Is there a mapping table for all rawKeyUp Codes?
mark at livecode.com
Tue Dec 6 03:24:37 EST 2016
On 2016-11-24 17:31, Tiemo Hollmann TB wrote:
> since keyUp doesn't works anymore as it should on windows in LC 7/8
> (see my
> previous post) I have to workaround with rawKeyUp.
Can you explain what effect you are trying to achieve? There might be
another way to do what you want.
The keyUp message isn't quite what it appears to be - it is a synthetic
message generated by the engine *after* passing a keyDown event through
the message path. In particular, it has no direct relation to the user
actually releasing a key.
In theory, keyUp is equivalent to doing:
on keyDown pKey
send "keyUp pKey" to me in 0 millisecs
In general, there is no guaranteed one-to-one mapping between key
strokes and keyDown/keyUp messages as it can sometimes take multiple key
presses to generate a single character (e.g. alt-e e to get e-acute on
Mac). This makes doing any wrangling from rawkey codes to characters
quite hard - as it depends entirely on the specific keyboard layout a
user has set, or which input method is in use.
If you are doing entry into a field and want to be notified of a user
editing action which has changed the content *after* the content has
been changed you could try using the 'textChanged' message. This is sent
after any user editing operation has completed, but before the screen is
unlocked and the changes displayed.
Mark Waddingham ~ mark at livecode.com ~ http://www.livecode.com/
LiveCode: Everyone can create apps
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