Am 30.06.2010 um 12:56 schrieb Jean-Marc LASGOUTTES:
> "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?Really cool! It works with one small correction: the convert() function cannot handle the double value. I changed the patch accordingly and attach it again. Stephan
scroll.diff
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