Question

During runtime I have inserted QCombobox in my QTreeWidget like this:

    //global defines
    #define COLUMN_1 (0)
    #define COLUMN_2 (1)

    //Init QComboBox to QTreeWidget - works fine.
    QTreeWidgetItem *item = new QTreeWidgetItem(_myTreeWidget);
    item->setText(COLUMN_1,"testing");

    QComboBox *box = new QComboBox();

    box->addItem("select1");
    box->addItem("select2");
    box->addItem("select3");

    _myTreeWidget->setItemWidget(item, 1, box);

The above code works, but I also want to read the data text in these columns. Eg. get the strings “testing” & “select2” from code above. The problem is that I can’t figure out how to read the “QComboBox::currentText()” in the comboboxes.
I have tried:

   QTreeWidgetItemIterator it(_myTreeWidget);
   while(*it)
   {
      QTreeWidgetItem *item = *it;

      QVariant first   = item->text(COLUMN_1);
      QString firstStr = loggerName.toString();  //this works

      QComboBox *box    = (QComboBox*)item->data(COLUMN_2, 0);   
      QString boxValStr = box->text().toString();   //this doesn't works, always empty string

      //... more code to handle strings... 

      it++;
   }

Feels like the “item->data(COLUMN_2, 0)” is wrong way to go cause it returns a QVariant.
Solution on this problem?

Answer 1

Solved it thanks to the help from @Umnyobe and @Zaiborg above. Here is a total working example:

Init QTreeWidget with text in column1 and QComboBox in column2:

//global defines
#define COLUMN_1 (0)
#define COLUMN_2 (1)

QTreeWidgetItem *item = new QTreeWidgetItem(_myTreeWidgetPtr);//item to put in tree
item->setText(COLUMN_1,"animal");                             //item for column 1 in the tree.

QComboBox *box = new QComboBox();
box->addItem("mouse");                                        //adds selections for comboboxes
box->addItem("cat");
box->addItem("dog");

_myTreeWidgetPtr->setItemWidget(item, COLUMN_2, box);           //insert items in tree.

Read values from tree:

QTreeWidgetItemIterator it(_myTreeWidgetPtr);
while(*it)
{
    QTreeWidgetItem *item = *it;

    //Init pointer to current combobox
    QComboBox* box = qobject_cast<QComboBox*>(_myTreeWidgetPtr->itemWidget(item, COLUMN_2)); 

    //Get data from QTreeWidget
    QString col1Str = item->text(COLUMN_LOGGER);   
    QString col2Str = box->currentText();

    it++;
}

hope it can help someone 🙂