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  2. RPG400-L
  3. April 2009

Re: Confused about cycle-main procedure calls.

Vern Hamberg wrote:
Using a program call is easy to understand - it's just how it has always been. But I don't think I've thought of calling the main procedure of a program either using CALLB or using CALLP to a prototype with EXTPROC() specified - I hope I'm correct in that both are bound calls.

Yes, they're both bound calls. (As long as you don't specify ExtPgm or *JAVA, it's a bound call -- in fact, you don't even need ExtProc, bound calls are the default. You only need ExtProc if the procedure name doesn't match the prototype name.)

Is this new with 6.1, now that we can name a subprocedure as the entry procedure? Just curious.

No... this ability has existed since RPG IV was originally released in V3R1. In fact, subprocedures didn't exist until V3R2, so in V3R1/V3R6 the only way you could use ILE features in RPG was to call a main procedure.

Folks have referred to this as "calling a module" (which isn't really accurate, but it's commonly used).

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