How to make a form on top of all windows?

Question

C++ / C#

How to make a form on top of all application windows. Don't suggest using the TopMost flag. I need on top of all the basic windows in the application, but that the dialog ones are higher and not like the topmost windows of other applications.
Z.Y.Zh. Sorry for the mess.

Answer 1

I would advise you to look in the direction of the Z-Order of the displayed windows, but I'm afraid that I will have to climb into the WinAPI