Error creating a animated menu

Hi,

I'm trying create a animated menu, i'ts a simple animation, just show and hide the menu.

But I get a error and can't figure that out

Code:

---

Menu *menu = new Menu();
 
    menu->setPos(0, scene->sceneRect().center().y() - (menu->boundingRect().center().y()*scaleT));
 
    scene->addItem(menu);
 
    setScene(scene);
 
    j->setPos(350,0);
    i->setPos(400,0);
 
    QPushButton *button = new QPushButton;
 
    //animaçao menu
    QStateMachine machine;
    QState *state_hide = new QState(&machine);
    QState *state_show = new QState(&machine);
    machine.setInitialState(state_show);
 
    state_show->assignProperty(menu, "pos", QPointF(110,200));
 
    state_hide->assignProperty(menu, "pos", QPointF(800,200));
 
    QAbstractTransition *t1 = state_show->addTransition(button, SIGNAL(clicked()),state_hide);
    QSequentialAnimationGroup *animation1SubGroup = new QSequentialAnimationGroup;
    animation1SubGroup->addPause(250);
 
    t1->addAnimation(animation1SubGroup);
    t1->addAnimation(new QPropertyAnimation(menu, "pos"));
 
    QAbstractTransition *t2 = state_hide->addTransition(button, SIGNAL(clicked()), state_show);
    t2->addAnimation(new QPropertyAnimation(menu, "pos"));
 
    machine.start();

---

Code:

---

class Menu: public QGraphicsRectItem
{
public:
    Menu();
 
protected:
    void paint( QPainter *, const QStyleOptionGraphicsItem *option, QWidget *widget );
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
 
private:
    QImage *menu_image;
};

---

Code:

---

Menu::Menu()
{
    visible = false;
 
    menu_image = new QImage("C:/menu.png");
    setRect(0, 0, menu_image->width(), menu_image->height());
    setFlag(ItemIsMovable);
    float itemScale = (float) QApplication::desktop()->width() / (float)1920;
    this->setScale(itemScale);
 
    Botao *button1 = new Botao(QImage("C:/botao.png"), QImage("C:/botao2.png"), "Iluminação Terreo");
    button1->setParentItem(this);
 
    button1->setPos(0,226);
}

---

Errors:

Quote:

---

mainview.cpp:67: error: no matching function for call to 'QState::assignProperty(Menu*&, const char [4], QPointF)'
../src/corelib/statemachine/qstate.h:94: note: candidates are: void QState::assignProperty(QObject*, const char*, const QVariant&)
mainview.cpp:69: error: no matching function for call to 'QState::assignProperty(Menu*&, const char [4], QPointF)'
../src/corelib/statemachine/qstate.h:94: note: candidates are: void QState::assignProperty(QObject*, const char*, const QVariant&)
mainview.cpp:76: error: no matching function for call to 'QPropertyAnimation::QPropertyAnimation(Menu*&, const char [4])'
../src/corelib/animation/qpropertyanimation.h:79: note: candidates are: QPropertyAnimation::QPropertyAnimation(const QPropertyAnimation&)
../src/corelib/animation/qpropertyanimation.h:64: note: QPropertyAnimation::QPropertyAnimation(QObject*, const QByteArray&, QObject*)
../src/corelib/animation/qpropertyanimation.h:63: note: QPropertyAnimation::QPropertyAnimation(QObject*)
mainview.cpp:79: error: no matching function for call to 'QPropertyAnimation::QPropertyAnimation(Menu*&, const char [4])'
../src/corelib/animation/qpropertyanimation.h:79: note: candidates are: QPropertyAnimation::QPropertyAnimation(const QPropertyAnimation&)
../src/corelib/animation/qpropertyanimation.h:64: note: QPropertyAnimation::QPropertyAnimation(QObject*, const QByteArray&, QObject*)
../src/corelib/animation/qpropertyanimation.h:63: note: QPropertyAnimation::QPropertyAnimation(QObject*)

---

QGraphicsRectItem does not inherit QObject.

Thanks for answer.

I just add the QObject in the class:

class Menu: public QObject, public QGraphicsRectItem


Now compile with no errors, but doesn't work.
The menu stay in the same position.

Why would anything change position? Did you read the animation framework docs before trying to use it?