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Docs: add important QWheelEvent::phase() related notes

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Change-Id: I4901b96b44b7c1179e678689af5962cb4570d50d
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
This commit is contained in:
J-P Nurmi 2013-11-27 13:24:59 +01:00 committed by The Qt Project
parent 6c3adb5f96
commit 7d5448d9e2
1 changed files with 15 additions and 0 deletions
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15
src/gui/kernel/qevent.cpp
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@ -709,6 +709,12 @@ QWheelEvent::QWheelEvent(const QPointF &pos, const QPointF& globalPos,
Example: Example:
\snippet code/src_gui_kernel_qevent.cpp 0 \snippet code/src_gui_kernel_qevent.cpp 0
\note On platforms that support scrolling \l{phase()}{phases}, the delta may be null when:
\list
\li scrolling is about to begin, but the distance did not yet change (Qt::ScrollBegin),
\li or scrolling has ended and the distance did not change anymore (Qt::ScrollEnd).
\endlist
*/ */
/*! /*!
@ -731,6 +737,12 @@ QWheelEvent::QWheelEvent(const QPointF &pos, const QPointF& globalPos,
Example: Example:
\snippet code/src_gui_kernel_qevent.cpp 0 \snippet code/src_gui_kernel_qevent.cpp 0
\note On platforms that support scrolling \l{phase()}{phases}, the delta may be null when:
\list
\li scrolling is about to begin, but the distance did not yet change (Qt::ScrollBegin),
\li or scrolling has ended and the distance did not change anymore (Qt::ScrollEnd).
\endlist
*/ */
/*! /*!
@ -830,6 +842,9 @@ QWheelEvent::QWheelEvent(const QPointF &pos, const QPointF& globalPos,
\since 5.2 \since 5.2
Returns the scrolling phase of this wheel event. Returns the scrolling phase of this wheel event.
\note The Qt::ScrollBegin and Qt::ScrollEnd phases are currently
supported only on Mac OS X.
*/ */