When TISGetInputSourceProperty( *, kTISPropertyUnicodeKeyLayoutData) returns NULL

I happened to use Korean input method when I launched a S/W program. Then it crashed at accessing the resultant object of TISGetInputSourceProperty().


They say Japanese keyboard caused returning NULL. I will add Korean input method to that.

Here are two things to be aware of :

  • What is interesting is that kTISPropertyUnicodeKeyLayoutData is still used when it queries last ASCII capable keyboard.
  • It is TISCopyCurrentASCIICapableKeyboardLayoutInputSource() not TISCopyCurrentASCIICapableKeyboardInputSource() to call. The latter doesn’t guarantee that it would return an keyboard input with a layout.

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