diff options
Diffstat (limited to 'src/corelib/kernel/qeventdispatcher_win.cpp')
| -rw-r--r-- | src/corelib/kernel/qeventdispatcher_win.cpp | 68 |
1 files changed, 39 insertions, 29 deletions
diff --git a/src/corelib/kernel/qeventdispatcher_win.cpp b/src/corelib/kernel/qeventdispatcher_win.cpp index b197b9d..c6eef5e 100644 --- a/src/corelib/kernel/qeventdispatcher_win.cpp +++ b/src/corelib/kernel/qeventdispatcher_win.cpp @@ -336,6 +336,7 @@ public: // internal window handle used for socketnotifiers/timers/etc HWND internalHwnd; + HHOOK getMessageHook; // for controlling when to send posted events QAtomicInt serialNumber; @@ -363,7 +364,7 @@ public: }; QEventDispatcherWin32Private::QEventDispatcherWin32Private() - : threadId(GetCurrentThreadId()), interrupt(false), internalHwnd(0), serialNumber(0), lastSerialNumber(0), wakeUps(0) + : threadId(GetCurrentThreadId()), interrupt(false), internalHwnd(0), getMessageHook(0), serialNumber(0), lastSerialNumber(0), wakeUps(0) { resolveTimerAPI(); } @@ -471,37 +472,11 @@ LRESULT CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPARAM lp) } return 0; } else if (message == WM_TIMER) { - if (wp == SendPostedEventsTimerId) { - KillTimer(d->internalHwnd, wp); - int localSerialNumber = d->serialNumber; - (void) d->wakeUps.fetchAndStoreRelease(0); - if (localSerialNumber != d->lastSerialNumber) { - PostMessage(d->internalHwnd, WM_QT_SENDPOSTEDEVENTS, 0, 0); - } - } else { - Q_ASSERT(d != 0); - d->sendTimerEvent(wp); - } + Q_ASSERT(d != 0); + d->sendTimerEvent(wp); return 0; } else if (message == WM_QT_SENDPOSTEDEVENTS) { int localSerialNumber = d->serialNumber; - - if (GetQueueStatus(QS_INPUT | QS_RAWINPUT | QS_TIMER) != 0) { - // delay the next pass of sendPostedEvents() until we get the special - // WM_TIMER, which allows all pending Windows messages to be processed - if (SetTimer(d->internalHwnd, SendPostedEventsTimerId, 0, 0) == 0) { - // failed to start the timer, oops, clear wakeUps in an attempt to keep things running - qErrnoWarning("Qt: INTERNAL ERROR: failed to start sendPostedEvents() timer"); - d->wakeUps.fetchAndStoreRelease(0); - } else { - // SetTimer() succeeded, nothing to do now - ; - } - } else { - // nothing pending in the queue, let sendPostedEvents go through - d->wakeUps.fetchAndStoreRelease(0); - } - if (localSerialNumber != d->lastSerialNumber) { d->lastSerialNumber = localSerialNumber; QCoreApplicationPrivate::sendPostedEvents(0, 0, d->threadData); @@ -512,6 +487,31 @@ LRESULT CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPARAM lp) return DefWindowProc(hwnd, message, wp, lp); } +LRESULT CALLBACK qt_GetMessageHook(int code, WPARAM wp, LPARAM lp) +{ + if (wp == PM_REMOVE) { + QEventDispatcherWin32 *q = qobject_cast<QEventDispatcherWin32 *>(QAbstractEventDispatcher::instance()); + Q_ASSERT(q != 0); + if (q) { + QEventDispatcherWin32Private *d = q->d_func(); + int localSerialNumber = d->serialNumber; + if (HIWORD(GetQueueStatus(QS_INPUT | QS_RAWINPUT | QS_TIMER)) == 0) { + // no more input or timer events in the message queue, we can allow posted events to be + // sent now + (void) d->wakeUps.fetchAndStoreRelease(0); + MSG *msg = (MSG *) lp; + if (localSerialNumber != d->lastSerialNumber + // if this message IS the one that triggers sendPostedEvents(), no need to post it again + && msg->hwnd != d->internalHwnd + && msg->message != WM_QT_SENDPOSTEDEVENTS) { + PostMessage(d->internalHwnd, WM_QT_SENDPOSTEDEVENTS, 0, 0); + } + } + } + } + return CallNextHookEx(0, code, wp, lp); +} + static HWND qt_create_internal_window(const QEventDispatcherWin32 *eventDispatcher) { // make sure that multiple Qt's can coexist in the same process @@ -636,6 +636,12 @@ void QEventDispatcherWin32::createInternalHwnd() return; d->internalHwnd = qt_create_internal_window(this); + // setup GetMessage hook needed to drive our posted events + d->getMessageHook = SetWindowsHookEx(WH_GETMESSAGE, (HOOKPROC) qt_GetMessageHook, NULL, GetCurrentThreadId()); + if (!d->getMessageHook) { + qFatal("Qt: INTERNALL ERROR: failed to install GetMessage hook"); + } + // register all socket notifiers QList<int> sockets = (d->sn_read.keys().toSet() + d->sn_write.keys().toSet() @@ -1058,6 +1064,10 @@ void QEventDispatcherWin32::closingDown() d->unregisterTimer(d->timerVec.at(i), true); d->timerVec.clear(); d->timerDict.clear(); + + if (d->getMessageHook) + UnhookWindowsHookEx(d->getMessageHook); + d->getMessageHook = 0; } bool QEventDispatcherWin32::event(QEvent *e) |