Calls to a function OR procedure from ANY DLL must be DECLARED at Least ONCE in the session in which they will be referenced.
Two Calling Conventions are supported, using the STDCALL and CDECL Keyword in the Declaration.
STDCALL
Function Declaration using STDCALL:
STDCALL FUNCTION 'functionName' (PTR VARCHAR (SIZE), ....... ) : VARCHAR (SIZE)
STDCALL FUNCTION 'functionName' ALIAS 'functionAliasName' (PTR TEXT (SIZE), ....... ) : TEXT (SIZE)
Procedure Declaration using STDCALL:
STDCALL VOID FunctionOrProcedureThatHasNoReturnValue (PTR TEXT (SIZE))
Windows API Declaration using STDCALL:
STDCALL FUNCTION 'GetCurrentDirectoryA' ALIAS 'GetCurrentDir' (PTR TEXT, INTEGER ) : INTEGER
CDECL
Function Declaration using CDECL:
CDECL FUNCTION 'functionName' (INTEGER) : INTEGER
CDECL FUNCTION 'functionName' ALIAS 'functionAliasName' (PTR DOUBLE) : DOUBLE
Procedure Declaration using CDECL
CDECL VOID FunctionOrProcedureThatHasNoReturnValue (PTR TEXT (SIZE))
Important Notes:
•'SIZE' applies to TEXT and VARCHAR Data Types.
•Parameters in the Declaration are in the REVERSE order from the Actual Function or Procedure in the DLL.
•Parameters can be 0 to n Parameters of any legal R:BASE Data type.
•Function Names ARE CASE SENSITIVE in the Declaration ONLY.
•The Case must match the casing used in the DLL.
•Case is INSENSITIVE when used in DLCALL.
