QSignalMapper

[Cremers]

Hello,
I'm trying to make a menu with items that are checkable and send them to one slot:
This seemed to work but crashes the dialog when it's closed.

Diagram::Diagram(QWidget *parent) :
    QDialog(parent)
{
menuBar = new QMenuBar(this);
planetsMenu = menuBar->addMenu("Planets");
QSignalMapper *mapper = new QSignalMapper(this);
for (int i = 0; i < 16; i++)
  {
  planet1Act[i] = new QAction(planetname[i], this);
  planet1Act[i]->setCheckable(true);
  mapper->setMapping(planet1Act[i], i);
  connect(planet1Act[i], SIGNAL(toggled(bool)), mapper, SLOT(map()));
  planetsMenu->addAction(planet1Act[i]);
  }
connect(mapper, SIGNAL(mapped(int)), this, SLOT(toggleplanet(int)));
}
//---------------------------------------------
void Diagram::toggleplanet(int n)
{
QDebug()<< planet1Act[n]->isChecked()<<n;
}
//---------------------------------------------

Diagram::Diagram(QWidget *parent) :
    QDialog(parent)
{
menuBar = new QMenuBar(this);
planetsMenu = menuBar->addMenu("Planets");
QSignalMapper *mapper = new QSignalMapper(this);
for (int i = 0; i < 16; i++)
  {
  planet1Act[i] = new QAction(planetname[i], this);
  planet1Act[i]->setCheckable(true);
  mapper->setMapping(planet1Act[i], i);
  connect(planet1Act[i], SIGNAL(toggled(bool)), mapper, SLOT(map()));
  planetsMenu->addAction(planet1Act[i]);
  }
connect(mapper, SIGNAL(mapped(int)), this, SLOT(toggleplanet(int)));
}
//---------------------------------------------
void Diagram::toggleplanet(int n)
{
QDebug()<< planet1Act[n]->isChecked()<<n;
}
//---------------------------------------------

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This works but crashes afterwards, what am I doing wrong?

If I don't use an array for the actions:

for (int i = 0; i < 16; i++)
  {
  planet1Act = new QAction(planetname[i], this);
  planet1Act->setCheckable(true);
  mapper->setMapping(planet1Act, i);
  connect(planet1Act, SIGNAL(toggled(bool)), mapper, SLOT(map()));
  planetsMenu->addAction(planet1Act);
  }
connect(mapper, SIGNAL(mapped(int)), this, SLOT(toggleplanet(int)));
}
//---------------------------------------------
void Diagram::toggleplanet(int n)
{
// how to get to the checked state of qaction number n ??
}

for (int i = 0; i < 16; i++)
  {
  planet1Act = new QAction(planetname[i], this);
  planet1Act->setCheckable(true);
  mapper->setMapping(planet1Act, i);
  connect(planet1Act, SIGNAL(toggled(bool)), mapper, SLOT(map()));
  planetsMenu->addAction(planet1Act);
  }
connect(mapper, SIGNAL(mapped(int)), this, SLOT(toggleplanet(int)));
}
//---------------------------------------------
void Diagram::toggleplanet(int n)
{
// how to get to the checked state of qaction number n ??
}

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This works fine but then I don't know how I can see if the action is checked or not in toggleplanet() since the slot can only have one int or object etc. I don't know how to get to the corresponding action from that one int.

If it were checkboxes or something, I could get to them in toggelplanet() but how do I get to the actions?

Thanks for helping.