"James Nicholls" <[EMAIL PROTECTED]> wrote in message
news:45103@palm-dev-forum...
>
> Hi all, I've got a structure defined in CodeWarrior C++ as:
>
> struct T
> {
> UInt32 f1 : 24;
> UInt8 f2;
> };
>
> This structure is meant to treat the first three bytes of memory as a
unit
> and the following byte as another unit inside of a 4 byte word.
sizeof(T)
> == 6. WHY DOESN'T EQUAL 4!!??
In C, all the bitfield members need to be declared using bitfield
notation. Your structure defintion should say
struct T
{
UInt32 f1 : 24,
f2 : 8;
};
Your declaration had a UInt32 bitfield with 24 defined bits and 8
padding bits. This one actually defines names for all 32 bits, which is
what you want.
--
Ben Combee, [EMAIL PROTECTED]
Techwood Broadcasting Foundation, Austin Bureau
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
