public property frame as WindowFrame:
Window frame mode.
WindowFrame.NATIVE_FRAME uses the operating-system frame and is the default. WindowFrame.KLYN_FRAME removes the OS decorations and lets the Klyn GUI library paint a default title bar and border. WindowFrame.NO_FRAME removes both OS and Klyn frames so only the root widget is rendered.
window = MainWindow("Custom chrome")
window.frame = WindowFrame.KLYN_FRAME
window.show()