IBM AS/400 manual Examples of Using Bindable APIs, Calling a Graphics Routine

Calling a Graphics Routine

You

access ILE

bindable

APIs

using

the

same call

mechanisms

used

by

to

call

procedures,

that

is,

the

CALLP

operation

or

the

CALLB

operation.

returns

a

value

and

you

want

to

use

it,

call

the

API

in an expressio

information

required

to define

a

prototype for

an

API

see

the

descr

in

theSystem

API

Reference. Figure 72

shows

a

sample

'call' to

a

bindable API

D CEExxxx

PR

EXTPROC('CEExxxx')

D

parm1 ...

D ...

C

CALLP

CEExxxx( parm1 : parm2 : ... :

parmn : feedback)

or

C

CALLB

'CEExxxx'

C

PARM

parm1

C

PARM

parm2

...

C

PARM

parmn

C

PARM

feedback

Figure

72.

Sample Call Syntax for ILE Bindable APIs

where

¹ CEExxxx is the name of the bindable API

¹parm1, parm2, ...n parmare omissible or required parameters passed to

returned from the called API.

¹feedback is an omissible feedback code that indicates the result API.

Note: Bindable APIs cannot be used if DFTACTGRP(*YES) is specified on the CRTBNDRPG command.

For more information on bindable APIs, Systemrefer APIto Referencethe .

Examples of Using Bindable APIs

For examples of using bindable APIs, see:

¹ “Sample Service Program” on page 94, for an example of using CEEDOD

¹“Managing Your Own Heap Using ILE Bindable APIs” on page 119. for a

example of using CEEGTST, CEEFRST, and CEECZST.

¹ “Using a Condition Handler” on page 238, for an example of using CEEHD and CEEHDLU.

¹“Using Cancel Handlers” on page 244, for an example of using CEERTX a

CEEUTX.

Calling a Graphics Routine

ILE RPG supports the use of the CALL or		CALLP	operation to	call	OS/400
Graphics, which includes the Graphical Data Display, Managerset (GDDMof
graphics primitives for drawing	pictures),	and	Presentation	Graphics		Rout
of business charting routines).	Factor 2	must	contain the	literal	or	name

'GDDM' (not a variable). Use the PLIST and PARM operations to pass the parameters:

156 ILE RPG for AS/400 Programmer's Guide