diff options
Diffstat (limited to 'src/plugins/platforms/windows/qwindowscontext.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowscontext.cpp | 71 |
1 files changed, 63 insertions, 8 deletions
diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp index 9757fa5f3f..88d3131de2 100644 --- a/src/plugins/platforms/windows/qwindowscontext.cpp +++ b/src/plugins/platforms/windows/qwindowscontext.cpp @@ -274,6 +274,8 @@ struct QWindowsContextPrivate { const HRESULT m_oleInitializeResult; QWindow *m_lastActiveWindow = nullptr; bool m_asyncExpose = false; + HPOWERNOTIFY m_powerNotification = nullptr; + HWND m_powerDummyWindow = nullptr; }; QWindowsContextPrivate::QWindowsContextPrivate() @@ -314,6 +316,13 @@ QWindowsContext::~QWindowsContext() #if QT_CONFIG(tabletevent) d->m_tabletSupport.reset(); // Destroy internal window before unregistering classes. #endif + + if (d->m_powerNotification) + UnregisterPowerSettingNotification(d->m_powerNotification); + + if (d->m_powerDummyWindow) + DestroyWindow(d->m_powerDummyWindow); + unregisterWindowClasses(); if (d->m_oleInitializeResult == S_OK || d->m_oleInitializeResult == S_FALSE) OleUninitialize(); @@ -381,6 +390,55 @@ bool QWindowsContext::initPointer(unsigned integrationOptions) return true; } +extern "C" LRESULT QT_WIN_CALLBACK qWindowsPowerWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) +{ + if (message != WM_POWERBROADCAST || wParam != PBT_POWERSETTINGCHANGE) + return DefWindowProc(hwnd, message, wParam, lParam); + + static bool initialized = false; // ignore the initial change + if (!initialized) { + initialized = true; + return DefWindowProc(hwnd, message, wParam, lParam); + } + + auto setting = reinterpret_cast<const POWERBROADCAST_SETTING *>(lParam); + if (setting) { + auto data = reinterpret_cast<const DWORD *>(&setting->Data); + if (*data == 1) { + // Repaint the windows when returning from sleeping display mode. + const auto tlw = QGuiApplication::topLevelWindows(); + for (auto w : tlw) { + if (w->isVisible() && w->windowState() != Qt::WindowMinimized) { + if (auto tw = QWindowsWindow::windowsWindowOf(w)) { + if (HWND hwnd = tw->handle()) { + InvalidateRect(hwnd, nullptr, false); + } + } + } + } + } + } + return DefWindowProc(hwnd, message, wParam, lParam); +} + +bool QWindowsContext::initPowerNotificationHandler() +{ + if (d->m_powerNotification) + return false; + + d->m_powerDummyWindow = createDummyWindow(QStringLiteral("QtPowerDummyWindow"), L"QtPowerDummyWindow", qWindowsPowerWindowProc); + if (!d->m_powerDummyWindow) + return false; + + d->m_powerNotification = RegisterPowerSettingNotification(d->m_powerDummyWindow, &GUID_MONITOR_POWER_ON, DEVICE_NOTIFY_WINDOW_HANDLE); + if (!d->m_powerNotification) { + DestroyWindow(d->m_powerDummyWindow); + d->m_powerDummyWindow = nullptr; + return false; + } + return true; +} + void QWindowsContext::setTabletAbsoluteRange(int a) { #if QT_CONFIG(tabletevent) @@ -546,15 +604,12 @@ QString QWindowsContext::registerWindowClass(QString cname, // each one has to have window class names with a unique name // The first instance gets the unmodified name; if the class // has already been registered by another instance of Qt then - // add a UUID. - static int classExists = -1; - + // add a UUID. The check needs to be performed for each name + // in case new message windows are added (QTBUG-81347). const auto appInstance = static_cast<HINSTANCE>(GetModuleHandle(nullptr)); - if (classExists == -1) { - WNDCLASS wcinfo; - classExists = GetClassInfo(appInstance, reinterpret_cast<LPCWSTR>(cname.utf16()), &wcinfo); - classExists = classExists && wcinfo.lpfnWndProc != proc; - } + WNDCLASS wcinfo; + const bool classExists = GetClassInfo(appInstance, reinterpret_cast<LPCWSTR>(cname.utf16()), &wcinfo) == TRUE + && wcinfo.lpfnWndProc != proc; if (classExists) cname += QUuid::createUuid().toString(); |