On Tue, May 12, 2009 at 10:29 AM, Uli Kusterer <[email protected]> wrote: > On 12.05.2009, at 12:35, Alastair Houghton wrote: >> >> If, however, you really want the display to physically show a 5cm x 5cm >> block, you can obtain the screen's actual dimensions in millimeters from >> CGDisplayScreenSize() and then use those numbers in conjunction with the >> pixel dimensions to calculate a suitable transform. > > > Last I looked into this, many screens just returned 72 dpi from that API, > though. Many screens apparently don't provide this information, or not > correctly. Make sure to do some tests, particularly with cheap screens from > the electronics discounter around the corner.
Even if they were complaint (which I doubt) you'll still fail in situations like using a projector, running over VNC, etc. It would be nice if there were some easy way to do this, but it's not likely.... Mike _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
