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Re: "ghost" knobs on sliders?
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Re: "ghost" knobs on sliders?


  • Subject: Re: "ghost" knobs on sliders?
  • From: "John C. Warner" <email@hidden>
  • Date: Wed, 30 Mar 2005 08:31:16 -0500


On 30 Mar, 2005, at 7:50 AM, Chris Stephens wrote:

Hi folks,

Thanks for all the help with my recent slider query: I'm sorted now and progressing.

I now have my application's sliders responding to physical movements of the knobs on the hardware device.

When I programmatically request a dump of all the controls (the hardware device has a command to let me do this) the slider knobs fly obediently to their positions - but sometimes leave a "ghost" image of the knob in the centre position where they all were a moment before.

You can see the effect at http://www.elucid.com.au/images/ghost-knobs.jpg .

Is this a known phenomenon? How should I fix it?

Maybe you've already seen this, but I think someone's already been down the same road. <http://www.cocoadev.com/index.pl?TrackingSlider>


-John

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References: 
 >"ghost" knobs on sliders? (From: Chris Stephens <email@hidden>)

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