Help with an OOT GUI block

Hi,

I have created an OOT block in Python which emulates a terminal/console.
It has a QLineEdit for keyboard input and a QTextEdit for display. The
keyboard input is displayed locally and is sent to an output message
port. An input message port displays the strings also.

The current Python code is in
https://github.com/duggabe/gr-console/blob/master/python/console.py
My test flowgraph is in
https://github.com/duggabe/gr-console/blob/master/examples/msg_test4.grc
Two different windows are created - one for the GRC 'msg_test4', and one
for the 'Console'
When it receives input data to display, I get an error:
QObject: Cannot create children for a parent that is in a different
thread.
(Parent is QTextDocument(0x2ae0658), parent's thread is
QThread(0x282a5b8), current thread is QThread(0x2b32be0)

Apparently I need to have the 'Console' window contained within the
'msg_test4' window, but I don't know how to do that.
I would appreciate any help you can give.

Best regards,
--
Barry Duggan KV4FV