P McIlroy wrote:
>I have an app that currently uses the QuickTime sdk to open png files
>on OSX, but uses .bmp files everywhere else. I would like to make it
>more portable, using libpng.
>
>I see via Spotlight that there is a copy in /Developer/SDKs/......./
>libPng.dylib
>
>Can I use the methods in this, and get rid of the quicktime stuff
>without distributing libpng as part of the app, or do I need to
>continue to use Quicktime? Since I need to use libpng methods anyway,
>it might be simpler to use the same interface on OS X as well.
It looks like this .dylib is internal to ImageIO.framework ("locate
libPNG.dylib"), so you should really treat it as an implementation
detail.
CGImage or ImageIO both have 2-line methods to get a CGImageRef for a
.png file, so if there's a similar API on your other platform(s) then
you could use those vs requiring QuickTime be installed.
-dair
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