Hi folks,
I'm wondering if there's a way to determine whether or not a font supports a particular Unicode character in Cocoa Touch.
Alternatively, is it possible to specify the default substitute character?
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166answers:
1
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A:
Check out CTFontGetGlyphsForCharacters in the Core Text framework. If it returns zero for a given Unicode character's glyph index, then that character isn't supported in that font. The function returns false if any of the glyphs couldn't be found.
Tony
2010-04-22 15:15:47
Core Text isn't really an option for me because it's only been introduced to iPhone OS with version 3.2 for the iPad.
conmulligan
2010-04-22 15:56:00
In that case, you can use `CGFontGetGlyphWithGlyphName`, and pass in a string with just the character in question. I don't know what the rules are for composed characters, for example Helvetica on iPhone OS 3.1.3 has a glyph for e, but returns zero for é, ´, and combining acute accent.
Tony
2010-04-22 17:19:42