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Re: tooltip can be displayed outside the screen

From: Juri Linkov
Subject: Re: tooltip can be displayed outside the screen
Date: Fri, 16 Dec 2005 11:03:59 +0200
User-agent: Gnus/5.110004 (No Gnus v0.4) Emacs/22.0.50 (gnu/linux)

> Your changes are good.  However, this text has another problem:
>     ! The offset is the distance between the X position of the mouse and
>     ! the left border of the tooltip frame.  It must be chosen so that the
>     ! tooltip window doesn't contain the mouse when it pops up.
> If you use a bad value, and the tooltip window does contain the
> mouse, what happens?

Since I am not the author of the last sentence, I don't know what it was
intended to warn against.  I tried to use a bad value on X, and the
resulted effect is the mouse pointer covering part of the tooltip window.
Also moving the mouse causes flickering of the tooltip window.  I have no
idea how to describe this behavior in the doc string.

BTW, on non-toolkit X builds using tooltips on menu items completely
garbles them.  Most likely this is caused by garbage collection, and
displaying tooltips makes GC to occur sooner than when tooltips are

Juri Linkov

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