 6 column 1 value "f1 or /h" highlight.
03 value " View this help screen.".
03 line 8 column 1
value "Use the cursor keys to move around ".
03 value "the fields on the screen.".
03 value " Pressing enter".
03 line + 1 column 1 value "accepts the data ".
03 value "and presents a new blank form to fill in.".
03 line 24 column 25
value "Press any key to continue ...".
**************************************************
* Procedure Division.
**************************************************
procedure division.
entry-point section.
* First we want to ensure that the keys are enabled as we want
* them. Enable the Escape and F1 keys.
call x"AF" using set-bit-pairs
enable-esc-and-f1
* disable every other user function key.
call x"AF" using set-bit-pairs
disable-all-other-user-keys
* set up "/" key to act as a function key and terminate
* the ACCEPT operation.
call x"AF" using set-bit-pairs
enable-slash-key
* Now ensure that the cursor position will be returned when an
* ACCEPT is terminated. Setting to row 1, column 1 will ensure
* that the cursor will be initially positioned at the start of
* the first field.
move 1 to cursor-row
move 1 to cursor-column
* Loop until the Escape key is pressed.
perform until exit-flag = 1
display main-screen
accept main-screen
evaluate key-type
when "0"
* The ACCEPT operation terminated normally; that is the Enter key
* was pressed. In this case, we simply blank out the work areas
* and restart in the first field.
initialize work-areas
move 1 to cursor-row
move 1 to cursor-column
when "1"
* A user function key has been pressed. This will either be
* Escape or F1 as all others have been disabled.
if key-code-1 = 0
* Escape has been pressed, so we wish to leave the program.
move 1 to exit-flag
else
* F1 has been pressed so display the help screen.
perform display-help-screen
end-if
when "3"
* A data key has terminated the ACCEPT operation. It must be "/"
* as no other keys have been enabled to do this. Now get the
* next character to see if "H" or "h" has been pressed.
call x"AF" using get-single-character
key-status
if key-type = "3" and
(key-code-1-x = "h" or
key-code-1-x = "H")
perform display-help-screen
end-if
end-evaluate
end-perform
stop run.
display-help-screen section.
* Display the help screen and then wait for a key to be pressed.
display help-screen
call x"AF" using get-single-character
key-status.
[解决办法]
mark！
[解决办法]
这是某种脚本语言吧，未知。
似乎set-bit-pairs、enable-esc-and-f1都是函数名。
[解决办法]
啊，我居然连cobol语言都不认识，惭愧。以后自我评价要降低一些了。:)
------解决方案--------------------
程序没拷全。环境部没了。
special-names.
cursor is cursor-position
crt status is key-status.
定义一个光标，光标状态存在key-status中
[解决办法]
数据部的working-storage section中定义了一些中间变量。
working-storage section中定义了屏幕输出的形式。包括一个主屏幕区和一个帮助屏幕区
procedure division后是过程部，主要功能是控制屏幕输出。