The problem is solved please check this https://forum.qt.io/topic/113640/solved-why-q-window-events-are-eaten-by-qml-item thanks

Hi Hmm, nope. it looks very much like the sample with some code from TriangleWindow::initialize() in the render() function.

@marcbf said in Remember window size before maximization (or Detect if QResizeEvent is maximization): int w = currentSize.width(); int h = currentSize.height(); if (restoresize) { w = qMax(settings["Width"].Value(0), w); h = qMax(settings["Height"].Value(0), h); } Man, this is the deal!!! Everything worked perfectly after I fine tuned your code to my context! Thank you very much. The trick was really to use normalGeometry and windowState, so these two are the answer to my question.

@mrjj Thanks for the reply! I followed your advice and tried setting the panelWindow as the parent... No change.. Any other ideas? I followed this link, http://doc.qt.io/qt-5/qmacnativewidget.html#details

@mrjj yeah!! its working bro if i remove label.. Thank you all for your suggestions

@pmendl No problem. Do bear in mind that if you decide to send the event with QApplication::sendEvent, you are responsible for the event object's deletion, so it's a good idea to create it on the stack in that case. Good luck! Kind regards.

It's not very well exposed, but this is actually documented in QPainter::begin(): Warning: A paint device can only be painted by one painter at a time.

@Wieland Thanks for the help and the link. Do you know any desktop environment where showMaximized doesn't work? No I do not. I'm contributing to an open source project so I want to be sure.

@SGaist Ok I guess i'll open a different question for this issue, thanks anyway for your help

@p3c0 Hey thanks! Works as expected. Another baby step on the road to writing more interesting bugs. . . ;-)

Hi, You could try with an eventFilter and handle QEvent::InputMethod in there Hope it helps

Can you try to first go full screen and only then create the embedded QWindow ?

I found out the solution using native Windows Gestures WM_Gesture. By default QT registers QMainWindow-Window as a Touch Window, so the QMainWindow-App only get WM_Touch events. As said above one can only get either WM_Touch event or WM_Gesture event. So you have to unregister the window from getting Touch event. I do that in the constructor like this: HWND myHwnd = reinterpret_cast<HWND>(this->winId()); PULONG flag = 0; bool istouch = IsTouchWindow(myHwnd,flag); if(istouch) UnregisterTouchWindow(myHwnd); now i get WM_Gesture events in nativeEvent: bool OpenGLWindow::nativeEvent(const QByteArray & eventType, void* message, long* result) { MSG* msg = reinterpret_cast<MSG*>(message); switch(msg->message){ case WM_GESTURE: case WM_GESTURENOTIFY: emit sendNativeEvent(eventType, message, result); break; } return false; } Thanks for your help.

Hi, Sounds like you may have found a regression. You should take a look at the bug report system to see if it's something known. If not please consider opening a new report providing a minimal compilable example showing the behavior

There is a static function of QWidget that will create a container widget with a QWindow as a parent. QWidget* QWidget::createWindowContainer(QWindow *,...) Once you have the widget container this can be the parent of any other dialogs or widgets you need to add.