> It's not straightforward, because whether the whole screen > is to be blanked or not changes the way the test window is created, > and yet the user needs the window up to guide where to put > the device on the screen. Hmmmm. Maybe open the "guide window", wait for space then close it and reopen the "measure window" in exactly the same spot? Or maybe just add a "non-interactive" mode that would skip all the options and just rely on the colorimeter to be properly attached to the screen.