Windows 10 own taskbar, is it possible?

Question

Windows

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Is it possible (not necessarily using UWP, any other technology is possible - but preferably not assembler :)) to make the program interface so that it is attached to the taskbar (or to the top of the screen), and other windows would change size based on him. That is, in terms of behavior one to one as a screw taskbar?

Answer 1

Create

Example