Designer form creation very slow

[wysota]

I'd turn those 128 separate LED widgets into a single custom widget that draws the LEDs to avoid relayouting everything every time you change something. QTableView with a custom delegate might be a simple replacement for your LED widgets.

[MrGarbage]

Thank you for both replies, which essentially tell me what I already feared was true. The
design is not practical. This was my first QT complex form and I now understand quite a bit
more.

Thankfully it is not too late to change the design, and that is what I will do.

Mark