Re: Pointer hooks

[Tim Janik <timj gtk org>]

On 2 Jul 2001, Owen Taylor wrote:

> 
> This look like what you want for '56914 Add virtualization of XQueryPointer'?
> 
> I haven't actually tried running it yet, but it compiles, and I
> don't think there is a whole lot I could have gotten wrong here.

jup, i think so, so far gerd-xwrapper.c only had to intercept
XQueryPointer().
however, grepping through the gdk sources, we also use XQueryPointer() in
void
handle_motion_notify(XDeviceMotionEvent *event)
{ ... }

i'm not sure how that correlates, since i don't know when that function
is actually triggered and why it doesn't have a gdk_ prefix.

of course this virtualization stuff will only work:
- if we don't add XQueryPointer() to other (newly introduced) gdk functions
  during a stable release (for devel we could virtualize such a function
  as well then)
- if XQueryPointer() is indeed the only thing that X offers to query current
  state (though it looks like this as all other things are delivered per
  events)

with this virtualization, GERD should become gdk-backend independant, which
would actually be pretty cool.

> 
> Regards,
>                                         Owen
> 

---
ciaoTJ