I need help understanding QGraphicsView

[wagmare]

use peg.setPos(x, y) to set that item in a particular location on scene ...

increase the ellipse size a little ... its very tiny on a big scene ...hahaha ..

[wagmare]

your code is completed ... see your item in the attachment ...

actually u need to inherit QObject with your custom QGraphicsItem ...
that is the problem ... now it solved ... also use setPos() in QGraphicsScene()..

class Peg : public QObject, public QGraphicsRectItem
{
 
    Q_OBJECT    //if u need any connect in future

class Peg : public QObject, public QGraphicsRectItem
{

    Q_OBJECT    //if u need any connect in future

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have a good day

[aarelovich]

Hi:

So thanks for the help. But even though I did what you told me it still did not appear. But I figured out the problem and it did not have anything to do with QGraphicsView Framework and everything to do with C++.

I chaged this code

Peg peg(Qt::red);
    scene->addItem(&peg);

Peg peg(Qt::red);
    scene->addItem(&peg);

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with this code

Peg *peg = new Peg(Qt::red);
    scene->addItem(peg);

Peg *peg = new Peg(Qt::red);
    scene->addItem(peg);

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It seems that by creating the local variable peg instead of a pointer it gets destroy at the end of the constructor therefore, it never shows up in the screen.

Thanks for all the help, I'll probably be posting more of my problems.