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Add a note to QTouchEvent docs about empty touchpoint lists

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Change-Id: I65e9e3ed2069d9194f5e70fb9731d605e0979e6d
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
This commit is contained in:
Laszlo Agocs 2012-03-15 13:31:00 +02:00 committed by Qt by Nokia
parent 1e4f035158
commit 83a70a7415
1 changed files with 4 additions and 3 deletions
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7
src/gui/kernel/qevent.cpp
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@ -3378,9 +3378,10 @@ QWindowStateChangeEvent::~QWindowStateChangeEvent()
gestures. Whenever such a decision is made (the gesture is recognized), the clients will be
notified with a QEvent::TouchCancel event so they can update their state accordingly.
The touchPoints() function returns a list of all touch points contained in the event.
Information about each touch point can be retrieved using the QTouchEvent::TouchPoint class.
The Qt::TouchPointState enum describes the different states that a touch point may have.
The touchPoints() function returns a list of all touch points contained in the event. Note that
this list may be empty, for example in case of a QEvent::TouchCancel event. Information about
each touch point can be retrieved using the QTouchEvent::TouchPoint class. The
Qt::TouchPointState enum describes the different states that a touch point may have.
\section1 Event Delivery and Propagation