QDatastream write data from unsigned char* buffer

Question

How can I write data from unsigned char* buffer to QDatastream. Threre are methods writeBytes and writeRawData. But they accept const char*. Can I use unsigned char* for it?

Jimmy · Accepted Answer · 2012-07-10 10:09:01Z

5

You can just cast to const char*

unsigned char array[] =  {1,2,3,4,5};
QByteArray ba;
QDataStream datastream(&ba,QIODevice::ReadWrite);
datastream.writeRawData((const char*) array,5);

answered Jul 10, 2012 at 10:09

Jimmy

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2 Comments

bossman Over a year ago

Wont it affect on data in buffer?

Jimmy Over a year ago

no, a pointer is just a memory address. the command above will copy the 5 bytes verbatim from that memory address. You need to be careful when you read those bytes out of the buffer that you cast the pointer back to an unsigned char.

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