I am trying to make a widget-style application in Python, and I have tried searching around but I have not found a GUI toolkit that allows you to hide borders and remove the window background (fully transparent, only content rendered).

Is there a *Python GUI toolkit* with the following features?:

* No window borders.
* Completely transparent background.
* Non-OS specific GUI control rendering (custom bitmaps, fonts, etc).
* Event Detection (click, keyboard, etc)
* Window Management (always on top, steal focus, etc)