ken wrote:

the only way i can think to perform this conversion is to itereate over the virtual key codes 0-127 (with various combinations of shift and option keys) until i find the one that matches the user input character.

and while this is certainly doable, it feels awfully clumsy (and potentially slow).

is there a better way?


Create the inverse mapping once, e.g. in an NSDictionary, then use that mapping thereafter, instead of searching repeatedly.

This assumes there is an unambiguous inverse mapping, which ain't necessarily so. For example, a keyboard with a numpad has duplicate key legends for all numpad keys. I think these numpad keys have different keycodes than the keys in the main alphanum layout. So given a character like "1" (or "*", "=", etc.) it's not possible to reverse it to a single unique keycode.

  -- GG

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