On Jun 30, 2010, at 4:56 AM, Jean-Marc LASGOUTTES <lasgout...@lyx.org> wrote:
> "James C. Sutherland" <james.sutherl...@utah.edu> writes:
>> When trying to scroll with the mouse, I get many copies of the following
>> message:
>>
>>> /Users/stephan/cvs/lyx/lyx-2.0.0alpha4/src/frontends/qt4/GuiWorkArea.cpp(840):
>>> wheelScrollLines = 3 delta = 0 scroll_value = 0 page_step = 734
>>>
>
> The problem is "delata = 0". The code reads:
>
> void GuiWorkArea::wheelEvent(QWheelEvent * ev)
> {
> // Wheel rotation by one notch results in a delta() of 120 (see
> // documentation of QWheelEvent)
> int const delta = ev->delta() / 120;
>
> On PCs, the mouse wheel clicks, and each wheelEvent corresponds to a
> multiple of 120 (unot is eighth of degree, and a click is 15 degrees).
> On a mac, the situation is different, since the wheel turns smoothly.
>
> It might be enough to have delta be a double. Could you test the
> attached patch?
>
> JMarc
>
> <scroll.diff>
I am not really set up to build LyX from source right now, but would
be happy to test a binary.
Perhaps Rob is willing to build from source? Or maybe Uwe is willing
to send out a binary?
James
