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kTISPropertyUnicodeKeyLayoutData Returns NULL

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kTISPropertyUnicodeKeyLayoutData Returns NULL

Subject: kTISPropertyUnicodeKeyLayoutData Returns NULL
From: Joe Turner <email@hidden>
Date: Tue, 25 Aug 2009 13:42:12 -0500

Hey,

So, to translate from a string to a keycode, I've been using the UCKeyboardLayout. But, on some keyboard layouts (only Japanese so far), I get a NULL pointer for the layout, and then the app crashes.

Here's the code: TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource(); CFDataRef uchr = (CFDataRef)TISGetInputSourceProperty(currentKeyboard, kTISPropertyUnicodeKeyLayoutData); keyboardLayout = (const UCKeyboardLayout*)CFDataGetBytePtr(uchr);

The third line is where it will crash, I assume because I am passing NULL into the CFDataGetBytePtr().

In reading the documentation, it seems that the value of property "kTISPropertyUnicodeKeyLayoutData" only returns NULL if there is no layout data, or if the data is KCHR. So, do these users somehow have KCHR keyboard layouts? If so, it seems apple has depricated any methods that could be used to get the data and then keycodes from a KCHR resource. So, is there any way around this?

Cheers,

Joe
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