Re: Pixel Size
Re: Pixel Size
- Subject: Re: Pixel Size
- From: "Gerriet M. Denkmann" <email@hidden>
- Date: Fri, 29 Sep 2006 20:01:15 +0200
On 29 Sep 2006, at 09:41, Shawn Erickson wrote:
On Sep 28, 2006, at 11:55 PM, Gerriet M. Denkmann wrote:
On 28 Sep 2006, at 14:37, Dmitry Savenok wrote:
try this
width = [[[[_window screen] deviceDescription]
objectForKey:NSDeviceSize] sizeValue].width;
height = [[[[_window screen] deviceDescription]
objectForKey:NSDeviceSize] sizeValue].height;
width, height - screen size in pixels
Thanks very much. But, as you certainly know, the size of a pixel
is computed as
screen width in mm / screen width in pixels and screen height
in mm / screen height in pixels.
So the next question: How do I get the screen dimensions in mm (or
any other length unit) ?
In Google... "screen dpi site:developer.apple.com"
First hit: <http://developer.apple.com/qa/qa2001/qa1217.html>
Thank you very much for this link.
But now I have another problem:
IOKit tells me that my iBook has a screen 250 x 180 mm.
But when I apply a ruler to this screen I see something like 245.5 x
184.1 mm.
Am I suffering from a reality distortion field? Is this some
relativistic effect? Or are Apple engineers just not familiar with un-
american units like mm ?
Same with my Studio Display: IOKit says 330 x 270 mm. I think 338 x 271.
Kind regards
Gerriet.
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