On 18/6/08 19:36, Eric Sciolli wrote:
Hello
I'm a teacher and I've students who needs specials keyboards to work with
standard applications. Does someone has tried to create a screen keyboard in
revolution to write in standard applications like Word? Perhaps using
appleEvents?
Hi Eric,
I've done this for use with RevBrowser - we wanted a customised browser for a
touchscreen, with the ability for users to complete forms.
The solution - at least for Mac - was to use AppleScript, with the extremely
useful application "System Events" (provided by Apple).
Here's the function I used:
on typeLetter tText, bShift
put "tell application" && quote & "System Events" & quote & return \
into tAScom
put "key code" && tText after tAScom
if bShift then put " using shift down" after tAScom
put return & "end tell" & return after tAScom
do tAScom as applescript
end typeLetter
But note that you send a key code, rather than the letter you want. I made
the keyboard out of buttons, each with a custom property for the keycode they
should corrrespond to; the keyboard was grouped, and the group contained a
mouseUp handler
on mouseUp
typeLetter (the uKeyCode of the target), stShiftStatus
end mouseUp
I don't recall where I found the reference for keycodes, but I would expect
Google will be your friend (if not let me know and I can reverse it back out
of the buttons).
The problem I can foresee is about how you prevent Revolution receiving the
keypresses. In my project, Rev and RevBrowser are both the front-most
application, but Rev isn't able to send keypresses into the browser (which is
really an instance of webkit). So Rev asked the "System Events" application
to 'type' the keys, and since the revbrowser instance had the focus, in the
front-most application, this worked fine. In your case I would expect that
the Rev app presenting the on-screen keyboard would be the front-most app,
otherwise why did it get the mouse event - so it would probably receive the
key event also.
Someone else might be able to provide the piece of the puzzle that lets you
make a Rev stack appear as a floating palette - receiving mouse clicks on its
window without actually acquiring focus or being the front-most app.
Otherwise I think you'd have to modify the 'typeLetter' handler above so that
it finds out which app is next-to-front, and activates that app before sending
the message to "System Events".
Hope this helps,
- Ben
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