Xref:	news2.mv.net comp.os.msdos.djgpp:3678
From:	Roland Exler <R DOT Exler AT jk DOT uni-linz DOT ac DOT at>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: more sizeof questions
Date:	Fri, 10 May 1996 07:50:57 -0700
Organization:	Institute for el. Measurement, University of Linz, Austria
Lines:	34
Message-ID:	<319357D1.9FD@jk.uni-linz.ac.at>
References:	<199605090048 DOT UAA09442 AT eelab DOT newpaltz DOT edu>
NNTP-Posting-Host:	sensor4.emt.uni-linz.ac.at
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

John Fortin wrote:
> typedef unsigned char           BYTE;
> typedef unsigned short  WORD;
> typedef unsigned long           DWORD;
> 
> typedef struct
> {
>     DWORD       VESASignature;                  4
>     WORD        VESAVersion;                            2
>     DWORD       OEMStringPointer;               4
>     DWORD       Capabilities;                   4
>     DWORD       VideoModePointer;               4
>     WORD        TotalMemory;                    2
>     BYTE        Info[236];                                      236
> }       _VGAInfoBlock;                             =      256 bytes
> 
> John E. Fortin
> fortin44 AT eelab DOT newpaltz DOT edu

Each element of the structure will be aligned, so 2 bytes will be padded after 
VESAVersion and 2 after TotalMemory which gives 260 instead of 256!

Try  __attribute__ ((packed)) or #pragma pack(1) as some previous posts has 
shown.

Roland

+---------------------------------------+---------------------------+
I Roland Exler                          I EMAIL:                    I
I Universitaet Linz                     I R DOT Exler AT jk DOT uni-linz DOT ac DOT at I
I Institut fuer Elektrische Messtechnik I                           I
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