Hi,
OK the problem was alphaValue, I don't know how Apple handles it with an
external not Apple´s mouse, but override in NSScroller the mouseExited,
mouseEntered and set alphaValue to 1.0 all fixed
Davidap
El 13/4/21 a las 20:00, [email protected] escribió:
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Today's Topics:
1. Re: Scroller and not apple's mouse (Alex Zavatone)
2. Re: Scroller and not apple's mouse (Alex Zavatone)
----------------------------------------------------------------------
Message: 1
Date: Tue, 13 Apr 2021 08:44:01 -0500
From: Alex Zavatone <[email protected]>
To: Allan Odgaard <[email protected]>
Cc: [email protected]
Subject: Re: Scroller and not apple's mouse
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8
Please show your code. Otherwise, we have little to go on.
Sent from my iPhone
On Apr 13, 2021, at 2:41 AM, Allan Odgaard via Cocoa-dev
<[email protected]> wrote:
?Probably two things relevant here.
One is General in system preferences which look like this:

A Magic Mouse may count as a ?track pad? so if you have this setting to
automatic, the scrollers will only be shown when scrolling.
You can manually override the scroller setting:
https://developer.apple.com/documentation/appkit/nsscroller/1523591-scrollerstyle
The style it sounds like you prefer is NSScrollerStyleOverlay.
However, I would discourage you from changing this.
On 13 Apr 2021, at 9:24, IOS NACSPORT via Cocoa-dev wrote:
Hi,
I connect any non-Apple mouse, turn off the Apple mouse and the scroll shows,
in it I can?t change the background color. I used swift and macOS. Without
another mouse, only magic mouse I can change this color without problem.
Regards
El 12/4/21 a las 23:40, Jack Brindle escribi?:
What is the mouse, and is there any installed software involved that goes with
the mouse?
Jack
On Apr 12, 2021, at 12:30 AM, IOS NACSPORT via Cocoa-dev
<[email protected]> wrote:
Hi,
I don't kown is the correct place, In a NSScroller, when I conect the external
mouse, not apple's mouse, the scroll change and show always, the problem is
that I can't change its background color. How could it? or at least make it
clear.
Regards
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------------------------------
Message: 2
Date: Tue, 13 Apr 2021 08:44:45 -0500
From: Alex Zavatone <[email protected]>
To: Allan Odgaard <[email protected]>
Cc: [email protected]
Subject: Re: Scroller and not apple's mouse
Message-ID: <[email protected]>
Content-Type: text/plain; charset=utf-8
And WHICH non-Apple mice are you using?
Sent from my iPhone
On Apr 13, 2021, at 8:44 AM, Alex Zavatone <[email protected]> wrote:
?Please show your code. Otherwise, we have little to go on.
Sent from my iPhone
On Apr 13, 2021, at 2:41 AM, Allan Odgaard via Cocoa-dev
<[email protected]> wrote:
?Probably two things relevant here.
One is General in system preferences which look like this:

A Magic Mouse may count as a ?track pad? so if you have this setting to
automatic, the scrollers will only be shown when scrolling.
You can manually override the scroller setting:
https://developer.apple.com/documentation/appkit/nsscroller/1523591-scrollerstyle
The style it sounds like you prefer is NSScrollerStyleOverlay.
However, I would discourage you from changing this.
On 13 Apr 2021, at 9:24, IOS NACSPORT via Cocoa-dev wrote:
Hi,
I connect any non-Apple mouse, turn off the Apple mouse and the scroll shows,
in it I can?t change the background color. I used swift and macOS. Without
another mouse, only magic mouse I can change this color without problem.
Regards
El 12/4/21 a las 23:40, Jack Brindle escribi?:
What is the mouse, and is there any installed software involved that goes with
the mouse?
Jack
On Apr 12, 2021, at 12:30 AM, IOS NACSPORT via Cocoa-dev
<[email protected]> wrote:
Hi,
I don't kown is the correct place, In a NSScroller, when I conect the external
mouse, not apple's mouse, the scroll change and show always, the problem is
that I can't change its background color. How could it? or at least make it
clear.
Regards
_______________________________________________
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