Re: OS X Preview -- wrong size
Re: OS X Preview -- wrong size
- Subject: Re: OS X Preview -- wrong size
- From: Graeme Gill <email@hidden>
- Date: Fri, 25 Feb 2005 01:48:52 +1100
- Organization: Argyll CMS
Sam Smith wrote:
On a Mac I think this is because OSX is broken, it returns 72DPI for
the screen resolution, no matter what screen it is.
Where do you see that? What does 'returns' mean?
The Graphic Device Structure returned by the DMGetFirstScreenDevice/DMGetNextScreenDevice
functions always has a value of 72 in its hRes and vRes elements. This is using
the older DisplayManager API.
The newer Quartz services API doesn't even have a method of discovering
the displays resolution, even though it has stuff like "RefreshRate" available.
This is all rather frustrating when trying to figure out how wide to make
a window so that it's big enough to seen by an instrument, and would lead
to similar problems in trying to display a raster "actual size".
Graeme Gill.
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