Then please fill a bug report. Maybe there is already one.

@SGaist Its about precision moves, if user wants to move by tiny bit, scaling mouse movement by x value would allow that to happen. Else he would have to type 0.0001 0.0002 0.0003 etc etc.

I think I could handle it using itemChange() and record initial mouse click press/release and calculate delta using that..

Yep that seem to do the trick... I can now move my items by tiny amount and doing "Long precise drags"

deltaX = (newPos.x() - self.mMousePressPosition.x()) / 2 newPos.setX(newPos.x() - deltaX) deltaY = (newPos.y() - self.mMousePressPosition.y()) / 2 newPos.setY(newPos.y() - deltaY)

Small edit, function above works for "simple" items, but as soon as I get to child items with parent it appear to break... sigh. Needs some more math there

Thanks, that was exactly what I was looking for. Works like a charm now!

I have changed the structure, I have used a QQuickWidget with a QML inside, and now I have what I wanted. Here is my code in case anyone needs something similar

main.cpp

... MovableWidget *view = new MovableWidget; view->setSource(QUrl("qrc:/Test.qml")); view->setWindowFlags(Qt::FramelessWindowHint); view->show(); ...

Test.qml

import QtQuick 2.0 Rectangle { id: myWindow width: 500; height: 500 color: "yellow" Rectangle { anchors.centerIn: parent width: 200; height: 200 color: "red" } }

MovableWidget.cpp

#include "movableWidget.h" #include <QMouseEvent> // ************************************************** ************************** MovableWidget::MovableWidget(QWidget *parent) : QQuickWidget(parent), m_previousPos(0,0) { installEventFilter(this); } // ************************************************** ************************** bool MovableWidget::eventFilter(QObject *obj, QEvent *event) { if (event->type() == QEvent::MouseButtonPress) { m_previousPos = QCursor:os(); } else if (event->type() == QEvent::MouseMove) { QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event); if(mouseEvent->buttons() == Qt::LeftButton) { QPoint offset = m_previousPos - QCursor:os(); m_previousPos = QCursor:os(); move(pos() - offset); } } return false; }

@mrjj hi my friend. You helped me a lot. That works fine!!!!!!!
Superb!!!!!!!
Thanks again

Hi,
Do you see CONFIG+=qml_debug in your pro file ? which means you have enabled QML debugging (actually it's on by default) . if you remove it then it is disabled.
And just try in release mode.

Thank you all for this usefull post. I have a qml game, I'm using a Timer that is triggered with a bool variable that is binded to keys pressed and release, at a fixed speed of 1000/60.
The animation looks smooth in some cases in but in other cases it does not. So the correct aproach should be not to use a Timer, but trigger the animations with vsync, right? Is it possible to do this in qml? Also it seems qml does not 'respect' the timer interval, sometimes I get higher frame rates, maybe I have something else mess up. Besides Timers, I am using NumberAnimations, I think that will mess the Timer interval ? I have done some testings using Timers, and qml render.stats, in my laptop with a Nvidia GTX1050 TI, I get:

windows with native screen, animations are ok, smooth, renderstats shows aprox. 60fps windows with gaming monitor of 165Hz, animations are not smooth, renderstats shows aprox. 77fps linux mint, native screen, animations are ok, smooth, renderstats shows aprox. 60fps linux mint, gaming monitor of 165Hz, animations are ok, smooth, renderstats shows aprox. 120fps macbook air, native screen, animations are ok, smooth, renderstats shows aprox. 60fps macbook air, gaming monitor, animations not smooth, renderstats shows aprox. 45fps, maybe because of the hdmi cable with a display port adapter, that mess the performance iPhone 7, animations are ok, smooth, renderstats shows aprox. 60fps android phone, animations are ok, smooth, renderstats shows aprox. 60fps
Is there any cross plataform way of checking the vsinc and triger it to render the game loop ?
By the way, I have builds of my game for Windows, Mac, Linux (only binary) here https://drive.google.com/drive/folders/1JWrkcLyNfIZSmleJOJRkunM8mZUiIxDG?usp=sharing
also the code, if anybody wants to check it https://bitbucket.org/joaodeusmorgado/davidgalacticadventures/src/master/
Thanks
printescreen.png

@MrKozmon

I'm having the exact same problem on Android. When I drag a QQuickWidget that is hosting a QML-based WebView on Android, the widget moves but the WebView is left in the original position. Wondering if there has been any progress or a workaround for this issue.

I am using Qt 5.10.0, developing for an x86 Android platform.