Sending / Receiving of byte arrays

[Bogdan Lotko]

Hello,

I have to pass the structure of bit-fields over the D-Bus connection

e.g.

struct XXX
{
    uint state1 : 2;
    ...
    uint stateN : 5:
}

I thought (because of possible endianity) the ByteArray will be the best 
transport for it.

So I'd like to use the

char  buff[n];

and cast it to the struct XXX pointer

XXX *xxxStructPtr = ((XXX *)(buff));

xxxStructPtr->state1 = myStateEnum;
...

After filling the buffer I have to pass it to the QByteArray, I thought 
the fromRawData(buff,n) will be most appropriate for it.

What I've been wondering, was if I can use the QByteArray directly as a 
"buffer", i.e to cast it to get the pointer to my XXX struct.

Or maybe there is a quite different solution for it?

Thanks for your help

bogdan






On 2/8/2012 21:53, Thiago Macieira wrote:
> On Wednesday, 8 de February de 2012 21.34.45, Bogdan Lotko wrote:
>> I am not sure if the QByteArray will allow such a cast, so I'll probably
>> use the buffer as in the example.
> Or you could just find out if it does and then decide whether to use it using
> actual facts.
>
> Since there was no mention of "cast" in the previous conversation, "such a
> cast" doesn't make sense. It is not referring to a cast discussed in the past.
> If you had said what you wanted to do, I could have already answered you.
>
>
>
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> dbus at lists.freedesktop.org
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-- 

*Bogdan Lotko*

b.lotko at chello.at
Phone: +43 1 2852458
Mobile: +43 676 6615012
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