QByteArray conversions/manipulation.... HOW TO DO IT?

[daemonna]

i got several questions regarding QByteArray conversion and manipulation...

1. how do i convert QByteArray to QBitArray and vice versa? following code should put bytearray to bitarray... is it OK? how it is other way? only change of operator <<?

QBitArray bita;
QByteArray byta;
QDataStream bytads(&byta, QIODevice::ReadWrite);
 
operator>>(bytads,bita);

QBitArray bita;
QByteArray byta;
QDataStream bytads(&byta, QIODevice::ReadWrite);

operator>>(bytads,bita);

To copy to clipboard, switch view to plain text mode 

2. how do I write/read bytearray from sharedmemory? following code should read 8 bytes form shared memory into bytearray... how to write it?

sharedmem.lock();
QByteArray memar=QByteArray((char*)sharedmem.constData(), 8);
sharedmem.unlock();

sharedmem.lock();
QByteArray memar=QByteArray((char*)sharedmem.constData(), 8);
sharedmem.unlock();

To copy to clipboard, switch view to plain text mode