PUBLIC TYPEs

[Pere Mora]

Hello everyone

I've just started with PB 3.5, moving from Microsoft's Basic 7.1
I have a large program, with multiple modules (units).
Is it possible to share user defined variables between units and the main program?

I mean something like:

in Main:

TYPE TipVar
Int1 AS INTEGER
Arr(12) AS LONG
END TYPE
DIM RegVar AS TipVar
PUBLIC RegVar
...

in unit:

EXTERNAL RegVar
?RegVar.Arr(2)
...

Thanks


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[Pere Mora]

Clarification:

I know I can pass the user-defined variable as a parameter to any SUB in the unit, but I want to respect to the maximum the original QB code, and I don't want to pass the variable to every SUB in the unit, so I want to share it using PUBLIC and EXTERNAL.

Thanks


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[Lance Edmonds]

Absolutely, although you'll have to include the UDT definition in the UNIT code too. The best way is to put the TYPE/END TYPE statement block into a separate source file, and $INCLUDE it into each compilable source file.

Essentially, you use PUBLIC in your main code; and you can use either PUBLIC or EXTERNAL in your UNIT code.

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Lance
PowerBASIC Support
mailto:[email protected][email protected]</A>

[Pere Mora]

OK,Lance; thanks.

I had tried this but I didn't DIM the UDT in the unit (I just declared the TYPE), and the compiler raised an unresolved external; now it runs OK.


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Pere