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Re: master 57d2f24: * lisp/frame.el (make-frame-on-monitor): New command

From: Juri Linkov
Subject: Re: master 57d2f24: * lisp/frame.el (make-frame-on-monitor): New command. (Bug#34516)
Date: Thu, 28 Feb 2019 22:40:15 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (x86_64-pc-linux-gnu)

> If Iʼve understood correctly, you want to create a frame that covers
> the entire workarea of the chosen monitor. Would it not work to
> specify the x,y of the top corner plus (fullscreen . maximized) rather
> than specifying the width and height explicitly? That will do the
> toolbar/titlebar/scrollbar subtractions for you (I haven't tested this).

I already have this for personal customization in ~/.emacs:

  (add-hook 'after-make-frame-functions 'toggle-frame-maximized)
  (advice-add 'make-frame-on-monitor :around
              (lambda (orig-fun monitor &optional display parameters)
                (funcall orig-fun monitor display '((undecorated . t))))
              '((name . make-frame-on-monitor-undecorated)))

But my intention was to implement a general command that would make
a new frame according to the physical monitor attributes returned by

I have no idea why display-monitor-attributes-list returns
workarea that doesn't fit into the created frame on macOS.

While testing it without customization in GDK on GNU/Linux,
I see that the created frames cover the whole physical monitor,
including toolbar/titlebar/scrollbar.

Maybe there is still an issue in ns-display-monitor-attributes-list?

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