Unsolved Creating custom GUI Builder

[PavloPonomarov]

Hello,
I develop a custom GUI builder: toolbox, container for dynamically created elements, custom components and two-way binding to background logic. Such features as dynamic component size and alignment would probably be added later. Could you advice me any third party libraries that would simplify this task?

[jsulm]

@PavloPonomarov You could take a look at Qt Designer code