CODEWITHSUNDEEP
c++qtqtableview
Ghilas BELHADJ
Ghilas BELHADJ

Reputation: 14106

Update a QTableView

QTableView *tableView = new QTableView();
QStandardItemModel *model = new QStandardItemModel(15,4, this);
tableView->setModel(model);

model->setHorizontalHeaderItem(0, new QStandardItem("#") );
model->setHorizontalHeaderItem(1, new QStandardItem("col1") );
model->setHorizontalHeaderItem(2, new QStandardItem("col2") );

// update tableView

model->removeRows(0,model->rowCount());

QList<QStandardItem*> row1;
row1 << new QStandardItem("element 01") << new QStandardItem("element 02") << new QStandardItem("element 03");
model->appendRow( row1 );

QList<QStandardItem*> row2;
row2 << new QStandardItem("element 04") << new QStandardItem("element 05") << new QStandardItem("element 06");
model->appendRow( row2 );

The tableView will be frequently updated (all the content will be deleted and replaced).

what is the fastest way (less lines of code) to update this QTableView, maybe using some structure of data, and a QStandardItemModel method that handles directly this structure ?

something like:

model->setNewData( theNewData );

Upvotes: 3

Views: 3794

Answers (1)

Nejat
Nejat

Reputation: 32665

There is no need to remove rows and add new ones. You can just update the values for the current items like:

model->item(0, 0)->setData("element 01",Qt::DisplayRole);
model->item(0, 1)->setData("element 02",Qt::DisplayRole);
model->item(0, 2)->setData("element 03",Qt::DisplayRole);

model->item(1, 0)->setData("element 04",Qt::DisplayRole);
model->item(1, 1)->setData("element 05",Qt::DisplayRole);
model->item(1, 2)->setData("element 06",Qt::DisplayRole);

Upvotes: 1

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