Re: Emulation of Alt+Numpad+Digits behavior

I'm not familiar with all the details, but it sounds like this may be
easiest done by adding a new input method on the client side - I've
cc'ed the i18n list in the hopes someone there can confirm or deny my
suspicion.

	-Alan Coopersmith-           [email protected]
	 Sun Microsystems, Inc. - X Window System Engineering

Jörg Henne wrote:
> Hi,
> 
> well, even after digging through lots of source code and documentation, 
> I could really use some help. What I am trying to do is to emulate the 
> MS-Windows behaviour which lets one enter arbitrary characters by using 
> the Alt-Key while entering the character code on the numerical keypad.
> 
> What would have to happen in order to emulate this feature is pretty 
> simple: after releasing the Alt-Key, two (down/up) extra events would 
> have to be sent which carry the keysym for the character which has been 
> entered. However, this is not possible because the events carry just the 
> keycodes and not keysyms.
> 
> I currently see two solutions:
> - To add some code to the keyboard driver which synthesizes the events 
> using a keysym-to-keycode lookup. This poses some problems: what happens 
> if no corresponding keycode exists for thei given keysym? And how does 
> this go together with xkb processing?
> 
> - To extend Xlib so that the emulation happens on the client side. Of 
> course this brings up even bigger problems: is there a central and 
> reliable place to do this? XLookupKeysym and friends would have to keep 
> some state and work together with some event dispatching magic. That 
> doesn't really sound healthy.
> 
> Well, that's it for now. Any help would be very greatly appreciated.
> Joerg Henne
> 
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