Qt4-preview-feedback Archive, May 2007
Hwo to traverse a QTreeView?
Message 1 in thread
I just read in the book "C++ GUI programming with qt4", but even there is no
example, how to simply get data from a QTreeView.
I have a selection list, where a few data sets are displayed with a checkbox,
to select, wether the item is in a list or not:
[X] | 1 | First item
[X] | 2 | 2nd item
...
Unfortunately, a listview can only one column, so I have to use a QTreeView.
But a QTreeView has no Iterator to go from the first to the last item or
sibling, nor has it a rowCount function.
Ok, lets take the underlaying model:
QStandardItemModel* model = static_cast<QStandardItemModel*
*>(treeView->model());
for(int i=0; i<model->rowCount(); i++)
{
QStandardItem* item = model->item(i);
}
this code crashes....
and to get the text of the first column, I have to call
item->data(item->index(row, 0),Qt::DisplayRole).toString()
every time?
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Message 2 in thread
> QStandardItemModel* model = static_cast<QStandardItemModel*
> *>(treeView->model());
> for(int i=0; i<model->rowCount(); i++)
> {
> QStandardItem* item = model->item(i);
> }
> this code crashes....
>
Sorry, because I had a Proxymodel inbetween...
but is it really that complex to read data from a simplified tree?
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