Widgets placed on Design Window cannot be destroyed

[the-pythonist]

Widgets placed on the Design Window cannot be destroyed if a mistake is made. The solution which seems unreasonable is having to close the who GUI one is working on and start all over again. You make a mistake, you start over; this should be fixed.

The widget tree window that contains a list of every widget created on the design window can solve this. It should have a feature that allows you right click on a widget listed and delete it - and probably perform some other options.