socket in thread error!

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Dear everybody!

now I'm using socket in thread!

in the thread:
//////////////////

if (!tcpSocket.setSocketDescriptor(socketDescriptor))
{
emit error(tcpSocket.error());
return;
}

tcpSocket.waitForReadyRead();

QByteArray Mark = tcpSocket.read(10);

//////////////////
when the program was ran the error is reported!

cannot send events to objects owned by a different thread!

when I remove the "tcpSocket.waitForReadyRead();",the error isn't appear,but I cannot get any data form socket!