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Details

Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 5.10.0 Beta 2
Affects Version/s: 5.10
Component/s: Quick: Core Declarative QML
Labels:
None

Commits:
2dd530ca35032465d4e928aa7c8f29563eb0c5da 526fb971ae9a2a6c8fce27883d9c62a9ea16bcdf (autotest) 309170a7f97759aa3f2e25a6c5202a6438a8bf4f

Description

The Test item receives release events in 5.9, but not in dev:

main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QDebug>
#include <QtQuick>

class Test : public QQuickItem
{
    Q_OBJECT

public:
    Test() {
        setFiltersChildMouseEvents(true);
        setAcceptedMouseButtons(Qt::LeftButton);
    }

    bool childMouseEventFilter(QQuickItem *item, QEvent *event) {
        qDebug() << Q_FUNC_INFO << item << event;
        return true;
    }
};

int main(int argc, char *argv[])
{
    QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    QGuiApplication app(argc, argv);

    qmlRegisterType<Test>("App", 1, 0, "Test");

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty())
        return -1;

    return app.exec();
}

#include "main.moc"

main.qml


import QtQuick 2.9
import QtQuick.Controls 2.2

import App 1.0

ApplicationWindow {
    id: window
    width: 640
    height: 480
    visible: true

    Test {
        anchors.fill: parent

        MouseArea {
            anchors.fill: parent
            anchors.rightMargin: parent.width / 2

            Rectangle {
                anchors.fill: parent
                color: "red"
            }
        }
    }
}

Starting /home/mitch/dev/temp/quick-qt5_9_debug-Debug/quick...
QML debugging is enabled. Only use this in a safe environment.
virtual bool Test::childMouseEventFilter(QQuickItem*, QEvent*) QQuickMouseArea(0x74b900, parent=0x74b6c0, geometry=0,0 320x480) QMouseEvent(MouseButtonPress, LeftButton, localPos=174,235.5, screenPos=231,281)
virtual bool Test::childMouseEventFilter(QQuickItem*, QEvent*) QQuickMouseArea(0x74b900, parent=0x74b6c0, geometry=0,0 320x480) QMouseEvent(MouseButtonRelease, LeftButton, localPos=174,235.5, screenPos=231,281)
virtual bool Test::childMouseEventFilter(QQuickItem*, QEvent*) QQuickMouseArea(0x74b900, parent=0x74b6c0, geometry=0,0 320x480) QEvent(UngrabMouse, 0x7ffd4f7a78c0)
/home/mitch/dev/temp/quick-qt5_9_debug-Debug/quick exited with code 0

Starting /home/mitch/dev/temp/quick-qt5_dev_debug-Debug/quick...
QML debugging is enabled. Only use this in a safe environment.
Empty filename passed to function
virtual bool Test::childMouseEventFilter(QQuickItem*, QEvent*) QQuickMouseArea(0xe550b0, parent=0xe54e50, geometry=0,0 320x480) QMouseEvent(MouseButtonPress, LeftButton, localPos=205.5,276.5, screenPos=262.5,322)
/home/mitch/dev/temp/quick-qt5_dev_debug-Debug/quick exited with code 0