On Wed, Sep 16, 2009 at 10:29:02 +0300, Arkadi Viner wrote:
> Hello.
> I want to write a program which should record pressed sequences of keys and
> if it receives some shortcut key it will
> send delete key to erase wrong typed content, then it will convert from one
> language characters to an another (according to some translation map) and
> then send them again to the active application.
> It will help people who forgets to switch typing language when they type...
> Maybe some one knows what I should look for? How to hook to an active
> application event listener or some how communicate
> directly with the X server?
Both XCB and X11 libraries have bindings for vala, but I don't think either
of them is complete. See xcb.vapi and x11.vapi respectively. It might be even
possible to use gdk (gdk-x11 is bound) for the even handling itself, but you
will still need to find the windows with x11 (gdk-x11-2.0 depends on x11) and
it's many extra dependencies if you didn't need your own gui.
For the event handling itself, I believe X allows you to listen to events on
any window on the display, independently of whether you created it, so if you
find the window, you can simply register the events.
Just be warned, that X sends keyboard events to the window under mouse and
modern gui libraries go to some length to get the events where they really
want them. It used to make life easier at times of athena widgets (which
simply didn't bother and used that semantics), but now it makes it harder if
one wants to keep separate keyboard focus.
--
Jan 'Bulb' Hudec <[email protected]>
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