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winfo screenheight window
Returns a decimal string giving the height of window's screen, in pixels.
winfo screenmmheight window
Returns a decimal string giving the height of window's screen, in millimeters.
winfo screenmmwidth window
Returns a decimal string giving the width of window's screen, in millimeters.
winfo screenvisual window
Returns one of the following strings to indicate the default visual class for window's screen: directcolor, grayscale, pseudocolor, staticcolor, staticgray, or truecolor.
winfo screenwidth window
Returns a decimal string giving the width of window's screen, in pixels.