CODEWITHSUNDEEP
c++qt
Pedrink
Pedrink

Reputation: 15

Converting a QList to a QStringList to insert into a QComboBox

I need to insert items into a ComboBox, but to do so, i need to have a QStringList instead of a QList.

In my .h i have the QList of a Object.

QList<placavideo> listaPlacavideo;

In my .cpp i have the implementation:

placavideo placavideo1;
placavideo1.setNome("EVGA NVIDIA GeForce RTX 2080");
listaPlacavideo.insert(0,placavideo1);

I have tried this conversion based on another questions, that isn't working:

void intcomputer::on_box_placavideo_activated(const QString &arg1)
{
    QStringList  listaPlacavideos;
    foreach(placavideo *item, listaPlacavideo) 
        listaPlacavideos << item;

ui->box_fonte->addItems(listaPlacavideos);
}

The question is, how do I insert the items from listaPlacavideo into a QStringList, so I can insert the entire QStringList into the ComboBox?

Upvotes: 0

Views: 1656

Answers (3)

Joseph Sowers
Joseph Sowers

Reputation: 1

Assuming you have loaded QList listaPlacavideo; Then:

QStringList slist = QStringList(listaPlacavideo);

combobox.addItems(slist);  // assuming 'combobox' is the name of the QComboBox

Upvotes: 0

Jim Rhodes
Jim Rhodes

Reputation: 5095

If you have a function in placavideo to get the name, for example getNome(), then you just need to change one line of code.

void intcomputer::on_box_placavideo_activated(const QString &arg1)
{
  QStringList  listaPlacavideos;

  foreach(const placavideo& item, listaPlacavideo)
  {
    listaPlacavideos << item.getNome();  // Add the name to the list, not the whole object
  }

  ui->box_fonte->addItems(listaPlacavideos);
}

EDIT: I added const before placavideo&. That should fix your error.

EDIT2: You should declare the function getNome() as const.

QString getNome() const;

Upvotes: 1

ChrisMM
ChrisMM

Reputation: 10103

You cannot make the object into a name. It is expecting a QString for a display name. If you want to store the objects in the combo box as well, then do something like this:

foreach ( plavavideo &item, listaPlacavideo ) {
    ui->box_fonte->addItem( item.getName(), item );
}

This will require placavideo to be a meta type usable by QVariant though.

Upvotes: 3

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