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有什么方法可以从表格视图中的选定行中获取数据?我使用 QModelIndexList ids = ui->tableView->selectionModel()->selectedRows();它返回所选行的索引列表。我不需要索引。我需要来自所选行的每个单元格的数据。

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3 回答 3

9

你可以试试这个

int rowidx = ui->tblView->selectionModel()->currentIndex().row();
ui->txt1->setText(model->index(rowidx , 0).data().toString());
ui->txt2->setText(model->index(rowidx , 1).data().toString());
ui->txt3->setText(model->index(rowidx , 2).data().toString());
ui->txt4->setText(model->index(rowidx , 3).data().toString());
于 2014-01-21T22:02:03.603 回答
2
QVariant data(const QModelIndex& index, int role) const

用于返回数据。如果您需要根据QModelIndex行和列在此处获取数据并从某个容器中检索它,也许

std::vector<std::vector<MyData> > data;

您必须定义这样的映射并在函数中使用它data()setData()处理与底层模型数据的交互。

或者QAbstractItemModelQTreeView提供将您的类分配TreeItem给 each的方法QModelIndex,因此您接下来可以使用static_castQModelIndex.internalPointer()函数返回的指针检索指向每个数据的指针:

TreeItem *item = static_cast<TreeItem*>(index.internalPointer());

那么你可以创建一些映射:

// sets the role data for the item at <index> to <value> and updates 
// affected TreeItems and ModuleInfo. returns true if successful
// otherwise returns false
bool ModuleEnablerDialogTreeModel::setData(const QModelIndex & index,
    const QVariant & value, int role) {
  if (role
      == Qt::CheckStateRole&& index.column()==ModuleEnablerDialog_CheckBoxColumn) {
    TreeItem *item = static_cast<TreeItem*>(index.internalPointer());
    Qt::CheckState checkedState;
    if (value == Qt::Checked) {
      checkedState = Qt::Checked;
    } else if (value == Qt::Unchecked) {
      checkedState = Qt::Unchecked;
    } else {
      checkedState = Qt::PartiallyChecked;
    }
    //set this item currentlyEnabled and check state
    if (item->hierarchy() == 1) { // the last level in the tree hierarchy
      item->mModuleInfo.currentlyEnabled = (
          checkedState == Qt::Checked ? true : false);
      item->setData(ModuleEnablerDialog_CheckBoxColumn, checkedState);
      if (mRoot_Systems != NULL) {
        updateModelItems(item);
      }
    } else { // every level other than last level
      if (checkedState == Qt::Checked || checkedState == Qt::Unchecked) {
        item->setData(index.column(), checkedState);
        // update children
        item->updateChildren(checkedState);
        // and parents
        updateParents(item);

实施示例

于 2013-09-28T21:50:59.977 回答
2
Try this for getting data. selectedRows(0) indicates first column of selected rows, selectedRows(1) indicates second column of selected rows row likewise

QItemSelectionModel *select = ui->existingtable->selectionModel();
qDebug()<<select->selectedRows(0).value(0).data().toString();
qDebug()<<select->selectedRows(1).value(0).data().toString();
qDebug()<<select->selectedRows(2).value(0).data().toString();
qDebug()<<select->selectedRows(3).value(0).data().toString();
于 2016-09-23T10:16:04.467 回答