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Article #6547

Re: An stupid question about Set assignation

#6547
From: Remy Lebeau (TeamB)
Date: Fri, 29 Apr 2005 18:47
38 lines
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"Francisco M. Marzoa" <fmmarzoa@softronica.org> wrote in message
news:42725621$1@newsgroups.borland.com...

> if I do something as:
>
> WFlags = [fCTS];
>
> Compiler gives me an error

Of course, because the compiler does not support that use of '[] brackets.
Your use of the '<<' operator is the correct way to go.

> I've used [] because I've been that when I change a property
> of this type on Builder's designer it creates an array like
> [fCTS, fTXEmpty, ...]

That is only for visual display, not for actual coding.  Also, Delphi pascal
does use '[]' brackets in certain Set operations, and the VCL itself is
largely written in Delphi, not C++.

> it seems this is not the right manner to assign a value to
> WFlags with '=' operator.

Correct.  The '=' operator is only used when assigning one Set to another,
not for assigning individual flags.  That is what the '<<' operator is for
instead.  For example:

    WaitFlags WFlags1;
    WaitFlags WFlags2;

    // you can use '<<' to assign multiple flags at one time
    WFlags1 << fCTS /* << fDSR << fRxFlag << etc... */;
    WFlags2 = WFlags1;



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Subject: Re: An stupid question about Set assignation
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