有没有办法从表格视图中选择的行中获取数据?我已经使用了QModelIndexList ids = ui->tableView->selectionModel()->selectedRows();
,它返回所选行的索引列表。我不需要索引,我需要所选行中每个单元格的数据。
你可以试一下这个
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());
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();
QVariant data(const QModelIndex& index, int role) const
这里使用 QModelIndex
的行和列来获取数据,并从某个容器中检索数据。
std::vector<std::vector<MyData> > data;
data()
和setData()
函数中使用它来处理与底层模型数据的交互。QAbstractItemModel
和QTreeView
提供的方法将您的类(例如TreeItem
)分配给每个QModelIndex
,因此您可以使用static_cast
从QModelIndex.internalPointer()
函数返回的指针检索每个数据的指针。TreeItem *item = static_cast<TreeItem*>(index.internalPointer());
// 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);
该链接提供了一个关于Qt技术的实现示例。
QModelIndex::data(int role)
有意义吗? - vahancho