Something like:
((void*)0)+dw
On Mon, Feb 22, 2010 at 1:30 AM, Jim Michaels <jmich...@yahoo.com> wrote:
>
>
> it's 32-bit windows 9x code, but the target is 64-bit, so I have to disable
> the 9x code.
> I found a workaround on the internet (great place to look for solutions):
> #if !defined(_WIN64)
> ...//win9x code
> #endif
>
>
> ________________________________
> From: Ozkan Sezer <seze...@gmail.com>
> To: Jim Michaels <jmich...@yahoo.com>
> Cc: mingw64 <mingw-w64-public@lists.sourceforge.net>
> Sent: Fri, February 19, 2010 1:28:02 AM
> Subject: Re: [Mingw-w64-public] x64 can't cast ptr to DWORD
>
> On Fri, Feb 19, 2010 at 11:25 AM, Jim Michaels <jmich...@yahoo.com> wrote:
> > after much difficulty trying to get subscribed to the list, here is my
> > question.
> >
> > #define CAST(x) reinterpret_cast<DWORD>( x )
> > or
> > #define CAST(x) (DWORD)( x )
> > ...
> > // All msdos data structures must be packed on a 1 byte boundary
> > #pragma pack (1)
> > struct {
> > DWORD StartingSector ;
> > WORD NumberOfSectors ;
> > DWORD pBuffer;
> > } ControlBlock;
> > #pragma pack ()
> > ...
> > ControlBlock.pBuffer = CAST(buffer) ;
> >
> > "dgeomlib.cpp:178: error: cast from 'unsigned char*' to 'DWORD' loses
> > precision"
> >
> > this only occurs on 64-bit target compiler.
> > how can I circumvent?
>
> Use DWORD_PTR instead.
>
> > or, how can I use ifdefs to disable this windows 9x code only for x64 target
> > (obviously the x64-output compiler must have some sort of #define?)?
> >
>
> #ifdef _WIN64 ... #endif should do?
>
> >
> > Jim Michaels
> > jmich...@yahoo.com(main)
> > JesusnJim.com (my site)
>
> --
> Ozkan
> I don't think it's going to fit in 32 bits.
>
>
>
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