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LDA Syntax
Caution
If the EXTERNAL; command option is used, the called routine must not attempt to
read from or write to the terminal.
CALL
The value of the System Data item GLB.PARAM is used as an argument to this process.
GLB.PARAM is also used to return data, as described previously for the data name 2 value.
DDDD DDD DDD DDDDDD4
literal 1
The name of your function (routine), up to 18 characters long.
literal 2
An alphanumeric Literal value of up to 18 characters containing the DOS pathname of your
DLL. In cases where the DLL pathname is longer than 18 characters, open a DOS session
and execute the following DOS command to associate the long path with a drive letter,
before executing this LINC command. For example:
If literal 2 does not include a period (.) then LDA will automatically append the suffix
‘‘.DLL’’. Because the period character causes an error in an MCP based COBOL compile,
you should leave the addition of the ‘‘.DLL’’ suffix to LDA. For example:
willbeconvertedinLDARunTimeto:
Note: The GLB.PARAM parameter is a character buffer. Numeric fields (like alpha
fields) can be passed by using the ATTACH; Logic command or the DETACH;
Logic command to add or remove them from GLB.PARAM, respectively.
Using the CALL; Command in LDA
The CALL; command provides an interface to non-LINC routines that are held in a Dynamic
Link Library (DLL). It is your responsibility to ensure that the DLL being called exists.
Each CALL to the same DLL will cause the DLL to be loaded; therefore, do not assume that
values set within the DLL in a previous CALL; of the Library will be retained for the current
CALL;.
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