QQuickItem can't catch MouseButtonRelease in C++

archqt

Hi,
i did a few program to show you the program. I try to catch PressEvent and ReleaseEvent but it doesn't work with simple Click. It only work on DoubleClick but all buttons except the Left One (sic)

Here is the QML test

import QtQuick 2.5
import QtQuick.Window 2.0
import QtQuick.Controls 1.4
import GestureArea 1.0


ApplicationWindow {
    visible: true
    
    GestureArea {
        anchors.fill: parent
        z: 1000
        opacity: 0.2
        focus: true
        onClicked: console.log('Click');
        onReleased: console.log('Released')
  /*      
        MouseArea {
            anchors.fill: parent
            propagateComposedEvents: true
            onPressed: console.log('GestureArea Click');
            onReleased:console.log('gestureArea Released');
        }
   */     
        
    }
}

Here is the GestureArea.h file

#ifndef GESTUREAREA_H
#define GESTUREAREA_H

#include <QtQuick>

class GestureArea : public QQuickItem
{
    Q_OBJECT
public:
    GestureArea();
    void PressEvent(QMouseEvent *event);
    void ReleaseEvent(QMouseEvent *event);
    bool event(QEvent *e);
signals:
    void clicked(QMouseEvent *event);
    void released(QMouseEvent *event);
};

#endif // GESTUREAREA_H

And the cpp file GestureArea.cpp

#include "gesturearea.h"
#include <QtQuick>
#include <QDebug>

GestureArea::GestureArea()
{
    qDebug()<<"GestureArea::GestureArea()";
    setAcceptHoverEvents(true);
    setAcceptedMouseButtons(Qt::AllButtons);
    setFlag(ItemAcceptsInputMethod, true);
    setFlag(QQuickItem::ItemHasContents);
}

bool GestureArea::event(QEvent *e)
{
    qDebug()<<(int)e->type();
    if (e->type()==QEvent::MouseButtonRelease) ReleaseEvent((QMouseEvent*)e);
    if (e->type()==QEvent::MouseButtonPress) PressEvent((QMouseEvent*)e);
    QQuickItem::event(e);
    return true;
}

void GestureArea::PressEvent(QMouseEvent *event)
{
    qDebug()<<"void GestureArea::PressEvent(QMouseEvent *event)";
    emit clicked(event);
}

void GestureArea::ReleaseEvent(QMouseEvent *event)
{
    qDebug()<<"void GestureArea::ReleaseEvent(QMouseEvent *event)";
    emit released(event);
}

I decided to overload event function to see the type of event i could catch.
On the QML file when i put a MouseArea it can catch Press/Relesease

But my goal is to catch these events on the C++ code.

Sincerely

jpnurmi

In order to receive a mouse release event, an item must accept the preceding press event.

archqt

@jpnurmi said:

In order to receive a mouse release event, an item must accept the preceding press event.

Ok thanks, but in this case there is a problem because what i want to do with this code is to be able to catch all events below this Item.
Why do i want this ? to make a Gesture Capture because i don't think this exist on Qt. I want to have the "force" of the movement....But it doesn't exist on QtQuick.
What i want is a Component in C++ that is above all others and can catch all events. A bit like a filterEvent but without knowing what is above my GestureArea

Sincerely