Anyone know the DPI of the 24" iMac?

Scott Anguish scott at cocoadoc.com
Thu Oct 19 14:26:10 PDT 2006


well, that's the suck.

thanks Greg.


On Oct 19, 2006, at 5:19 PM, Greg Titus wrote:

>
> On Oct 19, 2006, at 14:16 , Scott Anguish wrote:
>
>> well, I did do that... but I wasn't confident in the results...
>>
>> especially when you run Quartz Debug on a 23" display and look at  
>> the User Interface Resolution and it says 72 dpi
>>
>> the calculation on the other hand gives you
>>
>> (1920 * 1920) + (1200 * 1200)
>> = 5126400
>>
>> sqrt(5126400) / 23
>> = 98.441542247547 dpi
>>
>> which just doesn't jive.
>>
>> that's why I was hoping someone could either run Quartz Debug, or  
>> my little app.
>
> At least as of 10.4.8, you can't trust the screen resolution that  
> you get from the CGScreen info functions. It will always return 72  
> dpi no matter what the hardware is, as far as I can tell.
>
> 	- Greg



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