In iOS I have used the “transform” property of UIView to rotate a slider.

David


> On May 7, 2015, at 1:11 PM, Jerry Krinock <je...@ieee.org> wrote:
> 
> I would like to subclass NSSlider to make it work like the "volume control" 
> on a mid 19th-century radio receiver. That is, I want the minimum value to be 
> at 7 o'clock, and the maximum value to be at 5 o'clock.  There two issues in 
> using the circular version of NSSlider for this:
> 
> 1.  There is no dead zone between the minimum and maximum settings.  (What 
> were they thinking?)
> 2.  The min and max settings are at the top, 12 o'clock.
> 
> I've solved the first issue by overriding -closestTickMarkValueToValue:.  
> (Oh, I'm also using "detents", allowsTickMarkValuesOnly = YES).
> 
> I think I could solve the second issue with more complicated code in 
> -closestTickMarkValueToValue:, but I'd also need to remap the values somehow 
> and this might be a mess.  So I was wondering if instead there was an easy 
> way to rotate the control on the screen by, say 165 degrees.
> 
> Am I correct that the answer is "no"?  Keep in mind that we're not just 
> drawing here; this is a control; we need mouse clicks, etc.
> 
> Indeed, I'm not much of a drawing and graphics guy.  
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