Using Q_Property to display properties

Question

I have a GUI displaying a tree architecture as shown here.

Each of those nodes are separate classes that are derived from the node above them. All of them inherit QObject for their implementation. Now I need to add a few properties to be displayed when the user selects Properties under the Right-Click menu of Implicit. Selecting this opens a window with the properties. I added these properties in the header file of Implicit like so :

#ifndef FCIMPLICIT_H
#define FCIMPLICIT_H
#include <QObject>
#include "Interface.h"
#include "ResourceItem.h"
#include "MonWindow.h"
#include "FCTab.h"
#include "ResourceItem.h"
#include "FCAbstract.h"
#include "FCInterface.h"
#include "FCConnections.h"
class CFCImplicit: public CResourceItem
{

    Q_OBJECT
    Q_PROPERTY(int FCPortID READ getPortID )
    Q_PROPERTY(QString Type READ getType )
    Q_PROPERTY(QString Status READ getStat )    
    Q_PROPERTY(int WWNodeNumber READ getNodeNo )
    Q_PROPERTY(int WWPortNumber READ getPortNo )
    Q_PROPERTY(bool AutoActive READ getAuto )
public:
    CFCImplicit(QObject*);
    ~CFCImplicit();

    QString                 getType();
    QString                 getStat();
    int                     getPortID();
    int                     getPortNo();
    int                     getNodeNo();
    bool                    getAuto();


};

FCinterface.h is the header of the FCASM node.

The issue is that only the first property is displayed, as seen in the second picture. Is there a reason why this is happening? Am I supposed to add something to the constructor or a new function?

The constructor for the Implicit class is

CFCImplicit::CFCImplicit(QObject* parent) : CResourceItem(parent)
{

    fnSetProperty("objectName", QString("Implicit"));   
    ((CResourceItem*)parent)->fnAddResources(this);

}

EDIT:

This is the code for all the READ functions

QString CFCImplicit::getType()
{
QString a;
a="Implicit";
return a;
}

QString CFCImplicit::getStat()
{QString a;
a="Idle";
return a;}

int CFCImplicit::getPortID()
{int a;
a=1;
return a;}

int CFCImplicit::getPortNo()
{int a;
a=2;
return a;}

int CFCImplicit::getNodeNo()
{int a;
a=2;
return a;}

bool CFCImplicit::getAuto()
{bool a;
a=true;
return a;}

Answer 1

I found out what I was doing wrong. I assumed that since the properties were read only, I only needed a READ accessor function. By adding the WRITE accessor and adding the required WRITE functions, the properties were displayed. I don't exactly understand why this condition is required (maybe having just READ just makes the properties available for introspection), but it worked! So there you go.

Happy coding everyone!

Answer 2

No need to add the READ and the function, you can use the MEMBER to have direct access to the variable.