Question

i have a class implemented from QGraphicsItem, called Node.

i have a rectangle shaped “Node” and i can do something when user clicked on it

i use mousePress and mouseRelease events.

but i want to be notified when user clicked “out of” the rectangle shape.

i tried to implement these functions:

Qt Code:

void Node::focusInEvent ( QFocusEvent * event){
cout<<"in"<<endl;
update();

QGraphicsItem::focusInEvent(event);
}
void Node::focusOutEvent ( QFocusEvent * event ){
cout<<"out"<<endl;
update();
QGraphicsItem::focusOutEvent(event);

}
void Node::hoverEnterEvent(QGraphicsSceneHoverEvent *event){
cout<<"out"<<endl;
}

these do not reacts if i click in or out of rectangle.
should i set a logic on my own for example getting the mouse position and control if it is out of rectangle?
or is there a built in method?

or how can a “Node” object know if other Node object is clicked?

also i wonder, googled but could not found that when does focusinevent and focusoutevent triggered? I guess focusOutEvent must work when i had clicked in the item, then out of the item, am i wrong?

thanks for idea.

Answer 1

Have you called setFlags method of your graphics item with QGraphicsItem::ItemIsSelectable or QGraphicsItem::ItemIsMovable ?

According to QT doc.

By default, no flags are enabled.