qt - How update a QQuickItem created only at C++ level -

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i have qquickitem derived class below

class myqquickitem : public qquickitem  {   q_object public:   myqquickitem(qquickitem *parent = 0);   ~ myqquickitem();    qsgnode *updatepaintnode(qsgnode *, updatepaintnodedata *); };

i have own texturenode class well.

i have myqquickitem registered on qml side & embedded in main.qml below.

myqquickitem {     id: my_quick_item     objectname: "myqquickitemobject"     visible: false     width: 500     height: 500 }

on trigger of signal, have connected slot in myqquickitem, call this->update(). of course triggers updatepaintnode & able repaint myqquickitem new content want.

is possible trigger updatepaintnode on qquickitem without declaring @ in qml file?

i want dynamically create myqquickitem @ c++ level & not have defined or declared @ in main.qml how can this?

core question: how can create qquickitem purely @ c++ level updatable new content calling update on updatepaintnode fired?

update: able create qquickitem in following way.

qquickview * view = new qquickview; view->setsource(qurl(qstringliteral("qrc:/myqquickitem.qml"))); qquickitem * myquickitem_object = view->rootobject();

but problem cant updatepaintnode fire when call this->update. what should qquickitem update itself?





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