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From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject: Re: Tkinter: winfo_screenmmwidth discussion
Date: Tue, 26 Nov 2013 17:55:52 -0500
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Xref: csiph.com comp.lang.python:60544

On Tue, 26 Nov 2013 14:13:57 -0800 (PST), josefg@gmail.com declaimed the
following:

>I am currently using Windows 7 Sp1, Tkinter 8.5, Python 2.7.4 on a laptop with no attached monitor. I am attempting to use winfo_screenmmwidth, but the returned value is incorrect. Specs state 280 mm. Physical measurement is 275 mm. EDID states 280 mm. Tkinter's winfo_screenmmwidth returns 361 mm. I don't have very much tkinter experience, please bear with me.
>
	Windows systems used to be quite lax on monitor size... Two monitors of
physically different sizes having the same pixel dimensions could possibly
report as being the same width. Especially if one is not using 100% for
text size and for DPI setting.

	My current monitor is 20.5 inches across (by steel tape measure), but
Windows defaults to 96DPI... Which comes to a 20 inch width when using
1920x1200 (native mode). The real resolution is 93.66DPI (while my previous
computer ran a clean 100DPI <G>)




-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
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