41eefd7493
... as it has outlived its original purpose: Qt3 implementation on X11: void QApplication::flush() { flushX(); } void QApplication::flushX() { if (appDpy) XFlush( appDpy ); } Qt4 implementation on X11: Did nothing when QApplication::flush() was called (the flush() overrides in {unix,glib} event dispatchers with empty bodies). In Qt5 this function somehow has been repurposed (inconsistently) to do what QCoreApplication::sendPostedEvents already does: QAbstractEventDispatcher::flush() = 0; => QCocoaEventDispatcher::flush() {} => QEventDispatcherCoreFoundation::flush() {} => QIOSEventDispatcher (does not override ::flush()) => QEventDispatcherGlib::flush() {} => QPAEventDispatcherGlib (does not override ::flush()) => QEventDispatcherUNIX::flush() {} => QUnixEventDispatcherQPA (when QT_NO_GLIB=true) ::flush() { if (qApp) qApp->sendPostedEvents(); }) ==> QAndroidEventDispatcher (does not override ::flush()) => QEventDispatcherWin32::flush() {} => QOffscreenEventDispatcher::flush() { if (qApp) qApp->sendPostedEvents(); QEventDispatcherWin32::flush(); } => QWindowsGuiEventDispatcher (does not override ::flush()) => QWindowsDirect2DEventDispatcher (does not override ::flush()) => QEventDispatcherWinRT::flush() {} => QOffscreenEventDispatcher::flush() { if (qApp) qApp->sendPostedEvents(); QEventDispatcherWinRT::flush(); } => QWinRTEventDispatcher (qminimaleglintegration.cpp) (does not override ::flush()) => QWinRTEventDispatcher (qwinrteventdispatcher.h) (does not override ::flush()) Whatever this function was doing on macOS in Qt3 and Qt4 also has been dropped in Qt5. It appears that the other event dispatchers in Qt5 that have overrides for flush() have simply copy-pasted this logic. Clearly the documentation of QCoreApplication::flush() is outdated and has nothing to do with the actual implementation in Qt5. This function is rarely used in Qt5 sources. It should be safe to remove the calls to QCoreApplication::flush() from Qt source code, as this function has been doing nothing on most platforms anyways. Repurposing it even broke handling of posted events (see QTBUG-48717). [ChangeLog][QtCore][Event loop] QCoreApplication::flush() is now deprecated. Use QCoreApplication::processEvents() and QCoreApplication::sendPostedEvents() instead. Task-number: QTBUG-33489 Task-number: QTBUG-48717 Change-Id: Icc7347ff203024b7153ea74be6bf527dd07ce821 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io> Reviewed-by: David Faure <david.faure@kdab.com> Reviewed-by: Gunnar Sletta <gunnar@crimson.no> |
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benchapps | ||
chiptester | ||
images | ||
qgraphicsview.pro | ||
qgraphicsview.qrc | ||
random.data | ||
tst_qgraphicsview.cpp |