qa_int QABinaryMessage::readBinary( qa_bytes value, qa_int length )
value The buffer into which the data is read.
length The maximum number of bytes to read.
Reads a specified number of bytes starting from the unread portion of the QABinaryMessage instance's message body.
The total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
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