Re: NSTableViews with NSSliderCells
Re: NSTableViews with NSSliderCells
- Subject: Re: NSTableViews with NSSliderCells
- From: Jeffrey Johnson <email@hidden>
- Date: Thu, 6 Apr 2006 09:46:40 -0400
On 4/5/06 at 4:57 PM, email@hidden (Corbin Dunn) wrote:
>On Apr 4, 2006, at 7:47 AM, Jeffrey Johnson wrote:
>> 1) To get the column 2 cell to display the value from the slider in
>> column 3, I'm getting the doubleValue: from the slider, pushing it
>> to my data source, then calling reloadData on the table in the
>> slider's action method. This seems to work, but it seems a waste to
>> reload the whole table for one cell- is there a way to target and
>> update a single cell?
>
>You should use:
>[table setNeedsDisplayInRect:[table frameOfCellAtColumn:col row:row]];
Ah! Exactly what I needed. Thanks!
>> 2) I need to do certain things when the slider starts and stops
>>tracking (besides what happens in the action method) and I haven't
>> found a way to trap these events for the NSSliderCell in a
>> NSTableView, like I would with mouseUp and mouseDown if I was working
>> with an NSSlider control.
>
>Your best bet probably is to subclass NSSliderCell and do it there
>when tracking starts and stops
Ok- I overrode startTrackingAt:inView and
stopTracking:at:inView:mouseIsUp: and it works like a charm. Thanks
again!
Thanks
Jeffrey Johnson
Macintosh Development
Wavefunction, Inc.
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