Pointer to a Q_GADGET

raphasauer

Hello everyone. I'm trying to develop a function that receives a Q_GADGET as input and lists its properties. I can't figure out, however, how to actually input a Q_GADGET in the function. I was hoping to work with pointers (something like a pointer to a Q_GADGET), but all my attempts so far have failed. The first snippet is from a Q_GAGDET. The second snippet contains the main.

#ifndef EXAMPLE_H
#define EXAMPLE_H
#include <QObject>

struct Player {
    Q_GADGET

public:
    enum class CarType {
        NO_CAR = 0,
        SLOW_CAR,
        FAST_CAR,
        HYPER_CAR
    }; Q_ENUM(CarType)

    Q_PROPERTY(Player player READ getPlayer)
    Q_PROPERTY(float m_speed READ getSpeed)
    Q_PROPERTY(CarType m_carType READ getCarType)

    Player getPlayer() { return *this;}
    float getSpeed() {return m_speed;}
    CarType getCarType() { return m_carType;}

#endif

Main:

#include <QCoreApplication>
#include <iostream>
#include <QMetaObject>
#include "example.h"
#include <QDebug>
#include <QMetaProperty>

//Should list properties of a Q_GAGDET
//As example only, I know Q_GAGDET is
// a macro in this wont run
void gadgetExplorer(Q_GAGDET *ptr)
{
    const QMetaObject = ptr->staticMetaObject;
    //List properties
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    qRegisterMetaType<Player>();
    Player p1;
    p1.m_speed = 30;
    Player *pointerPlayer = &p1;
    //Doing something like this to list properties from Player
    //Using a pointer as an input
    gadgetExplorer(pointerPlayer);
    return a.exec();
}

I know this could be achieved using a MetaObject as an input, however I'm really curious to know if it's possible using pointers.

Thanks for your time!

VRonin

Q_GAGDET is not a class, use a template:

template <class T>
void gadgetExplorer(T *ptr)
{
    const QMetaObject = ptr->staticMetaObject;
    //List properties
}

raphasauer

@VRonin Solved! Thanks for your time!