Example Usage From Within R:BASE:
-- BEGIN Demo.rmd
-- Declare the functions to be used from the DLL
STDCALL function 'MultInt' ( Integer ) : Integer
STDCALL VOID 'LCaseByREF' (ptr TEXT (30))
STDCALL function 'LCaseByVAL (ptr TEXT (60)) : TEXT (60)
--Set somme variables for use
Set VAR vTEXT TEXT = 'RBASE TECHNOLOGIES'
SET VAR vINT INTEGER = 128
SET VAR v1 INTEGER = 0
-- OPTIONALLY CALL DLLOAD
SET VAR v1 = (DLLOAD('DemoLib.dll'))
IF v1 = 0 THEN
PAUSE 2 USING 'DemoLib.dll NOT LOADED.. EXITING'
RETURN
ENDIF
SET VAR V1 = (dlcall('demolib.dll', 'changecase', vtext))
{ The Value for v1 will be null because ChangeCase is a procedure and doesn't
RETURN A RESULT, but the value of vTEXT which is passed as a POINTER has been
changed to 'rbase technologies'}
SET VAR v1 = (DLCALL('demolib.dll', 'MultInt', vINT))
--The value for v1 will be 256 the value returned from the function.
-- running the following against RRBYW20
SELECT (DLCALL('demolib.dll','lcasebyval', Company))=60 FROM +
Customer WHERE LIMIT = 2
{Yields the following output:
(DLCALL('demolib.dll','lcasebyval', Company)
------------------------------------------------------------
computer warehouse - ii
microtech university - i
}
SELECT ((ICAP2((DLCALL('demolib.dll','lcasebyval', Company))))) = 60 +
FROM Customer WHERE LIMIT = 2
{Yields the following otput:
((ICAP (DLCALL('demolib.dll','lcasebyval',
------------------------------------------------------------
Computer Warehouse - Ii
Microtech University - I
}
-- Optionally CALL DLFREE
SET VAR v1 = (DLFREE('DemoLib.dll'))
-- END Demo.rmd
