QStandardItem and int
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Hi,
Does anyone know if QStandardItem can be used to display int values?I can display it if it's QString
@
QStandardItemModel *model = new QStandardItemModel(0,4,this); //Rows and 4 Columns
ui->tableView->setModel(model);
QStandardItem *firstRow = new QStandardItem(QString("1234"));
model->setItem(0,0,firstRow);
@But if I try this, it doesn't work.
@
QString mystring = "1234";
int myint = mystring.toInt();
qDebug() << "int is" << myint ;QStandardItemModel *model = new QStandardItemModel(0,4,this); //Rows and 4 Columns
ui->tableView->setModel(model);
QStandardItem *firstRow = new QStandardItem(myint);
model->setItem(0,0,firstRow);
@ -
QStandardItem constructor takes displayed text, not the actual model data, so you have (at least) 2 options:
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The "lazy" approach.
Construct the item like this:
@new QStandardItem(QString::number(myInt));@
The disadvantage is that you need to keep that displayed text with actual data in sync manually. It's ok if it's for one-time displaying. -
The "more proper" way:
Subclass the QStandardItem. Set the int as the custom data with setData(myInt);
Override the data() member and return stringified int for the display role:
@
QVariant MyStandardItem::data(int role) const {
if(role == Qt::DisplayRole)
return data().toString();
else
return QStandardItem::data(role);
}
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Btw. since you put the items right away you might as well create the row for it right in the constructor of the model:
@ new QStandardItemModel(1,4,this); // 1 row instead of 0@
This avoids resizing of the internal data structure when you add items. -
