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doc: Reduce expectations for QInputDevice::devices()

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I was hoping we could get the list mostly correct and complete on most
platforms; but in practice, it's proving difficult on most platforms.
Hopefully we can find ways to improve it over time.

Task-number: QTBUG-101648
Task-number: QTBUG-101875
Task-number: QTBUG-112432
Task-number: QTBUG-113706
Task-number: QTBUG-113711
Change-Id: I16b6900cddb54197fb7b833a513e36996de72d51
Pick-to: 6.2 6.5
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
This commit is contained in:
Shawn Rutledge 2023-05-22 15:05:18 +02:00
parent bfa557da91
commit 8d11e05f8f
1 changed files with 7 additions and 0 deletions
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7
src/gui/kernel/qinputdevice.cpp
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@ -235,6 +235,13 @@ Q_CONSTINIT static QBasicMutex devicesMutex;
/*! /*!
Returns a list of all registered input devices (keyboards and pointing devices). Returns a list of all registered input devices (keyboards and pointing devices).
\note The list of devices is not always complete on all platforms. So far,
the most-complete information is available on the \l {Qt for Linux/X11}{X11}
platform, at startup and in response to hot-plugging. Most other platforms
are only able to provide generic devices of various types, only after receiving
events from them; and most platforms do not tell Qt when a device is plugged in,
or when it is unplugged at runtime.
\note The returned list cannot be used to add new devices. To add a simulated \note The returned list cannot be used to add new devices. To add a simulated
touch screen for an autotest, QTest::createTouchDevice() can be used. touch screen for an autotest, QTest::createTouchDevice() can be used.
Platform plugins should call QWindowSystemInterface::registerInputDevice() Platform plugins should call QWindowSystemInterface::registerInputDevice()