How to iterate a QList of structs and modify struct elements directly?

[bobbayribs]

Hi, I'm trying to iterate through a QList of structs and modify elements within the struct, but can't figure it out.

My header looks like this:

struct buttonsStruct 
 {
     QPushButton *pb;
     QString s;
     QWidget *w;
 };
 
 QPushButton *m_fireButton;
 QPushButton *m_iceButton;

struct buttonsStruct 
 {
     QPushButton *pb;
     QString s;
     QWidget *w;
 };

 QPushButton *m_fireButton;
 QPushButton *m_iceButton;

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In my cpp file, create two struct objects and add them to a QList.

buttonsStruct b1 = {m_fireButton, "Fire", m_tabFire};
buttonsStruct b2 = {m_iceButton,  "Ice",  m_tabIce};
 
QList<buttonsStruct*> buttonsQList;
buttonsQList.append(&b1);
buttonsQList.append(&b2);

buttonsStruct b1 = {m_fireButton, "Fire", m_tabFire};
buttonsStruct b2 = {m_iceButton,  "Ice",  m_tabIce};

QList<buttonsStruct*> buttonsQList;
buttonsQList.append(&b1);
buttonsQList.append(&b2);

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I iterate through out each QList struct, creating a new QPushButton.

QMutableListIterator<buttonsStruct*> it(buttonsQList);
while (it.hasNext())
{
     buttonsStruct *bs = it.next();
 
     bs->pb = new QPushButton(m_centralWidget);
     (bs->pb)->setGeometry(QRect(xpos, ypos, 85, 25));
     (bs->pb)->setText(bs->s);
      ...
}

QMutableListIterator<buttonsStruct*> it(buttonsQList);
while (it.hasNext())
{
     buttonsStruct *bs = it.next();

     bs->pb = new QPushButton(m_centralWidget);
     (bs->pb)->setGeometry(QRect(xpos, ypos, 85, 25));
     (bs->pb)->setText(bs->s);
      ...
}

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When I try to access m_fireButton, I get a crash, and checking the memory address, I get 0x0.

Isn't bs->pb the same address as m_fireButton or m_iceButton? I'm modifying my struct elements directly in the iterator, no?

I looked through the documentation and found QMutableListIterator::QMutableListIterator(QList<T > & list)

so the QList is passed by reference. I can't see where I went wrong here. Any help?