Problem with custom container widget

[MrGarbage]

Hi,

QT 4.3 on windows.

I have created a custom widget for use in QT Designer.
This is intended as a collapsible groupbox. The .ui form
previews and operates correctly in QT Designer. An image is attached.

The plug-in also correctly appears in mt QT Designer toolbox
and I can move it onto a form, preview the form and that works.

This is intended to be a container widget in that controls may
be moved onto it and placed in a layout. I am returning true
in my isContainer() routine.

My widget will allow me to place items on it. Radio buttons
for example. I then select the radio buttons and apply a
layout. The red rectangle appears. I then resize with the
mouse and as soon as I let go of the selection QT Designer
crashes.

It's happy with the radio buttons if I don't attempt to
place them in their own layout.

I have tried using both a QWidget and a QFrame as my container
portion of my widget. Both yield the same results.

Any ideas?

Thank you

Mark