Hi,
I 'm not sure it' the solution to your problem but I do create object
instances from delegates in one of my classes and the objects are visible.
I don't have the code with me right now but the only difference I think there
is from your code to mine is that I set the parent property of my newly
created object so il is linked in the QML tree.
So try adding:
obj->setProperty("parent", QVariant::fromValue<QDeclarativeItem*>(this));
Of course you can change "this" by the pointer to the desired QDeclarativeItem
if needed.
Good luck!
PS: I have seen tha you used obj->setParent(QObject*) but I don't think this
has some effect on QML rendering.
Le dimanche 1 avril 2012 23:50:32, Gabriel M. Beddingfield a écrit :
> All:
>
> I'm trying to make a container, similar to GridView. I can set a delegate
> and create instances of them, but I can't seem to make them visible. What
> am I doing wrong?
>
> To illustrate my problem, I've set up a minimal example (attached) with a
> custom Component called "FourSquare." It's supposed to lay out four of the
> delegates in a 2x2 grid. The expected results of the program is to see 4
> red squares. However, I don't see them... all I see is the background.
>
> void FourSquare::update_layout()
> {
> int rows, cols, r, c;
> int x, y, m;
> QObject *obj;
>
> if (!m_delegate)
> return;
>
> rows = 2;
> cols = 2;
> m = 2; /* margin */
> y = 0;
> for (r = 0 ; r < rows ; ++r) {
> x = 0;
> for (c = 0 ; c < cols ; ++c) {
> if (!m_children[r][c]) {
> obj = m_delegate->create();
> obj->setParent(this);
> }
> obj->setProperty("x", x);
> obj->setProperty("y", y);
> obj->setProperty("width", m_cellWidth);
> obj->setProperty("height", m_cellHeight);
> x += m_cellWidth + m;
> }
> y += m_cellHeight + m;
> }
> }
>
> Thanks in advance!
>
> -gabriel
>
> p.s. I'm using Qt 4.7.4 on Ubuntu 11.10 (x86).
--
Unai IRIGOYEN
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