Input Event Handling
glynn at gclements.plus.com
Thu Apr 5 05:34:51 PDT 2007
Thorsten Wilms wrote:
> > Input focus is to a particular window, so you get device -> kernel -> X
> > server -> app.
> There are cases like sliders in a windows with scrollbars. With
> gtk+ at least, if the pointer is on the slider, mouse-wheel will
> move the slider. But with the pointer anywhere else, the wheel
> Does this mean that input focus has to be redone on the window/
> application level for things like this to work?
The mouse wheel generates button events, not key events; there are
some differences in the way that the two are handled. In particular,
unless there is a grab active, button events are always reported to
the window under the pointer; there is no persistent "mouse focus" in
the same sense that there is a keyboard focus.
Glynn Clements <glynn at gclements.plus.com>
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