# Create dialog window without top bar

I made a nice little interface for the Pi to switch GPIOs by clicking a button. I use CreateDialog for it. In Linux I can, after having created the window, click on the top bar and then chose undecorate. That is then exactly what I want. Is there a way for CreateDialog to issue a window undecorated (without the top bar)? Or is there an alternative to CreateDialog?

CreateDialog[
Row[{"Hello world ghjdghjdghjdghjdghjdghj\t", DefaultButton[]}],
WindowTitle -> "no need for it"]


CreateDialog[