9 111 GET_HELP

LANSA Technical

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9.111 GET_HELP

Gets a list of help text for a specified field, function or process.

Þ This is a Specialized Built-In Function for use in a Development Environment only.

For use with

LANSA for i	YES
Visual LANSA for Windows	YES
Visual LANSA for Linux	NO

Arguments

No	Type	Req/ Opt	Description	Min Len	Max Len	Min Dec	Max Dec
1	A	Req	Object name The name of a field, function or process.	1	10
2	A	Req	Object extension name If the object type is a function then this value should contain the name of the process that the function is defined in. If the object type is not a function then this value should be blank.	1	10
3	A	Req	Object type Values: DF - Field PD - Process PF - Function	2	2

Return Values

Type

Req/ Opt

Description

Min Len

Max Len

Min Dec

Max Dec

Req

Working list to contain help text.

List must not be more than:
32767 entries in Windows
9999 entries on IBM i.

The calling RDML function must provide a working list with an aggregate entry length of exactly 77 bytes.

Each returned list entry is formatted as follows:

Bytes 1-77: Help Text

Req

Return code

OK = list returned partially or completely filled with help text for this object No more help text exists for this object.

OV = list returned completely filled, but more help text than could fit in the list exist. Typically used to indicate "more" functions in page at a time style list displays.

ER = argument details are invalid or an authority problem has occurred.

In case of "ER" return code error message(s) are issued automatically.

Example

A user wants to retrieve the help text of a specific object and display it without the use of the HELP key.

********* Define arguments and lists
DEFINE FIELD(#OBJNAM) TYPE(*CHAR) LENGTH(10)
DEFINE FIELD(#OBJEXT) TYPE(*CHAR) LENGTH(10)
DEFINE FIELD(#OBJTYP) TYPE(*CHAR) LENGTH(2)
DEFINE FIELD(#HLPTXT) TYPE(*CHAR) LENGTH(77)
DEFINE FIELD(#RETCOD) TYPE(*CHAR) LENGTH(2)
DEF_LIST NAME(#WKHLPL) FIELDS((#HLPTXT)) TYPE(*WORKING)
DEF_LIST NAME(#BWHLPL) FIELDS((#HLPTXT))
GROUP_BY NAME(#RQSOBJ) FIELDS((#OBJNAM) (#OBJEXT) (#OBJTYP))
GROUP_BY NAME(#DSPHLP) FIELDS((#OBJNAM) (#OBJEXT) (#OBJTYP))
********* Clear working and browse lists
BEGIN_LOOP
********* Request Object Name, Extension and Type
REQUEST FIELDS(#RQSOBJ)
CLR_LIST NAMED(#WKHLPL)
CLR_LIST NAMED(#BWHLPL)
********* Execute built-in-function - GET_HELP
USE BUILTIN(GET_HELP) WITH_ARGS(#OBJNAM #OBJEXT #OBJTYP)
TO_GET(#WKHLPL #RETCOD)
********* Help text was retrieved successfully
IF COND('#RETCOD *EQ ''OK''')
********* Move Help text from the working list to the browselist
SELECTLIST NAMED(#WKHLPL)
ADD_ENTRY TO_LIST(#BWHLPL)
ENDSELECT
********* Allow Help text to be reviewed for the specified object
DISPLAY FIELDS((#DSPHLP)) BROWSELIST(#BWHLPL)
********* Working list overflowed, more help text to retrieve
ELSE
IF COND('#RETCOD *EQ ''OV''')
MESSAGE MSGTXT('List not big enough to fit all help text')
********* GET_HELP failed with errors, report error
ELSE
MESSAGE MSGTXT('GET_HELP failed with errors, try again')
ENDIF
ENDIF
END_LOOP

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