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Thread: Greatest "keyCode" value for KeyboardEvent

  1. #1

    Greatest "keyCode" value for KeyboardEvent

    Does anyone know the greatest possible value the "keyCode" property will return?

    I'm mostly worried about international keyboards.



    I'm wanting to release a few KeyboardEvents myself using some rather nifty code (if I may say so myself) and want to make sure there are no future conflicts.

    Each of my "special keys" have a unique id numbered sequentially. Is there anywhere I can start my numbering from where I can be safe from conflicting key codes?
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  2. #2
    would negative integers or fractions be applicable ?

  3. #3
    Ah, nice thinking.

    The "KeyboardEvent.keyCode" property is a "uint", but it may be possible to change that property in my class to an "int", though, if you pass a uint to it with a number greater than the max value of it, it will convert to a negative number anyway.

    As metju mentioned via IRC, if I pick a really high number, it shouldn't conflict with anything. But I'm still curious to know the "current theoretical maximum". (where is GlosRFC? If anyone, he should know.
    Blog article of the month: Why My One Line 'if' Statements Are Unusual
    Twitter: @IQAndreas
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  4. #4
    yep, GlosRFC'll know I had a look out of curiosity and it got tricky because windows seems to have key codes altered with pressing the alt key in order to get any non-english characters. I know in japan you can just use a normal keyboard so I imagine same number of keys = same number of key codes ? what if you take say all the key codes and convert them back into characters - so start at 255 and increment up tracing the key-code to character and see when it breaks ?

    <edit> ok that was a dumb idea - at 10000 I realized why.

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