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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: How to get information of a tip created by x-show-tip
Date: Sat, 19 Jan 2019 09:22:07 +0200
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To: "Feng Shu" <tumashu@163.com>
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> From: "Feng Shu" <tumashu@163.com>
> Date: Sat, 19 Jan 2019 12:29:33 +0800
> 
> I want to get a tip's information created by x-show-tip,  for example: width, height, x and y
> 
> but I fail to find the way, anyone can help me?
> 
> by the way, is a tip a window or a frame?

A tooltip is a frame, when Emacs creates it itself; in that case, you
should be able to find the values in tooltip-frame-parameters.  But
with some toolkits, notably with GTK, the tooltip is by default
produced by the toolkit, and in that case I think the settings are in
the toolkit configuration files, out of Emacs control.