On 12/ago/2009, at 21.30, David Duncan wrote:

>> From my experience on Windows, DPIHeight and DPIWidth are properties of the
>> display device the image is drawn on, and not properties of the image
>> itself.
> 
> They are properties of both. In the case of printing, you are using a fixed 
> grid at 72 PPI. Your source image of course has its own DPI that determines 
> the actual size of the image in real world units. You combine the two to 
> print or display an image at its natural size.

Do you mean that there is no way to print an image using a grid of 300 PPI with 
Cocoa/Quartz?
If not, why? Alternatives?

-- 
Ciao,
Mirko

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