Dear Everyone!
I want to create a Template Designer for a Multiframe player.
Here a multiframe means a multiple child window inside a main parent window.
In these frames I am playing different movies.

In a Template designer form there should be work area where I want to draw child window. A Template Designer having with multiple line edits & labels that shows the child window status (eg. its height, width, x & y loc) and command buttons for controlling the child widgets height width, x & y location as well as increment, decrement option, its relative position to its parent window or work area, height & width of a activated child.

A Button for dynamic creating child window (frames) upon a work area and a save button which saves the data into a database table.

For above, Which widget should I use to design the form and which widget choose to design the work area. And what a way I put child widget inside it and it display.