[SOLVED]QML Slots & Cpp Signal

[Wroman]

Hello !

There's plenty of tutorials that explain how to make QML Signals available to cpp.

But how do you connect QML slot to cpp Signal ?

I've made this :

main.cpp :
@int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);

QQuickView view(QUrl::fromLocalFile("qml/my_hmi/main.qml"));
QQuickItem *item = view.rootObject();

HMIManager* manager = new HMIManager();
ImageManager* im = manager->getImageManager(); //Image manager inhertis from Q_Object

QObject::connect(*im,
                 SIGNAL(imageChanged(QVariant)),
                 *item,
                 SLOT(changeMainImage(QVariant)));

view.show();
return app.exec();

}
@

main.qml :
@
[...]
function changeMainImage(src)
{
mainImg.source = src;
console.log("Hello Wolrd !")
}//slot
[...]
@

ImageManager :
@
#include <QtCore/QString>
#include <QtCore/QMap>
#include <QtCore/QVector>
#include <QtGui/QImage>
using namespace std;

#ifndef ImageManager_h
#define ImageManager_h

class HMIManager;

class ImageManager : public QObject
{

Q_OBJECT

public:

explicit ImageManager();
~ImageManager();

enum E_ImageType
{
VIS_IMG = 0,
SUPIMP_IMG = 1,
DEC_G_IMG = 2,
RAW_G_IMG = 3,
RAW_G_MTX = 4
};

enum E_Direction
{
Left = 0,
Right = 1,
Up = 2,
Down = 3
};

signals:

void imageChanged(QVariant src);

[...]
}
@

But it asks me :

C:\Dvl[...]\src\main.cpp:34: erreur : no matching function for call to 'QObject::connect(ImageManager&, const char*, QQuickItem&, const char*)'

Any clues ?

[utcenter]

QObject::connect uses pointers for the connection syntax. Why do you dereference your pointers?

[Wroman]

Oops sure. ^^'

Now, it's just :

@C:\Dvl[...]\src\main.cpp:34: erreur : no matching function for call to 'QObject::connect(ImageManager*&, const char*, QQuickItem*&, const char*)'@

Was just a stupid problem of import...