Re: Portability and re-defining datatypes

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#1298

From: Remy Lebeau (TeamB)
Date: Thu, 13 Sep 2007 00:08

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"Mike Collins" <its@TheBottomOfThePost> wrote in message
news:46e87087@newsgroups.borland.com...

> Actually, on careful examination, it appears to only be the
> BOOLEAN value that effect the system, leaving the orginal
> prototype as it is, and changing this to a DWORD, makes
> the whole system work.

BOOLEAN is defined in wtypes.h as follows:

    typedef boolean BOOLEAN;

However, 'boolean' is not a native data type.  It is a typedef in rpcndr.h:

    typedef unsigned char boolean;

Microsoft usually uses BOOL (in wtypes.h) instead of BOOLEAN for API
functions, though:

    typedef long BOOL;

So I'm assuming that since sizeof(BOOLEAN) is not the same as sizeof(BOOL),
the use of BOOLEAN instead of BOOL is probably throwing off the alignment of
the stack parameters, causing the error.


Gambit

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